Datasheet UCS1003-1/UCS1003-2/UCS1003-3 Datasheet

UCS1003-1/2/3

USB Port Power Controller with Charger Emulation

Features:

• Port Power Switch with Two Current Limit Behaviors

- 2.9V to 5.5V Source Voltage Range

- Up to 3.0A Current (2.85A typical) with
55 m On Resistance

- Overcurrent Trip or Constant Current Limiting

- Soft Turn-On Circuitry

- Selectable Current Limit

- UCS1003-1 has programmable Current Limit
via the SMBus 2.0/I

- Dynamic Thermal Management

- Undervoltage and Overvoltage Lockout

- Back-Drive, Back-Voltage Protection

- Latch or Auto-Recovery (Low-Test Current)
Fault Handling

- Selectable Active-High or -Low Power Switch
Enable

- BC1.2 V
Function

• Selectable/Automatic Cycling of Universal Serial
Bus (USB) Data Line Charger Emulation Profiles

- USB-IF BC1.2 Charging Downstream Port

(CDP) and Dedicated Charging Port (DCP)
modes, Chinese Telecommunications Industry
Standard YD/T 1591-2009 and most Apple
Inc., Samsung and RIM

- UCS1003-1 supports other Charger Emula-

tion Profiles as defined via the SMBus

2.0/I

- Supports 12W Charging Emulation

- USB 2.0 Compliant High-Speed Data Switch

(in Data Pass-Through, SDP and CDP modes)

- Nine preloaded charger emulation profiles for

maximum compatibility coverage of the
peripheral devices

- UCS1003-1 has one Custom-Programmable

Charger Emulation profile for portable device
support for fully host-controlled charger
emulation

• Supports Active Cables

• UCS1003-1 supports Self-Contained Current
Monitoring and Rationing for power-allocation
applications

• UCS1003-1 and UCS1003-3 have Low-Power
Attach Detection and Open-Drain (A_DET#) pin

• UCS1003-2 has Charging Active (CHRG#)
Open-Drain Pin

• Ultra-Low Power Sleep State

• Optional Split Supply Support for V
Low Power in System Standby states

2C™

BUS

protocol

2C™

protocol

Discharge Port Renegotiation

®

protocols standard

and VDD for

S

®

• Wake on Attach USB (UCS1003-1 and UCS1003-3)

• UCS1003-1 supports SMBus 2.0/I2C Communications

- Supports Block Write and Read

- Multiple SMBus Addresses

• Wide Operating Temperature Range: -40°C to +85°C

• IEC61000-4-2 8/15 kV Electrostatic Discharge
(ESD) Immunity

Description:

The UCS1003-1/2/3 family of devices provides a USB
port power switch for precise control of up to 3.0A
continuous current (2.85A typical) with Overcurrent
Limit (OCL), dynamic thermal management, latch or
Auto-Recovery (low-test current) fault handling,
selectable active-high or -low enable, undervoltage and
overvoltage lockout, back-drive protection and back­voltage protection.

Split supply support for V
power in system standby states. This gives battery­operated applications (such as on-board computers)
the ability to detect attachments from a Sleep or Off
state. After the Attach Detection is flagged, the system
can decide to wake-up and/or provide charging.

In addition to Power Switching and Current Limiting
modes, the UCS1003-1/2/3 will automatically charge a
wide variety of portable devices, including USB-IF
BC1.2, YD/T-1591 (2009), most Apple Inc., Samsung
and RIM and many others. Nine preloaded charger
emulation profiles maximize the compatibility coverage
of the peripheral devices. Additionally, a customizable
charger emulation profile is available in UCS1003-1 to
accommodate unique existing and future portable
device handshaking/signature requirements.

The UCS1003-1 also provides current monitoring to
allow intelligent management of system power and
charge rationing for controlled delivery of current, regard­less of the host power state. This is especially important
for battery-operated applications that want to provide
power and do not want to drain the battery excessively.

The UCS1003-1/2/3 is available in a 4 mm x 4 mm
20-pin QFN package.

and VDD is an option for low

S

Applications:

• Notebook and Netbook Computers

• Tablets and E-book readers

• Desktops and Monitors

• Docking Stations and Printers

• AC-DC Wall Adapters

 2014 Microchip Technology Inc. DS200005346A-page 1

UCS1003-1/2/3

D

MOUT

2

V

BUS1

V

BUS2

M1

D

MIN

D

PIN

SEL

ALERT#

VS1V

S2

V

DD

SMCLK/S0

GND

EM_EN

A_DET#

D

POUT

M2

EP

20119 18 17

3

4

14

13

12

11

678 9

21

5

10

15

16

COMM_SEL/I

LIM

PWR_EN

SMDATA/LATCH

* Includes Exposed Thermal Pad (EP); see Table 3-1.

D

MOUT

2

V

BUS1

V

BUS2

M1

D

MIN

D

PIN

SEL

ALERT#

VS1V

S2

V

DD

S0

GND

EM_EN

CHRG#

D

POUT

M2

EP

20119 18 17

3

4

14

13

12

11

6789

21

5

10

15

16

I

LIM

PWR_EN

LATCH

UCS1003-1

4x4 QFN*

UCS1003-2

4x4 QFN*

D

MOUT

2

V

BUS1

V

BUS2

M1

D

MIN

D

PIN

SEL

ALERT#

VS1V

S2

V

DD

S0

GND

EM_EN

A_DET#

D

POUT

M2

EP

20119 18 17

3

4

14

13

12

11

6789

21

5

10

15

16

I

LIM

PWR_EN

LATCH

UCS1003-3

4x4 QFN*

Package Type

DS200005346A-page 2  2014 Microchip Technology Inc.

Block Diagram

Note 1: Available for UCS1003-1 only.

2: Available for UCS1003-2 only.
3: Available for UCS1003-3 only.

Charger Control,

Measurement,

OCL

Interface,

Logic

SMCLK (Note 1)/S0

SMDATA (Note 1)/LATCH

A_DET# (Note 1, Note 3)

ALERT#

Power
Switch

Temp

PWR_EN

D

POUT

D

MOUT

D

PIN

V

DD

V

S

V

BUS

D

MIN

GND

USB 2.0 HS Data Switch &

Charger Emulator

COMM_SEL (Note 1)

/I

LIM

Attach Detector

M1

M2

SEL

EM_EN

V

DD

V

DD

UVLO,

OVLO

CHRG# (Note 2)

UCS1003-1/2/3

 2014 Microchip Technology Inc. DS200005346A-page 3

UCS1003-1/2/3

NOTES:

DS200005346A-page 4  2014 Microchip Technology Inc.

