Datasheet AP1212 Datasheet (diodes incorporated)

AP1212

Features

• Compliant to USB specifications

• Dual independent switches control

• 2.7V to 5.5V input voltage

• 500mA minimum continuous current per port

• 110mΩ typical on-resistance

• 1.25A maximum short circuit current limit

• Independent open-drain fault flag pins

• 110μA typical on-state supply current

• 1μA typical off-state supply current

• Output can be forced higher than input (off-state)

• Thermal shutdown

• 2.4V typical under voltage lockout (UVLO)

• 1ms turn-on (soft-start) and fast turn-off

• Enable active-high (H) or active-low (L)

• SOP-8L: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• USB hubs

• Hot plug-in power supplies

• Battery-charger circuits

DUAL USB HIGH-SIDE POWER SWITCH

General Description

The AP1212 series are dual integrated high-side power switch
with independent enable and flag functions, optimized for
self-powered and bus-powered Universal Serial Bus (USB)
applications. The AP1212 series support the following USB
requirements: each switch channel supplies up to 500mA as
required by USB downstream devices; the switch’s low
on-resistance meets USB voltage drop requirements; fault
current is limited to typically 1000mA, well below the UL 25VA
safety requirements; and a flag output is available to indicate fault
conditions to the local USB controller. Soft start eliminates the
momentary voltage drop on the upstream port that may occur
when the switch is enabled in bus-powered applications.
Additional features include thermal shutdown to prevent
catastrophic switch failure from high-current loads, under voltage
lockout (UVLO) to ensure that the device remains off unless there
is a valid input voltage present, and 3.3V and 5V logic compatible
enable inputs.

Ordering Information

A P 1 2 1 2 X X X X

Enable
Active -High

:

H

Active -Low

:

L

Package

S:SOP-8L

Lead Free

L : Lead Free

G : Green

Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Device

(Note 3)

AP1212XS

Package

Code

Packaging

S SOP-8L 100 -U 2500/Tape & Reel -13

Quantity

Tube 13” Tape and Reel

Part Number

Suffix

Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be on found our website at
http://www.diodes.com/datasheets/ap02001.pdf.

Packing

U

:

-

Tube

-13:Taping

Quantity

Part Number

Suffix

AP1212 Rev. 2 1 of 12 FEBRUARY 2007

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AP1212

Pin Assignments

EN1

FLG1

FLG2

EN2

1

2

3

4

(Top View)

AP1212

DUAL USB HIGH-SIDE POWER SWITCH

OUT1

8

IN

7

GND

6

5

OUT2

SOP-8L

Pin Descriptions

Name Description

EN1
EN2

FLG1
FLG2

GND Supply return.

IN

OUT1
OUT2

AP1212 Rev. 2 2 of 12 FEBRUARY 2007

Enable: Logic-compatible enable

input. ( H: active high, L: active low).
Do not float.

Fault Flag: Active-low, open-drain

output. Indicates over current,
UVLO, and thermal shutdown.

Supply Input: Output MOSFET drain.

Also supplies IC’s internal circuitry.
Connect to positive supply.

Switch Output: Output MOSFET

source. Typically connect to
switched side of load.

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AP1212

Block Diagram

FLG1

EN1

EN2

FLG2

Charge

Pump

Thermal

Shutdown

Charge

Pump

DUAL USB HIGH-SIDE POWER SWITCH

OUT1

Driver

Current

Limit

UVLO

Current

Limit

Driver

CS

CS

Power N-MOSFET

IN

OUT2

Absolute Maximum Ratings (Note 3)

Symbol Parameter Rating Unit

VIN Supply Voltage +7 V

V

Fault Flag Voltage +7 V

FLG

I

Fault Flag Current 50 mA

FLG

V

Output Voltage +7 V

OUT

VEN Control Input Range –0.3 to V
TST Storage Temperature -65 to +150

ESD HBM Note 3 500 V

ESD MM Note 3 150 V

+2 V

IN

Power N-MOSFET

°C

AP1212 Rev. 2 3 of 12 FEBRUARY 2007

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O

p

/

/

AP1212

DUAL USB HIGH-SIDE POWER SWITCH

Operating Ratings (Note 4)

Symbol Parameter Rating Unit

VIN Supply Voltage

T

O

P

Θ

Θ

JA
JC

Thermal Resistance SOP Junction to Ambient

Thermal Resistance SOP J unction to Case

erating Junction Temperature -40 to +125

Note: 3. Exceeding the absolute maximum rating may damage the device.

