+

PACK–

CVREF

PACK+

VBAT

CO1

22 µF

CO2

33 µF

L

1 µH

O

VSNS

10 nF

CIN

4.7

µF

CBOOT

BOOT

PGND

CSIN

CSOUT

SW

SDA

U1

bq24153A/8

HOST

PMID

SCL

CD

STAT

STAT

CD

OTG

OTG

SDA

SCL

VBUS

VAUX

10 k

10 k

10 k

10 k

10 k

CSIN

CIN

CSOUT

0.1 µF

0.1 µF

1 µF

1 µF

VBUS

VREF

bq24153A, bq24156A

bq24158, bq24159

www.ti.com

SLUSAB0A

– OCTOBER 2010 – REVISED FEBRUARY 2012

Fully Integrated Switch-Mode One-Cell Li-Ion Charger

With Full USB Compliance and USB-OTG Support

Check for Samples: bq24153A, bq24156A, bq24158, bq24159

1

FEATURES

23

•

Charge Faster than Linear Chargers

•

Synchronous Fixed-Frequency PWM

Controller Operating at 3 MHz With 0% to

•

High-Accuracy Voltage and Current Regulation

99.5% Duty Cycle

– Input Current Regulation Accuracy: ±5%

•

Automatic High Impedance Mode for Low

(100 mA and 500 mA)

Power Consumption

– Charge Voltage Regulation Accuracy:

•

Robust Protection

±0.5% (25°C), ±1% (0°C to 125°C)

– Reverse Leakage Protection Prevents

– Charge Current Regulation Accuracy: ±5%

Battery Drainage

•

Input Voltage Based Dynamic Power

– Thermal Regulation and Protection

Management (VIN DPM)

– Input/Output Overvoltage Protection

•

Bad Adaptor Detection and Rejection

•

Status Output for Charging and Faults

•

Safety Limit Register for Maximum Charge

Voltage and Current Limiting

•

USB Friendly Boot-Up Sequence

•

High-Efficiency Mini-USB/AC Battery Charger

•

Automatic Charging

for Single-Cell Li-Ion and Li-Polymer Battery

•

Power Up System without Battery bq24158/9

Packs

•

Boost Mode Operation for USB OTG:

•

20-V Absolute Maximum Input Voltage Rating

(bq24153A/8 only)

•

9-V Maximum Operating Input

– Input Voltage Range (from Battery): 2.5 V to

Voltage-bq24156A/9

4.5 V

•

6-V Maximum Operating Input

Voltage-bq24153A/8

•

2.1 mm x 2 mm 20-Pin WCSP Package

•

Built-In Input Current Sensing and Limiting

•

Integrated Power FETs for Up To 1.5-A Charge

APPLICATIONS

Rate-bq24156A/9, 1.25A-bq24153A/8

•

Mobile and Smart Phones

•

Programmable Charge Parameters through

•

MP3 Players

™ Compatible Interface (up to 3.4 Mbps):

•

Handheld Devices

– Input Current Limit

Figure 1. Typical Application Circuit

– VIN DPM Threshold

– Fast-Charge/Termination Current

– Charge Regulation Voltage (3.5 V to 4.44 V)

– Low Charge Current Mode Enable/Disable

– Safety Timer with Reset Control

– Termination Enable/Disable

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

NanoFree is a trademark of Texas Instruments.

3

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright

© 2010–2012, Texas Instruments Incorporated

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.