1.0 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

UCS1003-1/2/3

Voltage on VDD, VS and V

Pull-Up Voltage (V

PULLUP

Data Switch Current (I

pins ....................................................................................................................-0.3 to 6V

BUS

) ...................................................................................................................-0.3 to VDD + 0.3V

HSW_ON

), Switch On...........................................................................................................±50 mA

Port Power Switch Current ..................................................................................................................... Internally limited

Data Switch Pin Voltage To Ground (D

POUT

PIN

Differential Voltage Across Open Data Switch (D

, D

POUT

MOUT

-D

, D

); (VDD powered or unpowered)....... -0.3 to VDD+0.3V

MIN

PIN

, D

MOUT

- D

MIN

, D

PIN

- D

POUT

, D

MIN

- D

MOUT

) .............V

DD

, D

Voltage on any Other Pin to Ground ................................................................................................... -0.3 to VDD + 0.3V

Current on any Other Pin......................................................................................................................................±10 mA

Package Power Dissipation ............................................................................................................................... Tab le 1 -1

Operating Ambient Temperature Range .....................................................................................................-40 to +125°C

Storage Temperature Range.......................................................................................................................-55 to +150°C

† Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at those or any other conditions above those indicated in the
operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.

TABLE 1-1: POWER DISSIPATION SUMMARY

Board Package 

High K
(see Note 1)

Low K
(see Note 1)

20-pin QFN

4x4 mm

20-pin QFN

4x4 mm

Note 1: Junction to ambient (

via design with a thermal landing soldered to the PCB ground plane with 0.3 mm (12 mil) diameter vias in
a 3x3 matrix (9 total) at 0.5 mm (20 mil) pitch. The board is multi-layer with 1-ounce internal power and
ground planes and 2-ounce copper traces on top and bottom. A Low K board is a two-layer board without
thermal via design with 2-ounce copper traces on the top and bottom.

De-Rating

JC



JA

Factor Above

+25°C

6°C/W 41°C/W 24.4 mW°/C 2193 mW 1095 mW 729 mW

6°C/W 60°C/W 16.67 mW°/C 1498 mW 748 mW 498 mW

) is dependent on the design of the thermal vias. A High K board uses a thermal

JA

TA<+25°C

Power
Rating

TA<+70°C

Power
Rating

TA<+85°C

Power
Rating

TABLE 1-2: ELECTRICAL CHARACTERISTICS

Electrica l Charact eristics: Unless otherwise specified, V

T

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Power Supply

Supply Voltage V

Source Voltage V

DD

S

4.5 5 5.5 V Note 1

2.9 5 5.5 V Note 1

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

 2014 Microchip Technology Inc. DS200005346A-page 5

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

and I

PULLUP

1.68A).

LIM

= 3V to 5.5V,

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Supply Current in Active
(I

DD_ACTIVE

+ I

VS_ACT

)

Supply Current in Sleep
(I

DD_SLEEP

+ I

VS_SLEEP

)

Supply Current in Detect
(I

DD_DETECT

+ I

VS_DETECT

)

I

— 650 750 µA Average current I

ACTIVE

I

SLEEP

I

DETECT

— 5 15 µA Average current

— 185 — µA Average current,

Power-on Reset

Low Threshold V

V

S

Low Hysteresis V

V

S

V

Low Threshold V

DD

V

Low Hysteresis V

DD

S_UVLO

S_UVLO_HYST

DD_TH

DD_TH_HYST

—2.5— VV

—100— mVVS voltage decreasing

—4— VV

—500— mVVDD voltage decreasing

I/O Pins - SMCLK (UCS1003-1), SMDATA (UCS1003-1), EM_EN, M1, M2, PWR_EN, S0, LATCH, ALERT#, A_DET#
(UCS1003-1 and UCS1003-3), CHRG# (UCS1003-2) – DC Parameters

Output Low Voltage V

Input High Voltage V

Input Low Voltage V

Leakage Current I

LEAK

OL

IH

IL

——0.4 VI

2.0 — — V PWR_EN, EM_EN, M1, M2,

— — 0.8 V PWR_EN, EM_EN, M1, M2,

— — ±5 µA Powered or unpowered,

Interrupt Pins - AC Parameters

ALERT#, A_DET# Pin

t

BLANK

—25—ms

Blanking Time

ALERT# Pin

t

MASK

—5—ms

Interrupt Masking Time

SMBus/I2C™ Timing (UCS1003-1 only)

Input Capacitance C

Clock Frequency f

Spike Suppression t

Bus Free Time Stop-to-Start t

Start Setup Time t

Start Hold Time t

Stop Setup Time t

Data Hold Time t

SU:STA

HD:STA

SU:STO

HD:DAT

IN

SMB

SP

BUF

—5—pF

10 — 400 kHz

1.3 — — µs

0.6 — — µs

0.6 — — µs

0.6 — — µs

0 — — µs When transmitting to the

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

V

no portable device attached.

SINK_IO

SMDATA, ALERT#,
A_DET#, CHRG#

LATCH, S0, SMDATA, SMCLK

LATCH, S0, SMDATA, SMCLK

V

—50 nsNote 2

master

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

= 3V to 5.5V,

PULLUP

 V

PULLUP

voltage increasing

S

voltage increasing

DD

DD

= 8 mA

 V

PULLUP

and I

1.68A).

LIM

DD

BUS

=0mA

DS200005346A-page 6  2014 Microchip Technology Inc.

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Data Hold Time t

Data Setup Time t

Clock Low Period t

Clock High Period t

Clock/Data Fall Time t

Clock/Data Rise Time t

Capacitive Load C

Timeout t

Idle Reset t

TIMEOUT

IDLE_RESET

HD:DAT

SU:DAT

LOW

HIGH

FALL

RISE

LOAD

0.3 — — µs When receiving from the

0.6 — — µs

1.3 — — µs

0.6 — — µs

——300nsMin = 20+0.1C

——300nsMin = 20+0.1C

— — 400 pF Per bus line, Note 2

25 — 35 ms Disabled by default, Note 2

350 — — µs Disabled by default, Note 2

High-Speed Dat a Swit ch

High-Speed Data Switch - DC Parameters

Switch Leakage Current I

HSW_OFF

Charger Resistance R

On Resistance R

On Resistance R

ON_HSW_1

Delta-On Resistance R

CHG

ON_HSW

ON_HSW

— ±0.5 — µA Switch open - D

—2—M D

—2—  Switch closed, VDD = 5V

—5—  Switch closed, VDD = 5V,

—±0.3—  Switch closed, VDD = 5V,

High-Speed Data Switch - AC Parameters

DP, DM Capacitance to

C

HSW_ON

— 4 — pF Switch closed, VDD = 5V

Ground

D

, DM Capacitance to

P

C

HSW_OFF

— 2 — pF Switch open, VDD = 5V

Ground

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

master

Note 3

Note 3

D
to ground.
V

ground (see Figure 1-2),
BC1.2 DCP charger
emulation active

test current = 8 mA,
test voltage = 0.4V,
see Figure 1-2

test current = 8 mA,
test voltage = 3.0V,
see Figure 1-2

I

TST

see Figure 1-2

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

to D

MIN

 VS.