4. The device is not guaranteed to function outside its operating rating.

Electrical Characteristics (Under the conditions of V

=+5V and TA =25oC, unless otherwise specified)

IN

Symbol Parameter Conditions Min. Typ. Max. Unit

Switch off, OUT = open (Note 6)

ICC Supply Current

All switches on, OUT = open

(Note 6)
VIT Enable Input Threshold (Note 6) 0.8 1.7 2.40 V
IEN Enable Input Current VEN = 0V to 5.5V -1

CEN Enable Input Capacitance 1 pF

= 2.7V ~ 5.5V, I

V

R

Switch Resistance

DS(ON)

T

Output Turn-On Delay

OND

TR Output Turn-On Ri se Time

T

Output Turnoff Delay

OFFD

TF Output Turnoff Fall Time

I

Output Leakage Current Each output (output disabled) 10 µA

LEAK

I

Continuous Load Current Each output 0.6 A

OUT

IOS Short-circuit Current Limit

I

Current-Limit Threshold

LIM

TTS

RFO
I

FOH

Over-temperature
Shutdown Threshold

Error Flag Output
Resistance

Error Flag Off Current V

UVLO UVLO Threshold

IN

500mA, each switch

R

= 10Ω each output

L

R

= 10Ω each output

L

R

= 10Ω each output

L

R

= 10Ω each output

L

Each output (enable into load),

V

= 0V

OUT

Ramped load applied to

enabled output

TJ increasing 140

T

decreasing 130

J

V

= 5V, IL = 10mA 10 25

IN

V

= 3.3V, IL = 10mA 15 40

IN

= 5V 0.01 1 µA

FLAG

VIN = increasing 2.5 V

V

= decreasing 2.3 V

IN

OUT

=

Note: 5. Devices are ESD sensitive. Handling precautions are recommended. Human Body model, tested per JEDEC 22-A114.
Machine model, tested per JEDEC 22-A115.

6. Off is V

≦0.8V and on is VEN≧2.4V for the AP1212H. Off is VEN≧2.4V and on is VEN≦0.8V for the AP1212L.

EN

AP1212 Rev. 2 4 of 12 FEBRUARY 2007

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+2.7 to +5.5 V

°C

165

26

0.50 5 µA
110 160 µA

±0.01

°C
°C

1 µA

110 140
30 µS

1 mS

0.5 10 µS

0.5 10 µS

0.8 1.0 1.25 A

1.0 1.2 1.4 A

W
W

mΩ

°C
°C

Ω
Ω

AP1212

Typical Performance Characteristics

On-Resistance vs. Supply Voltage

120
116
112
108
104
100

96

ON-RESISTANCE(ms)

92
88

2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE

Turn-On Rise Time vs. Supply Voltage

1.4

1.2

S)

1.0

m

(

0.8

0.6

RISE TIME

0.4

0.2

0.0

2.5 3.0 3.5 4.0 4.5 5.0

O

C

85

SUPPLY VOLTAGE (V)

On-Current vs. Supply Voltage

220
200
180
160
140
120
100

80

CURRENT (≤gA)

60
40
20

0

2.5 3.0 3.5 4.0 4.5 5.0 5.5

-40OC

SUPPLY VOLTAGE (V)

25OC

25

O

C

RL=10ohm

T=25℃

(V)

O

-40

C

RL=10ohm

CL=47 uF

85OC

5.5

DUAL USB HIGH-SIDE POWER SWITCH

On-Resistance vs. Temperature

160
150
140
130
120
110
100

90

ON-RESISTANCE (ms)

80
70

60

-

40-20

=5V

VSUPPLY

2

0

0

TEMPERATURE (

0

4

V

SUPPLY

RL=10ohm

0

6

O

)

C

=3.3V

8010

0

Turn-On Rise Time vs. Temperature

1.4

1.2

)

mS

1.0

(

0.8

0.6

RISE TIME

0.4

0.2

0.0

-40 -20 0 20 40 60 80 100

SUPPLY

V

=5V

V

SUPPLY=3.3V

TEMPERATURE

O

(

C)

