MAXIM MAX14578E, MAX14578AE User Manual

19-5821; Rev 1; 2/12

EVALUATION KIT

AVAILABLE

USB Battery Charger Detectors

General Description

The MAX14578E/MAX14578AE are USB charger detectors compliant with USB Battery Charging Revision 1.1. The USB charger-detection circuitry detects USB standard downstream ports (SDPs), USB charging downstream ports (CDPs), or dedicated charger ports (DCPs), and controls an external lithium-ion (Li+) battery charger.

The devices implement USB Battery Charging Revision

1.1-compliant detection logic including data contact detection, D+/D- short detection, charging downstream port identification, and optional USB dead-battery charging support. Dead-battery charging support features a 45-minute (max) charge timer and weak battery voltage monitor controlled by I2C communication (MAX14578E only.) The MAX14578AE features an enable (EN) input and an LDO output.

In addition, the internal USB switch is compliant to Hi-Speed USB, full-speed USB, and low-speed USB signals. The devices feature low on-resistance, low on-resistance flatness, and very low capacitance. The devices also feature high-ESD protection up to Q15kV Human Body Model on the CD+ and CD- pins.

In addition, the MAX14578E/MAX14578AE feature Apple and Sony charger detection that allows identification of resistor-divider networks on D+/D-.

The MAX14578E/MAX14578AE are available in both a 12-bump, 0.4mm pitch, 1.3mm x 1.68mm WLP package and 16-pin TQFN package, and operate over the -40NC to +85NC extended temperature range.

Features

S Compliant to USB Battery Charging Revision 1.1

S Data Contact Detection for Foolproof Connector

Insertion Detection

S USB Dead-Battery Charging Support

S Charging Downstream Detection

S Apple/Sony Charger Detection

S Dedicated Charger Detection

S China YD/T1591-Compliant Charger Detection

S Internal Switches Isolate the USB Transceiver

During the Charger Detection Process

S V

S Device Status Change Interrupt

S Low Supply Current

S High-ESD Protection on CD+ and CD-

Connection Capable of 28V

BUS

±15kV Human Body Model ±8kV IEC 61000-4-2 Contact Discharge

Applications

DSC and Camcorder

Media Players

Cell Phones

e-Book Readers

Mobile Internet Devices (MIDs)

MAX14578E/MAX14578AE

Ordering Information/Selector Guide

PART I2C

MAX14578EEWC+T Yes No No

MAX14578EETE+T Yes No No MAX14578AEEWC+T No Yes Yes MAX14578AEETE+T No Yes Yes

+Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed Pad.

T = Tape and reel.

_______________________________________________________________ Maxim Integrated Products 1

EN

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

LDO TEMP RANGE PIN-PACKAGE TOP MARK

-40NC to +85NC

12 WLP +ABW

16 TQFN-EP* AJA

12 WLP +ABX

16 TQFN-EP* AJB

USB Battery Charger Detectors

ABSOLUTE MAXIMUM RATINGS

(All voltages referenced to GND.)

BAT, INT, SDA, SCL, CE0, CE1, CE2, EN .......... -0.3V to +6.0V

LOUT ........................................... -0.3V to (VB + 0.3V, 6V) (min)

VB ..........................................................................-0.3V to +30V

Switch Disabled or CP_ENA = 1 (Note 1)

CD+, CD- ........................................ -2.1V to (V

TD+, TD- ......................................... -0.3V to (V

Switch Enabled or CP_ENA = 0 (Note 2)

CD+, CD-, TD+, TD- .......................-0.3V to (V

SWPOS SWPOS

VCCINT

+ 0.3V) + 0.3V)

+ 0.3V)

Continuous Current into LOUT ..................................... ±150mA

Continuous Current into Any Other Terminal .................. ±50mA

Continuous Power Dissipation (TA = +70NC)