DD

or D

POUT

= 8 mA, V

and I

PULLUP

MOUT

MOUT

1.68A).

LIM

TST

= 3V to 5.5V,

ns,

LOAD

ns,

LOAD

PIN

to D

POUT

,

, or all four pins

to V

BUS

or

= 0 to 1.5V,

 2014 Microchip Technology Inc. DS200005346A-page 7

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Turn-Off Time t

Turn-On Time t

HSW_OFF

HSW_ON

Propagation Delay t

Propagation Delay Skew t

Rise/Fall Time t

– DM Crosstalk X

D

P

Off Isolation O

PD

PD

F/R

TALK

IRR

— 400 — µs Time from state control

— 400 — µs Time from state control

—0.25— nsR

—25— psR

—10— nsR

—-40— dBR

—-30— dBR

-3 dB Bandwidth BW — 1100 — MHz R

To t al J it te r t

Skew of Opposite Transitions

t

J

SK(P)

—200— psR

—20— psR

of the Same Output

Port Power Switch

Port Power Switch - DC Parameter

Overvoltage Lockout V

On Resistance R

V

Leakage Current I

S

Back-Voltage Protection

LEAK_VS

V

S_OV

ON_PSW

BV_TH

—6— V

—55—m 4.75V < VS < 5.25V

— 2.2 — µA Sleep state into VS pin

—150— mVV

Threshold

Back-Drive Current I

BD_1

I

BD_2

—0 3 µAV

—0 2 µAV

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

(EM_EN, M1, M2) switch on to
switch off, R
C

(EM_EN, M1, M2) switch off to
switch on, R
C

f= 240MHz

V

Rise Time = Fall Time = 500 ps
at 480 Mbps (PRBS = 215–1)

V

Any powered power pin to any
unpowered power pin. Current
out of unpowered pin (Note 3)

Any powered power pin to any
unpowered power pin, except
for V
Power state and V
Active Power state. Current
out of unpowered pin (Note 3)

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

PULLUP

TERM

=5pF

LOAD

TERM

=5pF

LOAD

=50, C

TERM

=50, C

TERM

=50, C

TERM

=50, C

TERM

=50, C

TERM

=50, C

TERM

DPOUT=VDMOUT

=50, C

TERM

=50, C

TERM

> VS,

BUS

> V

S

S_UVLO

< V

DD

< V

DD

and I

DD

DD_TH

DD_TH

to V

1.68A).

LIM

,

,

BUS

= 3V to 5.5V,

=50,

=50,

=5pF

LOAD

=5pF

LOAD

=5pF

LOAD

=5pF

LOAD

=5pF,

LOAD

=5pF,

LOAD

= 350 mV DC

=5pF,

LOAD

=5pF

LOAD

in Detect

to V

S

BUS

in

DS200005346A-page 8  2014 Microchip Technology Inc.

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Selectable Current Limits I

Pin Wake Time t

SMBus Wake Time t

Idle Sleep Time t

PIN_WAKE

SMB_WAKE

IDLE_SLEEP

Thermal Regulation Limit T

LIM1

I

LIM2

I

LIM3

I

LIM4

I

LIM5

I

LIM6

I

LIM7

I

LIM8

REG

—570— mAI

—1000— I

—1130— I

—1350— I

—1680—

—2050—

—2280—

2700 2850 3000 I

—3—ms

—4—msUCS1003-1 only
—200— msUCS1003-1 only

— 110 — °C Die Temperature at which

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

(minimum mA setting)

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

I

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

I

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

I

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

LIM

(UCS1003-1 only)

I

LIM

(UCS1003-2/3)

current limit will be reduced

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

PULLUP

Resistor = 0 or 47 k

Resistor = 47 k

Resistor = 10 k or 56 k

Resistor = 56 k

Resistor = 12 k or 68 k

Resistor = 68 k

Resistor = 15 k or 82 k

Resistor = 82 k

Resistor = 18 k or 100 k

Resistor = 100 k

Resistor = 22 k or 120 k

Resistor = 120 k

Resistor = 27 k or 150 k

Resistor = 150 k

Resistor = 33 k or V

Resistor = V

and I

1.68A).

LIM

= 3V to 5.5V,













DD

DD

 2014 Microchip Technology Inc. DS200005346A-page 9

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Thermal Regulation

T

REG_HYST

—10— °CHysteresis for t

Hysteresis

Thermal Shutdown Threshold T

Thermal Shutdown Hysteresis T

TSD_HYST

Auto-Recovery Test Current I

Auto-Recovery Test Voltage V

Discharge Impedance R

DISCHARGE

TSD

TEST

TEST

— 135 — °C Die temperature at which port

— 35 — °C After shutdown due to

— 190 — mA Portable device attached,

— 750 — mV Portable device attached,

—100— 

Port Power Switch - AC Parameters

Turn-On Delay t

Turn-Off Time t

Turn-Off Time t

Turn-Off Time t

V

Output Rise Time t

BUS

OFF_PSW_INA

OFF_PSW_ERR

OFF_PSW_ERR

Soft Turn-on Rate I

Temperature Update Time t

DC_TEMP

ON_PSW

R_BUS

BUS/t

— 0.75 — ms PWR_EN active toggle to

— 0.75 — ms PWR_EN inactive toggle to

— 1 — ms Overcurrent Error, V

— 100 — ns TSD or Back-drive Error to

— 1.1 — ms Measured from 10% to 90% of

—100—mA/µs

— 200 — ms Programmable (UCS1003-1

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

functionality. Temperature
must drop by this value before
I

LIM

operation

power switch will turn off

T
temperature drop required
before port power switch can
be turned on again

V

V
Die Temp < T

Programmable (UCS1003-1
only), 250-1000 mV, default

listed

switch on time, V
not active

switch off time
C

Error, or Discharge Error to
switch off, C

switch off, C

V
I

LIM

only) 200-1600 ms, default

listed

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

PULLUP

value restored to normal

being reached, die

TSD

= 0V, Die Temp < T

BUS

= 0V before application,

BUS

TSD

= 120 μF

BUS

BUS

BUS

BUS

, C

LOAD

= 220 μF,

= 1.0A

and I

1.68A).