RL=10ohm
CL=47uF

On-Current vs. Temperature

200
180
160
140
120
100

80
60

CURRENT (≤gA)

40
20

0

-40-200 20406080100

V

=5V

SUPPLY

=3.3V

V

SUPPLY

TEMPERATURE (OC)

AP1212 Rev. 2 5 of 12 FEBRUARY 2007

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AP1212

DUAL USB HIGH-SIDE POWER SWITCH

Typical Performance Characteristics (Continued)

Off-Current vs. Supply Voltage

350
300
250
200
150
100

CURRENT (nA)

50

0

-50

2.5 3.0 3.5 4.0 4.5 5.0 5.5

85OC

SUPPLY VOLTAGE (V)

Enable Threshold vs. Supply Voltage

2.0

25OC

-40OC

350
300
250
200
150
100

CURRENT (nA)

-50

2.0

Off-Current vs. Temperature

50

0

-40-200 20406080100

Enable Threshold vs. Temperature

V

=5V

SUPPLY

TEMPERATURE (OC)

V

SUPPLY

=3.3V

1.8

1.6

VEN RISING

1.4

1.2

ENABLE THRESHOLD (V)

1.0

2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)

Short-Circuit Current-Limit vs. Supply Voltage

1.6

1.4

1.2

1.0

0.8

0.6

0.4

CURRENT-LIMIT (A)

0.2

0.0

2.5 3.0 3.5 4.0 4.5 5.0 5.5

-40OC

SUPPLY VOLTAGE (V)

VEN FALLING

T=25OC

25OC

85OC

1.8

VEN RISING

1.6

1.4

1.2

ENABLE THRESHOLD (V)

1.0

-40 -20 0 20 40 60 80 100

VEN FALLING

TEMPERATURE (OC)

VIN=5V

Short-Circuit Current-Limit vs. Temperature

1.6

1.4

1.2

1.0

0.8

0.6

0.4

CURRENT-LIMIT (A)

0.2

0.0

-40-200 20406080100
TEMPERATURE (OC)

V

=5V

SUPPLY

V

SUPPLY

=3.3V

AP1212 Rev. 2 6 of 12 FEBRUARY 2007

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AP1212

DUAL USB HIGH-SIDE POWER SWITCH

Typical Performance Characteristics (Continued)

Current-Limit Threshold vs. Supply Voltage

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

CURRENT-LIMIT THRESHOLD (A)

0.0

2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)

UVLO Threshold vs. Temperature

3.0

2.5

2.0

-40OC
25OC

85OC

VIN RISING

VIN FALLING

Current-Limit Threshold vs. Temperature

1.6

1.4

1.2

1.0

0.8

0.6

0.4

CURRENT-LIMIT (A)

0.2

0.0

-40-200 20406080100

V

SUPPLY

V

=3.3V

SUPPLY

TEMPERATURE (OC)

=5V

1.5

1.0

UVLO THRESHOLD (V)

0.5

0.0

-40-200 20406080100
TEMPERATURE (OC)

AP1212 Rev. 2 7 of 12 FEBRUARY 2007

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A

AP1212

Functional Characteristics

Turn-On/Turn-Off (AP1212H)

VEN

V

FLG

V

OUT

I

OUT

Turn-Off (AP1212H) Enabled Into Short (AP1212H)

Inrush Current

TIME (10mS/div.)

140 m

VIN=5V
CL=47µF
R

=35Ω

L

DUAL USB HIGH-SIDE POWER SWITCH

Turn-On (AP1212H)

Output Turn-On
Rise Time

Inrush Current

TIME (200µS/div.)

VIN=5V
CL=47µF
R

=35Ω

L

140 mA

VEN

VIN=5V

V

FLG

V

I

OUT

OUT

140 mA

CL=47µF
R

=35Ω

L

V

FLG

Short-Circuit Current

TIME (2mS/div.) TIME (500µS/div.)

Current-Limit Response (AP1212H) Current-Limit Response (AP1212H)

VEN

V

OUT

Current-Limit
Threshold

Thermal Shutdown

Short-Circuit Current

VIN=5V
C

=47µF

L

Hysteresis (10OC)

VEN

V

FLG

V

OUT

Current-Limit
Threshold

Short-Circuit Current

TIME (50mS/div.) TIME (20µS/div.)