WLP (derate 13.7mW/NC above +70NC) ................. 1096mW

TQFN (derate 20.8mW/NC above +70NC)..................1667mW

Operating Temperature Range ........................ -40NC to +85NC

Junction Temperature .................................................. +150NC

Storage Temperature Range ......................... -65NC to +150NC

Soldering Temperature (reflow) ......................................+260NC

Note 1: V Note 2: V

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

SWPOS VCCINT

= (V

or 3.3V) (min)

VCCINT

[(VB or 4.2V) (min)]) (max)

BAT,

PACKAGE THERMAL CHARACTERISTICS (Note 3)

WLP

Junction-to-Ambient Thermal Resistance (BJA) ..........73°C/W

Note 3: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

TQFN

Junction-to-Ambient Thermal Resistance (BJA) ..........48°C/W

Junction-to-Case Thermal Resistance (BJC) .............. 10°C/W

MAX14578E/MAX14578AE

ELECTRICAL CHARACTERISTICS

(V

= +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at V

BAT

VB = +5.0V, TA = +25NC.) (Note 4)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS

Supply Voltage Range

Internal Positive Switch Regulator

Internal Negative Switch Regulator

V

UVLO V

BAT

V

UVLO V

BUS

V

BAT

V

B

V

SWPOS

V

SWNEG

BATUVLO

BUSUVLO

2.8 5.5

3.5 28

3.25 3.4 3.6 V

-2.06 -1.90 -1.76 V

V

= 4.2V, VB = 0V 0.90 1.65 2.45 V

BAT

V

= 0V, VB = 5.5V 1.0 1.33 3.30 V

BAT

= +3.6V,

V

2 ______________________________________________________________________________________

USB Battery Charger Detectors

ELECTRICAL CHARACTERISTICS (continued)

(V

= +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at V

BAT

VB = +5.0V, TA = +25NC.) (Note 4)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

= +3.6V,

BAT

VB = 0V, CP_ENA = 0, USBSWC = 0

MAX14578E

BAT Supply Current I

BAT

MAX14578AE

MAX14578E

VB Supply Current I

VB

MAX14578AE

LOUT (LDO OUT) (MAX14578AE ONLY)

LOUT Current Limit I

LOUT Voltage V

LOUT Debounce Time t

LOUT

LOUT_DEB

I

= 10mA, VB = 5.0V 4.87 4.94

LOUT

I

= 0mA, VB = 6.0V 4.0 5.3 5.5

LOUT

VB = 5.0V to V LOUT Turn-On Time 100 Themal Shutdown +141 Themal Shutdown Hysteresis 20

CHARGER DETECTION

V V V I

DP_SRC

CD+ and CD- Sink Current

RCD Resistance R TD+ Pulldown Resistor R TD- Pulldown Resistor R Charger Detection Weak Sink I

Voltage V

DP_SRC

DAT_REF

LGC

Voltage V

Current I

DP_SRC

DAT_REF

LGC

DP_SRC

I

CD+_SINK

I

CD-_SINK

CD

TD+_DWN

TD-_DWN

WEAK

V

= +4.2V,

BAT

VB = 0V, CP_ENA = 1, USBSWC = 1, V

SDA

V

BAT

VB < V

= V

= +3.6V,

SCL

VBRAW

= 1.8V

, VEN =

34.5 59

+3.6V

V

= +4.2V,

BAT

VB = 0V, VEN = 0V

1.3 30

Supply current increase when VEN = 1.6V, V

= +4.2V

BAT

1.3 3.5

VB = +5.5V, CP_ENA = 0, USBSWC = 0

VB = +5.5V, VEN = 0V

190 2.95

VB = +5.5V, VEN = +5.5V

= 4.5V 20 ms

LOUT

0.5 0.7 V

0.25 0.4 V

0.8 2.0 V

6.6 11

50 150

200 330 500

15 20 25

14.25 24.8

= +3.6V,

BAT

1 2.5

FA

1 2.5

87 140

FA

75 125

95 mA

V

Fs NC NC

FA

kI kI kI

0.18

FA

MAX14578E/MAX14578AE

_______________________________________________________________________________________ 3

USB Battery Charger Detectors

ELECTRICAL CHARACTERISTICS (continued)