LIM

= 3V to 5.5V,

REG

TSD

discharge

BUS

Min

BUS

= 120 μF

= 120 μF

DS200005346A-page 10  2014 Microchip Technology Inc.

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Short Circuit Response Time t

Short Circuit Detection Time t

SHORT_LIM

SHORT

Latched Mode Cycle Time t

Auto-Recovery Mode

t

UL

CYCLE

— 1.5 — µs Time from detection of short to

— 6 — ms Time from detection of short to

— 7 — ms From PWR_EN edge transition

— 25 — ms Time delay before error

Cycle Time

Auto-Recovery Delay t

Discharge Time t

DISCHARGE

RST

— 20 — ms Portable device attached,

— 200 — ms Amount of time discharge

Port Power Switch Operation With Trip Mode Current Limiting

Region 2 Current Keep-Out I

Minimum V

Allowed at

BUS

BUS_R2MIN

V

BUS_MIN

—0.12— A

1.5 2.0 2.25 V

Output

Port Power Switch Operation with Constant Current Limiting (Variable Slope)

Region 2 Current Keep-Out I

Minimum V

Allowed at

BUS

BUS_R2MIN

V

BUS_MIN

—1.68— A

1.5 2.0 2.25 V

Output

Current Measurement (UCS1003-1 only) - DC

Current Measurement Range I

Reported Current

BUS_M

D

IBUS_M

0 — 2988.6 mA Range 0-255 LSB (see Note 4)

— 11.72 — mA 1 LSB

Measurement Resolution

Current Measurement
Accuracy

—±2— %180mA < I

—±2—LSBI

Current Measurement (UCS1003-1 only) - AC

Sampling Rate — 500 — µs

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

current limit applied. No C
applied

port power switch disconnect
and ALERT# pin assertion.

from inactive to active to begin
error recovery

condition check

Programmable (UCS1003-1
only) 10-25 ms, default listed

V
this time

Programmable (UCS1003-1
only) 10-25 ms, default listed

resistor applied

Programmable (UCS1003-1
only) 100-400 ms, default

listed

BUS

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

PULLUP

must be  V

BUS

< 180 mA

and I

LIM

< I

BUS

1.68A).

= 3V to 5.5V,

BUS

after

TEST

LIM

 2014 Microchip Technology Inc. DS200005346A-page 11

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Charge Rationing (UCS1003-1 only) - DC

Accumulated Current

—±4.5— %

Measurement Accuracy

Charge Rationing (UCS1003-1 only) - AC

Current Measurement Update

t

PCYCLE

—1— s

Time

Attach/Removal Detection

V

BUS

On Resistance R

Leakage Current I

Current Limit I

ON_BYP

LEAK_BYP

DET_CHG

I

BUS_BYP

/

—50— 

— — 3 µA Switch off, Note 2

—2—mAV

Attach/Removal Detection - DC

Attach Detection Threshold I

Primary Removal Detection

I

REM_QUAL_ACT

DET_QUAL

— 800 — µA Programmable (UCS1003-1

— 700 — µA Programmable (UCS1003-1

Threshold

I

REM_QUAL_DET

— 800 — µA Programmable (UCS1003-1

Attach/Removal Detection - AC

Attach Detection Time t

Removal Detection Time t

Allowed Charge Time t

DET_QUAL

REM_QUAL

DET_CHARGE

— 100 — ms Time from Attach to A_DET#

—1000— ms

—800— msC

Charger Emulation Profile

General Emulation - DC

Charging Current Threshold I

BUS_CHG

— 46.9 — mA Default value for UCS1003-1
—175.8— mAUCS1003-2 and UCS1003-3

Charging Current

I

BUS_CHG_RNG

11.72 — 175.8 mA Note 5

Threshold Range

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

Bypass - DC

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

PULLUP

= 5V and V

DD

only) 200–1000 µA, default

listed

only) 100–900 µA, default

listed, Active Power state

only) 200–1000 µA, default

listed, Detect Power state (see

Section 8 .4 “Removal
Detection”)

assert (UCS1003-1 and
UCS1003-3 only)

= 500 µF maximum,

BUS

Programmable 200–2000 ms,
default listed

LIM

and I

1.68A).

LIM

= 3V to 5.5V,

> 4.75V

BUS

DS200005346A-page 12  2014 Microchip Technology Inc.

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

DP-DM Shunt Resistor Value R

Response Magnitude

SX_RXMAG_DVDR

DCP_RES

——200 Connected between D

93 — 200 k Note 5
(voltage divider option
resistance range)

Resistor Ratio Range

SX_RATIO 0.25 — 0.66 V/V Note 5

(voltage divider option)

Resistor Ratio Accuracy

SX_RATIO_ ACC

— ±0.5 — % Average over range
(voltage divider option)

Response Magnitude

SX_RXMAG_RES

1.8 — 150 k Note 5

(resistor option range)

Internal Resistor Tolerance
(resistor option)

Response Magnitude

SX_RXMAG_RES

_ACC

SX_RXMAG_VOLT

— ±10 — % Average over range

0.4 — 2.2 V Note 5

(voltage option range)

Voltage Option Accuracy

Voltage Option Accuracy

Voltage Option Accuracy

Voltage Option Output

Response Magnitude

SX_RXMAG_VOLT

_ACC

SX_RXMAG_VOLT

_ACC_ 150

SX_RXMAG_VOLT

_ACC_ 250

SX_RXMAG_VOLT

_BC

— ±1 — % No load, average over range

— -6 — % 150 µA load,

— -10 — % 250 µA load,

0.5 — — V D

SX_PUPD 10 — 150 µA SX_RXMAG_VOLT = 0

(Zero Volt Option Range)

Pull-Down Current Accuracy

Pull-Down Current

Stimulus Voltage

SX_PUPD
_ACC_3p6

SX_PUPD
_ACC_BC

—±5— %D

50 — — µA Setting = 100 µA

SX_TH 0.3 — 2.2 V Note 5

Threshold Range

Stimulus Voltage Accuracy SX_TH_ ACC — ±2 — % Average over range

Stimulus Voltage Accuracy

SX_TH_ACC_BC

0.25 — — V At SX_TH = 0.3V, Note 3

General Emulation - AC

Emulation Reset Time t

Emulation Reset Time Range

t

EM_RESET_ RNG

Emulation Timeout Range t

EM_RESET

EM_ TIMEOUT

—50—msDefault

50 — 175 ms Note 5

0.8 — 12.8 s Note 5

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

and D
0V < D

average over range

average over range

Note 3

Note 5

Compliance voltage

D
Compliance voltage, Note 3

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

= 3V to 5.5V,

PULLUP

,

MOUT

= D

POUT

= 0.6V, 250 µA load,

MOUT

or D

POUT

POUT

and I

or D

LIM

MOUT

MOUT

1.68A).