V

=5V

IN

VIN=5V
C

=47µF

L

AP1212 Rev. 2 8 of 12 FEBRUARY 2007

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AP1212

Typical Application Circuit

Power

Supply

3.3V 5V

0.1uF

USB

Control

7

2
1
3
4

IN

FLG1
EN1
FLG2

EN2

AP1212

GND
6

DUAL USB HIGH-SIDE POWER SWITCH

Downstream

USB Ports

D+
D­VBUS

GND

ferrite bead

D+
D­VBUS

GND

ferrite bead

OUT1

OUT2

8

0.1uF

5

ferrite bead

33uF

ferrite bead
33uF0.1uF

Test Circuit

OFF

OFF

ON

ON

EN1
FLG1

FLG2
EN2

10K R1

10K R2

AP1212

OUT1

IN

GND

OUT2

V

CC

+5V

R3>=10

C1

0.1uF

R4>=10

AP1212 Rev. 2 9 of 12 FEBRUARY 2007

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AP1212

Function Description

Error Flag

An open-drained output of N-channel MOSFET, the FLG
output is pulled low to signal the following fault conditions: input
undervoltage, output current limit, and thermal shutdown.

Current Limit

The current limit threshold is preset internally. It protects
the output MOSFET switches from damage due to undesirable
short circuit conditions or excess inrush current often
encountered during hot plug-in. The low limit of the current limit
threshold of the AP1212 allows a minimum current of 0.5A
through the MOSFET switches. A current limit condition will
signal the error flag.

Thermal Shutdown

When the chip temperature exceeds 140ºC for any reason
other than over current fault of either one of the two MOSFET
switches, the thermal shutdown function turns off both MOSFET
switches and signals the error flag. A hysteresis of 10ºC prevents
the MOSFETs from turning back on until the chip temperature
drops to below 130ºC.

DUAL USB HIGH-SIDE POWER SWITCH

Supply Filtering

A 0.1µF to 1µF bypass capacitor from IN to GND, located
near the device, is strongly recommended to control supply
transients. Without a bypass capacitor, an output short may
cause sufficient ringing on the input (from supply lead inductance)
to damage internal control circuitry.

Transient Droop Requirements

USB applications support dynamic attachment (hot plug-in)
of peripherals. A current surge is caused by the input capacitance
of downstream device. Ferrite beads are recommended in series
with all power and ground connector pins. Ferrite beads reduce
EMI and limit the inrush current during hot-attachment by filtering
high-frequency signals.

Short Circuit Transient

Bulk capacitance provides the short-term transient current
needed during a hot-attachment event. With a 33µF, 16V
tantalum or 100µF, 10V electrolytic capacitor mounted close to
downstream connector per port should provide transient drop
protection.

Printed Circuit Layout

The power circuitry of USB printed circuit boards requires
a customized layout to maximize thermal dissipation and to
minimize voltage drop and EMI.

AP1212 Rev. 2 10 of 12 FEBRUARY 2007

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AP1212

Marking Information

SOP-8L

Logo

Part Number

Device Package Identification Code

AP1212XS SOP-8L AP1212

(Top View)

8

AP1212 X

DUAL USB HIGH-SIDE POWER SWITCH

5

Enable Type

H : Active High

L : Active Low
L : Lead Free

G : Green

YY WW XX

ID code: internal

Xth week: 01~52

Year: "01" =2001

1 4

SOP-8L

"02" =2002

~

Package Information

Package Type: SOP-8L

7°~9°

1.27typ

4.80/5.30

0.3/0.5

5.79/6.20

3.70/4.10

1.30/1.50

1.75max.

0.08/0.25

0.20typ

Detail "A"

0.35max.
45°

3.70/4.10

0.38/1.27

0.254

7°~9°

Gauge Plane
Seating Plane

Detail "A"

AP1212 Rev. 2 11 of 12 FEBRUARY 2007

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AP1212

DUAL USB HIGH-SIDE POWER SWITCH

IMPORTANT NOTICE

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.

LIFE SUPPORT

Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.

AP1212 Rev. 2 12 of 12 FEBRUARY 2007

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