(V

= +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at V

BAT

VB = +5.0V, TA = +25NC.) (Note 4)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VBUS25 Ratio VBUS25

VBUS47 Ratio VBUS47

VBUS60 Ratio VBUS60 57.5 60.3 63.5 % DCD M Time t DCD C Time t

MDEB

CDEB

DCD Timer 2 s

Charger-Detect Source Time t

Charger-Detect-Type Detection Time

Charger-Detect Delay Time t

VB Attach to CE1 and CE2 Output Time

DP_SRC_ON

t

DP_RES_ON

DP_SRC_HICRNT

t

VBSW

MAX14578E/MAX14578AE

VB Raw-Detect Threshold V VB-Detect Threshold V

VB-Detect Threshold Hysteresis

USB ANALOG SWITCHES (CD-, CD+)

Analog-Signal Range V

On- Resistance R

On -Resistance Match Between Channels

On -Resistance Flatness R

Off-Leakage Current I

On-Leakage Current I

DIGITAL SIGNALS (INT, SCL, SDA, EN, CE0, CE1, CE2)

Input Logic-High V Input Logic-Low V Input Leakage Current I Open-Drain Low V

VBRAW

VBDET

V

VBDET_HYS

DN2, VDP2

ONUSB

DR

ONUSB

FLATUSB

LUSB(OFF)

LUSB(ON)

IH

IL

INLEAK

ODOL

Reference ratio for special charger as a percentage of V

voltage, VB = 5V

BUS

Reference ratio for special charger as a percentage of V

voltage, VB = 5V

BUS

24 26 29 %

44 47 50 %

All comparators 20 30 40 ms All comparators 5 ms

DCHK = 0 40 DCHK = 1 625

120 ms

40 80 ms

From VB > V (DCHK = 0) to CE1 and/or CE2 change

From VB > V (DCHK = 1) to CE1 and/or CE2 change

or CHG_TYP_M = 1

VBDET

or CHG_TYP_M = 1

VBDET

520

1450

1.7 2.6 3.5 V

3.2 3.5 3.3 V

38 50 mV

CP_ENA = 0 (MAX14578E) 0 V CP_ENA = 1 V

V

= +3.0V, I

BAT

V

, V

= 0 to +3.0V

CD-

= +3.0V, I

, V

= +400mV

CD-

= +3.0V, I

, V

= 0 to +3.3V

CD-

= 4.2V, switch open, V

= +0.3V or +2.5V; V

V V

CD+

BAT CD+

BAT CD-

CD+

= I

= 10mA,

CD-

= 10mA,

CD-

= 10mA,

CD-

TD+

CD+

or V

=

TD-

SWNEG

3.3 6

0.06 0.26

=

-360 +360 nA

VCCINT

V

SWPOS

0.5

+2.5V or +0.3V

V

= 4.2V, switch closed, V

BAT

V

= +0.3V or +2.5V

CD-

CD+

or

-360 +360 nA

1.4 V

0.4 V

-1 +1

I

= 1mA 0.4 V

SINK

= +3.6V,

BAT

ms

V

I

FA

4 ______________________________________________________________________________________

USB Battery Charger Detectors

ELECTRICAL CHARACTERISTICS (continued)

(V

= +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at V

BAT

VB = +5.0V, TA = +25NC.) (Note 4)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Logic-High V

Output Logic-Low V

DYNAMIC (Note 5)