MOUT

POUT

< 3V

= 3.6V

= 0.15V

 2014 Microchip Technology Inc. DS200005346A-page 13

UCS1003-1/2/3

TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrica l Charact eristics: Unless otherwise specified, V

= -40°C to +85°C; all Typical values at VDD = VS = 5V, TA = +27°C.

T

A

Characteristic Sym. Min. Typ. Max. Unit Conditions

Stimulus Delay,

t

STIM_DEL

0 — 100 ms Note 5

SX_TD Range

Emulation Delay t

RES_EM

— — 0.5 s Time from set impedance to

Note 1: For split supply systems using the Attach Detection feature, V

2: This parameter is ensured by design and not 100% tested.
3: This parameter is characterized, but not 100% production tested.
4: The current measurement full-scale range maximum value is 3.0A. However, the UCS1003-1 cannot report

values above I

LIM

(if I

BUS_R2MIN

 I

LIM

) or above I

5: The Min and Max values represent the boundaries of a programmable range for UCS1003-1 only. Each value

in the range is typical.

= 4.5V to 5.5V, VS = 2.9V to 5.5V, V

DD

impedance appears on D

Note 3

must not exceed VDD+150mV.

S

BUS_R2MIN

(if I

BUS_R2MIN

> I

LIM

and I

PULLUP

1.68A).

LIM

= 3V to 5.5V,

P/DM

,

FIGURE 1-1: USB Rise Time/Fall Time Measurement.

DS200005346A-page 14  2014 Microchip Technology Inc.

UCS1003-1/2/3

D

PIN

D

POUT

R

CHG

V

BUS

V

TST

R

CHG

I

TST

D

MIN

R

CHG

V

BUS

V

TST

R

CHG

I

TST

D

MOUT

FIGURE 1-2: Description of DC Terms.

TABLE 1-3: TEMPERATURE SPECIFICATIONS

Parameters Sym Min Typ Max Units Conditions

Temperature Ranges

Operating Temperature Range T

Storage Temperature Range T

Thermal Package Resistances - see Table 1-1

-40 — +85 °C

A

-55 — +150 °C

A

 2014 Microchip Technology Inc. DS200005346A-page 15

UCS1003-1/2/3

NOTES:

DS200005346A-page 16  2014 Microchip Technology Inc.

UCS1003-1/2/3

-1

0

1

2

3

4

5

6

-1

0

1

2

3

4

5

6

0246810

VS= VDD= 5V
I

LIM

= 3A max. (2.85A typical), short applied at 2 ms

ALERT #

I

BUS

V

BUS

0

1

2

3

4

5

6

0

1

2

3

4

5

6

0

5

010203040

50

V

DD

ALERT# Pin

I

BUS

Current

Time (ms)

Voltage (V)Current (A) Voltage (V)

VS=VDD= 5V, short applied at 16 ms

-2

-1

0

1

2

3

4

5

6

02040

-2

0

2

4

6

8

10

12

14

Voltage (V)

VS=VDD= 5V,
I

LIM

= 2.05A (typical),

short applied at 17.2 μs

V

I

BUS

-1

0

1

2

3

4

5

6

0 100 200 300 400 500

Voltage (V)

V

BUS

EM_EN

VS= VDD= 5V
M2 = 0,
M1 = PWR_EN = 1

2.0 TYPICAL PERFORMANCE CURVES

Note: The graphs and tables provided following this note are a statistical summary based on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

Note: Unless otherwise indicated, V

= VS = 5V, TA = +27°C.

DD

FIGURE 2-1: USB-IF High-Speed Eye Diagram (Without Data Switch).

FIGURE 2-4: Power-Up Into a Short.

BUS

Current (A)

FIGURE 2-2: USB-IF High-Speed Eye Diagram (With Data Switch).

Voltage (V)

FIGURE 2-3: Short Applied After Power-Up.

 2014 Microchip Technology Inc. DS200005346A-page 17

Time (ms)

Current (A)

Time (μs)

FIGURE 2-5: Internal Power Switch Short Response.

Time (ms)

FIGURE 2-6: V

Discharge Behavior.

BUS

UCS1003-1/2/3

0

10

20

30

40

50

60

70

80

90

0.01 0.1 1 10 100 1000

Off Isolation (dB)

D

POUT

= D

MOUT

= 0.35V

-20

-18

-16

-14

-12

-10

-8

-6

-4

-2

0.01 1 100 10000

D

POUT

= D

MOUT

= 0.35V

0.0

0.5

1.0

1.5

2.0

2.5

-40 -15 10 35 60 85

On Resistance (

:

)

D

POUT

= D

MOUT

= 0.4V

0

10

20

30

40

50

60

70

-40 -15 10 35 60 85

On Resistance (m

:

)

0

20

40

60

80

100

120

140

160

180

200

-40 -15 10 35 60 85

Resistance (

:

)

D

= D

= 3V

D

POUT

= D

MOUT

= 0.15V

0.5

0.55

0.6

0.65

0.7

0.75

0.8

0.85

0.9

0.95

1

-40 -15 10 35 60 85

Time (ms)

VS= VDD= 5V

Turn on time

Note: Unless otherwise indicated, V

Frequency (MHz)

= VS = 5V, TA = +27°C.

DD

FIGURE 2-7: Data Switch Off Isolation vs. Frequency.

0

Gain (dB)

Temperature (°C)

FIGURE 2-10: Power Switch On Resistance vs. Temperature.

POUT

MOUT

Frequency (MHz)

FIGURE 2-8: Data Switch Bandwidth vs. Frequency.

Temperature (°C)

FIGURE 2-9: Data Switch On Resistance vs. Temperature.

DS200005346A-page 18  2014 Microchip Technology Inc.

Temperature (°C)

FIGURE 2-11: R

DCP_RES

Resistance

vs.Temperature.

Turn off time

Temperature (°C)

FIGURE 2-12: Power Switch On/Off Time vs. Temperature.

UCS1003-1/2/3

5.9

5.91

5.92

5.93

5.94

5.95

5.96

5.97

5.98

5.99

6

-40 -15 10 35 60 85

Threshold Voltage (V)

VDD= 5V

2

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3

-40 -15 10 35 60 85

V

S

Threshold Voltage (V)

Threshold

Hysteresis

VDD= 5V

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

0 500 1000 1500 2000 2500 3000 3500 4000

VS= VDD= 5V
S0 = '1'
PWR_EN disabled

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

-40 -15 10 35 60 85

VS= VDD= 5V
I

LIM

= 3.0 A max. (2.85A typical)

Note: Specification is 0% maximum
and -10% minimum

Current Limit Accuracy (%)

-5

-4

-3

-2

-1

0

1

2

3

4

5

00.511.522.53

Accuracy (%)

VS= VDD= 5V

0

100

200

300

400

500

600

700

800

-40 -15 10 35 60 85

Supply Current (μA)

I

DD

VS= VDD= 5V

IDD+ I

S

I

S

Note: Unless otherwise indicated, V

Temperature (°C)

= VS = 5V, TA = +27°C.

DD

FIGURE 2-13: VS Overvoltage Threshold vs. Temperature.

Temperature (°C)

FIGURE 2-16: Trip Current Limit Operation vs. Temperature.

Temperature (°C)

FIGURE 2-14: V
vs. Temperature.

Voltage (V)

FIGURE 2-15: Detect State V

 2014 Microchip Technology Inc. DS200005346A-page 19

Undervoltage Threshold

S

Current (μA)

vs. I

BUS

BUS

Current (A)

FIGURE 2-17: I

Measurement

BUS

Accuracy.

Temperature (°C)

.

FIGURE 2-18: Active State Current vs. Temperature.

UCS1003-1/2/3

0

50

100

150

200

250

-40 -15 10 35 60 85

Detect Current (μA)

I

DD

VS= VDD= 5V

IDD+ I

S

I

S

0

1

2

3

4

5

6

7

8

9

10

-40 -15 10 35 60 85

I

DD

VS= VDD= 5V

IDD+ I

S

I

S

0%

5%

10%

15%

20%

25%

30%

0%

5%

10%

15%

20%

25%

30%

35%

40%

Samples (%)

0%

5%

10%

15%

20%

25%

30%

Samples (%)

0%

5%

10%

15%

20%

25%

30%

35%

Samples (%)

Note: Unless otherwise indicated, V

Temperature (°C)

= VS = 5V, TA = +27°C.

DD

FIGURE 2-19: Detect State Current vs. Temperature.

Sleep Current (μA)

0.928

0.940

0.952

0.964

0.976

0.988

1.000

1.012

1.024

V

BUS

Current (A)

1.036

FIGURE 2-22: ILIM2 Trip Current Distribution.

1.048

1.060

1.072

Temperature (°C)

FIGURE 2-20: Sleep State Current vs. Temperature.

Samples (%)

0.534

0.540

0.546

0.552

FIGURE 2-21: ILIM1 Trip Current Distribution.

DS200005346A-page 20  2014 Microchip Technology Inc.

0.558
V

BUS

0.564

0.570

Current (A)

0.576

0.582

0.588

0.594

0.600

0.606

1.090

1.100

1.110

V

BUS

1.120

1.130

1.140

Current (A)

1.150

1.160

1.070

1.080

FIGURE 2-23: ILIM3 Trip Current Distribution.

1.260

1.275

1.290

1.305

1.320

1.335

1.350

1.365

1.380

V

BUS

Current (A)

1.395

FIGURE 2-24: ILIM4 Trip Current Distribution.

1.170

1.410

1.180

1.425

1.190

1.440

UCS1003-1/2/3

0%

5%

10%

15%

20%

25%

30%

35%

40%

0%

5%

10%

15%

20%

25%

30%

0%

5%

10%

15%

20%

25%

30%

Samples (%)

0%

5%

10%

15%

20%

25%

Note: Unless otherwise indicated, V

Samples (%)

1.560

1.580

1.600

1.620

1.640

1.660
Current (A)

BUS

1.680

V

= VS = 5V, TA = +27°C.

DD

1.700

1.720

1.740

FIGURE 2-25: ILIM5 Trip Current Distribution.

Samples (%)

1.760

1.780

1.800

2.160

2.180

2.200

2.220

2.240

2.260

2.280

2.300

2.320

V

BUS

Current (A)

2.340

FIGURE 2-27: ILIM7 Trip Current Distribution.

30%

Samples (%)

2.360

2.380

2.400

1.942

1.960

1.978

1.996

2.014

2.032

2.050

2.068

2.086

2.104

2.122

2.140

V

Current (A)

BUS

FIGURE 2-26: ILIM6 Trip Current Distribution.

2.158

FIGURE 2-28: ILIM8 Trip Current Distribution.

2.700

2.725

2.750

2.775

2.800
V

BUS

2.825

2.850

Current (A)

2.875

2.900

2.925

2.950

2.975

3.000

 2014 Microchip Technology Inc. DS200005346A-page 21

UCS1003-1/2/3

NOTES:

DS200005346A-page 22  2014 Microchip Technology Inc.

 2014 Microchip Technology Inc. DS200005346A-page 23

3.0 PIN DESCRIPTION

Descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN FUNCTION TABLE

UCS1003-

1/2/3

4x4 QFN

1 M1 Active mode selector input #1 DI Connect to ground or V

2 M2 Active mode selector input #2 DI Connect to ground or V

3V

4V

5 COMM_SEL/I

6 SEL Selects polarity of PWR_EN control and, in the

7V

8

9VDDMain power supply input for chip functionality Power n/a

10 PWR_EN Port power switch enable input.

11 SMDATA/LATCH SMDATA (UCS1003-1 only)- SMBus data input/output

Note 1: Total leakage current from pins 3 and 4 (V

2: It is recommended to use 2 M pull-down resistors on the D

ger Emulation profile with the high-speed data switch open. The 2 M value is based on BC1.1 impedance characteristics for Dedicated Charging Ports.

3: To ensure operation, the PWR_EN pin must be enabled, as determined by the SEL pin decode, when it is not driven by an external device. Furthermore,

one of the M1, M2 or EM_EN pins must be connected to V
M1, M2 and EM_EN pins are connected to ground, the UCS1003-1 will remain in the Sleep or Detect state unless activated via the SMBus (UCS1003-2
and UCS1003-3 will remain in Sleep or Detect state indefinitely).

Symbol Function Pin Type Connection Type if Pin Not Used

BUS1

BUS2

Voltage output from Power Switch. These pins are
internally connected and must be tied together.