OH

OL

I

SOURCE

I

SINK

= 1mA

= 1mA 0.2 V

VIO -

0.2

= +3.6V,

BAT

MAX14578E/MAX14578AE

V

Charge-Pump Delay Time t

Analog-Switch Turn-On Time t

Analog-Switch Turn-Off Time t

Break-Before-Make Delay Time

Off-Capacitance C

ON

OFF

t

BBM

OFF

CP

CP_ENA from 0 to 1 until switch on 1 ms

MAX14578E, I2C STOP to switch on, RL = 50I

MAX14578E, I2C STOP to switch off, RL = 50I

RL = 50I, TA = +25NC

TD-, TD+, applied voltage is 0.5V

P-P

DC bias = 0V, f = 240MHz; CD-, CD+

> 0

,

0.1 1 ms

2 pF

not connected to TD-, TD+

On-Capacitance C

ON

TD-, TD+, applied voltage is 0.5V DC bias = 0V, f = 240MHz; CD-, CD+

P-P

,

4.5 pF

connected to TD-, TD+; RL = 50I

-3dB Bandwidth BW V Off-Isolation V

ISO

= 0.5V

CD_

P-P

RL = 50I, f = 20kHz, V

CD_

= 0.5V

P-P

1000 MHz

-60 dB

I2C TIMING SPECIFICATIONS

I2C Max Clock f

Bus Free Time Between STOP and START Conditions

I2CCLK

t

BUF

1.3

400 kHz

START Condition Setup Time 0.6

Repeat START Condition Setup Time

START Condition Hold Time t STOP Condition Setup Time t Clock Low Period t Clock High Period t Data Valid to SCL Rise Time t Data Hold Time to SCL Fall t

t

SU:STA

HD:STA

SU:STO

LOW

HIGH

SU:DAT

HD:DAT

90% to 90% 0.6

10% of SDA to 90% of SCL 0.6 90% of SCL to 10% of SDA 0.6 10% to 10% 1.3 90% to 90% 0.6 Write setup time 100 ns Write hold time 0 ns

ESD PROTECTION

CD+, CD-

Human Body Model ±15 IEC 61000-4-2 Contact Discharge ±8

Note 4: All units are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by

design and not production tested.

Note 5: Guaranteed by design; not production tested.

Fs

kV

_______________________________________________________________________________________ 5

USB Battery Charger Detectors

01

Typical Operating Characteristics

(V

= +4.2V, VB = +5.0V, C

BAT

= 1FF, CVB = 1FF, unless otherwise noted.)

BAT

BAT SUPPLY CURRENT

vs. SUPPLY VOLTAGE

2.0

VB = 0V, CP_ENA = 0, USBSWC = 0

= V

V

1.5

1.0

BAT SUPPLY CURRENT (µA)

0.5

0

2.8 4.3

= 0V

SDA

SCL

TA = +85°C

BAT SUPPLY VOLTAGE (V)

TA = +25°C

3.83.3

TA = -40°C

MAX14578E toc01

BAT SUPPLY CURRENT (µA)

BAT SUPPLY CURRENT

vs. SUPPLY VOLTAGE

25

VB = 0V, CP_ENA = 0, USBSWC = 1

MAX14578E/MAX14578AE

20

15

10

BAT SUPPLY CURRENT (µA)

5

TA = +25°C

TA = +85°C

TA = -40°C

MAX14578E toc04

SUPPLY CURRENT (µA) V

BAT SUPPLY CURRENT INCREASE

vs. SUPPLY VOLTAGE

10

VB = 0V, CP_ENA = 0, USBSWC = 0

= V

V

8

6

4

2

0

2.8 4.3

= 1.8V

SDA

SCL

BAT SUPPLY VOLTAGE (V)

TA = +25°C

VB SUPPLY CURRENT

vs. SUPPLY VOLTAGE (MAX14578E)

200

V

= +3.6V, CP_ENA = 0, USBSWC = 0

BAT

150

TA = +85°C

100

B

50

TA = +25°C

TA = +85°C

TA = -40°C

3.83.3

TA = -40°C

50

40

MAX14578E toc02

30

20

BAT SUPPLY CURRENT (µA)

10

0

2.8 4.3

200

MAX14578E toc05

150

100

SUPPLY CURRENT (µA)

B

V

50

BAT SUPPLY CURRENT

vs. SUPPLY VOLTAGE

VB = 0V, CP_ENA = 1, USBSWC = 0

TA = +85°C

TA = +25°C

BAT SUPPLY VOLTAGE (V)

TA = -40°C

3.83.3

VB SUPPLY CURRENT

vs. SUPPLY VOLTAGE (MAX14578AE)

V

= +3.6V, EN = HIGH

BAT

TA = +85°C

TA = +25°C

TA = -40°C

MAX14578E toc03

MAX14578E toc06

0

2.8 4.3 BAT SUPPLY VOLTAGE (V)

3.83.3

LOUT VOLTAGE REGULATION (MAX14578AE)

6.0

I

= 1mA

LOUT

5.5

5.0

4.5

LOUT VOLTAGE (V)

4.0

3.5

3.0

4.0 7.0 VB SUPPLY VOLTAGE (V)

TA = +85°C

TA = +25°C

TA = -40°C

0

4.5 5.5 VB SUPPLY VOLTAGE (V)

5.35.14.94.7

LOUT LOAD REGULATION (MAX14578AE)

6.0

VB = 6V

5.5

MAX14578E toc07

5.0

4.5

LOUT VOLTAGE (V)

4.0

3.5

6.56.05.55.04.5

3.0

TA = +25°C TA = -40°C

LOUT CURRENT (mA)

TA = +85°C

MAX14578E toc08

8642

0

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

DIFFERENTIAL SIGNAL (V)

-0.3

-0.4

-0.5

6 ______________________________________________________________________________________

4.5 5.5 VB SUPPLY VOLTAGE (V)

ANALOG-SWITCH EYE DIAGRAM

0

TIME (x 10-9s)

5.35.14.94.7

MAX14578E toc09

2.01.81.4 1.60.4 0.6 0.8 1.0 1.20.2

USB Battery Charger Detectors

Typical Operating Characteristics (continued)

(V

= +4.2V, VB = +5.0V, C

BAT

= 1FF, CVB = 1FF, unless otherwise noted.)

BAT

MAX14578E/MAX14578AE

CD+/CD- ON-RESISTANCE

VOLTAGE

vs. V

5

= 10mA

I

CD_

4

3

TA = +25°C

2

CD+/CD- ON-RESISTANCE (Ω)

1

0

0 3.0

CD_

V

VOLTAGE (V)

CD_

2.0

1.5

1.0

TA = +85°C

MAX14578E toc10

-20

-40

TA = -40°C

2.52.01.51.00.5

-60

CD+/CD- FREQUENCY RESPONSE (dB)

-80

LOGIC-INPUT THRESHOLD

vs. SUPPLY VOLTAGE

V

IH

CD+/CD- FREQUENCY RESPONSE

0

ON-LOSS

OFF-ISOLATION

0.01 10,000 FREQUENCY (MHz)

1001

CE_ vs. V

USB CHARGING DOWNSTREAM PORT, USB COMPLIANT

(USB_CPL = 1, USBSWC = 0, V

MAX14578E toc13

CD+/CD- LEAKAGE CURRENT

50

40

MAX14578E toc11

30

20

10

CD+/CD- LEAKAGE CURRENT (nA)

0

-40 85

CONNECTION (MAX14578E)

BUS

TD+

MAX14578E toc14

vs. TEMPERATURE

ON-LEAKAGE

OFF-LEAKAGE

TEMPERATURE (°C)

= 3V)

V

B

5V/div

V

CD+

0.5V/div

MAX14578E toc12

603510-15

V

0.5

LOGIC-INPUT THRESHOLD (V)

0

2.8 5.5 BAT SUPPLY VOLTAGE (V)

CE_ vs. V

BUS

IL

CONNECTION (MAX14578E)

APPLE 1A CHARGER, USB COMPLIANT

(USB_CPL = 1, USBSWC = 0, V

20ms/div

5.24.94.64.34.03.73.43.1

= 3V)

TD+

MAX14578E toc15

V

B

5V/div

V

CD+

2V/div

V

CE2

5V/div

V

CE1

5V/div

40ms/div

CE_ vs. V

CONNECTION (MAX14578AE)

BUS

USB CHARGING DOWNSTREAM PORT

(V

= 3V)

TD+

100ms/div

MAX14578E toc16

CE2

5V/div

V

CE1

5V/div

V

B

5V/div

V

CD+

2V/div

V

CE2

5V/div

V

CE1

5V/div

_______________________________________________________________________________________ 7