COMM_SEL (UCS1003-1 only) - Selects SMBus or

LIM

Hi-Power

Note 1

AIO n/a

Leave open

Stand-Alone mode of operation (see Table 11-1).

I

- Selects the hardware current limit at power-up.

LIM

AIO n/a

UCS1003-1, SMBus address (see Table 11-2).

S1

V

S2

Voltage input to Power Switch. These pins are internally
connected and must be tied together.

Hi-Power Connect to ground

DI Connect to ground or VDD (see Note 3)

Polarity determined by SEL pin.

DIOD n/a

(requires pull-up resistor)

LATCH - In Stand-Alone mode, Latch/Auto-Recovery

DI

fault handling mechanism selection input (see

Section 7 .5 “Fault Handling Mechanism”)

) to ground must be less than 100 µA for proper Attach/Removal Detection operation.

BUS

and/or D

POUT

if all three are not driven from an external device. If the PWR_EN pin is disabled or all of the

DD

pin if a portable device stimulus is expected when using the Customer Char-

MOUT

(see Note 3)

DD

(see Note 3)

DD

UCS1003-1/2/3

DS200005346A-page 24  2014 Microchip Technology Inc.

TABLE 3-1: PIN FUNCTION TABLE

UCS1003-1/2/3

UCS1003-

1/2/3

Symbol Function Pin Type Connection Type if Pin Not Used

4x4 QFN

12 SMCLK/S0 SMCLK (UCS1003-1 only) - SMBus Clock Input

DI n/a

(requires pull-up resistor)

S0 - In Stand-Alone mode, enables Attach/Removal
Detection feature (see Section 5.3.6 “S0 Input”)

13 ALERT# Active-low error event output flag

OD Connect to ground

(requires pull-up resistor)

14 D

PIN

USB data input (plus) AIO Connect to ground or ground through a

resistor

15 D

MIN

USB data input (minus) AIO Connect to ground or ground through a

resistor

16 D

17 D

MOUT

POUT

18 A_DET#

(UCS1003-1 and UCS1003-3)

CHRG#

(UCS1003-2)

19 EM_EN Active mode selector input DI Connect to ground or V

20

GND Ground Power n/a

21 EP Exposed Thermal Pad. Must be connected to electrical

USB data output (minus) AIO (see Note 2) Connect to ground

USB data output (plus) AIO (see Note 2) Connect to ground

Active-low device Attach Detection output flag

OD Connect to ground

(requires pull-up resistor)

Active-low “Charging Active” output flag (requires pull-up

OD Connect to ground

resistor)

EP n/a

(see Note 3)

DD

ground.

Note 1: Total leakage current from pins 3 and 4 (V

2: It is recommended to use 2 M pull-down resistors on the D

) to ground must be less than 100 µA for proper Attach/Removal Detection operation.

BUS

POUT

and/or D

pin if a portable device stimulus is expected when using the Customer Char-

MOUT

ger Emulation profile with the high-speed data switch open. The 2 M value is based on BC1.1 impedance characteristics for Dedicated Charging Ports.

3: To ensure operation, the PWR_EN pin must be enabled, as determined by the SEL pin decode, when it is not driven by an external device. Furthermore,

one of the M1, M2 or EM_EN pins must be connected to V

if all three are not driven from an external device. If the PWR_EN pin is disabled or all of the

DD

M1, M2 and EM_EN pins are connected to ground, the UCS1003-1 will remain in the Sleep or Detect state unless activated via the SMBus (UCS1003-2
and UCS1003-3 will remain in Sleep or Detect state indefinitely).

TABLE 3-2: PIN TYPES DESCRIPTION

Pin Type Description

Power This pin is used to supply power or

ground to the device

Hi-Power This pin is a high-current pin

AIO Analog Input/Output - this pin is used

as an I/O for analog signals.

DI Digital Input - this pin is used as a

digital input. This pin will be glitch-free.

DIOD Open-Drain Digital Input/Output - this

pin is bidirectional. It is open-drain and
requires a pull-up resistor. This pin will
be glitch-free.

OD Open-Drain Digital Output - used as a

digital output. It is open-drain and
requires a pull-up resistor. This pin will
be glitch-free.

EP Exposed Thermal Pad

UCS1003-1/2/3

 2014 Microchip Technology Inc. DS200005346A-page 25

UCS1003-1/2/3

NOTES:

DS200005346A-page 26  2014 Microchip Technology Inc.

UCS1003-1/2/3

4.0 TERMS AND ABBREVIATIONS

Note: In the case of UCS1003-1, the M1, M2, PWR_EN and EM_EN pins each have configuration bits (<pin

name>_SET in Section 10.4.3 “Switch Configuration Register”) that may be used to perform the same

function as the external pin state. These bits are accessed via the SMBus/I
respective pin. This OR’d combination of pin state and register bit is referenced as the <pin name> control.

TABLE 4-1: TERMS AND ABBREVIATIONS

Term/Abbreviation Description

Active mode Active power state operation mode: Data Pass-through, BC1.2 SDP, BC1.2 CDP, BC1.2 DCP

or Dedicated Charger Emulation Cycle.

Attach Detection An Attach Detection event occurs when the current drawn by a portable device is greater than

I

DET_QUAL

for longer than t

DET_QUAL

Attachment The physical insertion of a portable device into a USB port that UCS1003-1/2/3 is controlling.

CC Constant Current

CDM Charged Device Model. JEDEC model for characterizing susceptibility of a device to damage

from ESD.

CDP or USB-IF
BC1.2 CDP

Charging Downstream Port. The combination of the UCS1003-1/2/3 CDP handshake and an
active standard USB host comprises a CDP. This enables a BC1.2 compliant portable device
to simultaneously draw current up to 1.5A while data communication is active. The USB
high-speed data switch is closed in this mode.

Charge Enable When a charger emulation profile has been accepted by a portable device and charging

commences.

Charger Emulation
Profile

Representation of a charger comprised of D
a defined set of signatures or handshaking protocols.

Connection USB-IF term which refers to establishing active USB communications between a USB host

and a USB device.

Current Limiting
Mode

Determines the action that is performed when the I
opens the port power switch. Constant Current (variable slope) allows V
the portable device.

DCE Dedicated Charger Emulation. Charger emulation in which the UCS1003-1/2/3 can deliver

power only (by default). No active USB data communication is possible when charging in this
mode (by default).

DCP or USB-IF
BC1.2 DCP

Dedicated Charging Port. This functions as a dedicated charger for a BC1.2 portable device.
This allows the portable device to draw currents up to 1.5A with Constant Current Limiting
(and beyond 1.5A with Trip Current Limiting). No USB communications are possible (by
default).

DC Dedicated Charger. A charger which inherently does not have USB communications, such as

an A/C wall adapter.

Disconnection USB-IF term which refers to the loss of active USB communications between a USB host and

a USB device.

Dynamic Thermal
Management

The UCS1003-1/2/3 automatically adjusts port power switch limits and modes to lower internal
power dissipation when the thermal regulation temperature value is approached.

Enumeration A USB-specific term indicating that a host is detecting and identifying USB devices.

Handshake Application of a charger emulation profile that requires a response. Two-way communication

between the UCS1003-1/2/3 and the portable device.

HBM Human Body Model

HSW High-speed switch

I

BUS_R2MIN

Current limiter mode boundary

.

POUT

, D

and V

MOUT

current reaches the I

BUS

2

C and are OR’d with the

signaling, which make up

BUS

threshold. Trip

LIM

to be dropped by

BUS

 2014 Microchip Technology Inc. DS200005346A-page 27

UCS1003-1/2/3

TABLE 4-1: TERMS AND ABBREVIATIONS (CONTINUED)

Term/Abbreviation Description

I

LIM

Legacy USB devices that require non-BC1.2 signatures be applied on the D

OCL Overcurrent limit

POR Power-on Reset

Portable Device USB device attached to the USB port.

Power Thief A USB device that does not follow the handshaking conventions of a BC1.2 device or Legacy

Removal Detection A Removal Detection event occurs when the current load on the V

Removal The physical removal of a portable device from a USB port that the UCS1003-1/2/3 is controlling.

Response An action, usually in response to a stimulus, in charger emulation performed by the UCS1003-

SDP or USB-IF SDP Standard downstream port. The combination of the UCS1003-1/2/3 high-speed switch being

Signature Application of a charger emulation profile without waiting for a response. One-way communi-

Stand-Alone Mode Indicates that the communications protocol is not active and all communications between the

Stimulus An event in charger emulation detected by the UCS1003-1/2/3 device via the USB data lines.

The I
port power switch is opened. In Constant Current mode, when the current exceeds I
ation continues at a reduced voltage and increased current; if V
V

current threshold used in current limiting. In Trip mode, when I

BUS

BUS_MIN

, the port power switch is opened.

is reached, the

LIM

voltage drops below

BUS

and D

POUT

MOUT

, oper-

LIM

pins to

enable charging.

devices and draws current immediately upon receiving power (i.e., a USB book light, portable
fan, etc).

pin drops to less than

I

REM_QUAL

for longer than t

REM_QUAL

.

BUS

1/2/3 device via the USB data lines.

closed with an upstream USB host present comprises a BC1.2 SDP. This enables a BC1.2
compliant portable device to simultaneously draw current up to 0.5A while data communication
is active.

cation from the UCS1003-1/2/3 to the portable device.

UCS1003-1/2/3 and a controller are done via the external pins only (M1, M2, EM_EN,
PWR_EN, S0 and LATCH as inputs, and ALERT# and A_DET# as outputs).

DS200005346A-page 28  2014 Microchip Technology Inc.

UCS1003-1/2/3

UCS1003-1

ALERT#

3V– 5.5V

Device

D

POUT

D

MOUT

5V

V

BUS1

V

BUS2

V

S1

V

S2

A_DET#

5V Host

C

BUS

USB Host

3V– 5.5V

C

IN

V

DD

D

PIN

D

MIN

V

DD

EM_EN

M1

M2

PWR_EN

SMDATA

SMCLK

SEL

COMM_SEL/I

LIM

GND

V

DD

5.0 GENERAL DESCRIPTION

The UCS1003-1/2/3 family of devices provides a single
USB port power switch for precise control of up to 3.0A
continuous current with Overcurrent Limit (OCL),
dynamic thermal management, latch or Auto-Recovery
fault handling, selectable active-high or -low enable,
undervoltage and overvoltage lockout, and back­voltage protection.

Split supply support for V
low power in system standby states.

In addition to power switching and current limiting, the
UCS1003-1/2/3 provides charger emulation profiles to
charge a wide variety of portable devices, including USB­IF BC1.2 (CDP or DCP modes), YD/T-1591 (2009), 12W
charging, most Apple, Samsung and RIM portable

devices and many others (refer to Section 9.0 “Active
State” for more information on preloaded charger

emulation profiles). The UCS1003-1 has a custom
programmable charger emulation profile for portable
device support for fully host controlled charger emulation.

and VDD is an option for

BUS

The UCS1003-1 also provides current monitoring to allow
intelligent management of system power and charge
rationing for controlled delivery of current regardless of
the host power state. This is especially important for bat­tery-operated applications that need to provide power
without excessively draining the battery, or that require
power allocation depending on application activities.

Figure 5-1 shows a UCS1003-1 full-featured system

configuration in which the UCS1003-1 provides a port
power switch and low-power Attach Detection with
wake-up signaling (wake on USB). The current limit is
established at power-up. It can be lowered if required
after power-up via the SMBus/I
also provides configurable USB data line charger
emulation, programmable current limiting (as
determined by the accepted charger emulation profile),
active current monitoring and port charge rationing.

2

C. This configuration

FIGURE 5-1: UCS1003-1 System Configuration (with Charger Emulation, SMBus Control and USB Host).

 2014 Microchip Technology Inc. DS200005346A-page 29

UCS1003-1/2/3

UCS1003-X

LATCH

ALERT#

PWR_EN

3V– 5.5V

GND

Device

D

PIN

D

MIN

D

POUT

D

MOUT

V

DD

5V

V

BUS1

V

BUS2

V

S1

V

S2

COMM_SEL/I

LIM

3V– 5.5V

Auto-Recovery

Upon Fault

Latch
Upon

Fault

EM_EN

M1

M2

SEL

5V Host

C

BUS

USB Host

S0

Disable

Detect

State

Enable

Detect

State

C

IN

V

DD

A_DET# / CHRG#

Figure 5-2 shows a system configuration in which the

UCS1003-1/2/3 provides a USB data switch, port
power switch, low-power Attach Detection and portable
device Attach/Removal Detection signaling. This
configuration does not include configurable data line
charger emulation, programmable current limiting or
current monitoring and rationing.

FIGURE 5-2: UCS1003-1/2/3 System Configuration (Charger Emulation, No SMBus, with USB Host).

DS200005346A-page 30  2014 Microchip Technology Inc.