1

FEATURES

APPLICATIONS

DESCRIPTION

1 mF

C VREF

LO 1.0 H

m

10nF

C BOOT

+

PACK -

PACK +

1mF

C AUXPWR

SCL

SDA

CSOUT

CSIN

PGND

SW

I2CBUS

bq24150/1

10kW

VAUX

HOST

SCL

SDA

STAT

VREF

STAT

PMID

VBUS

C IN

VBUS

C IN

1 F

m

4.7 F

m

BOOT

OTG

U1

AUXPWR

OTG

C O

1 0mF

R SNS

0.1 mF

10kW

10kW

10kW

bq24150

bq24151

Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and

USB-OTG Support

2

• Charge Faster than Linear Chargers

–

Output Voltage for VBUS: 5.05 V

• High-Accuracy Voltage and Current Regulation

• 1.976 x 1.924mm 20-Pin WCSP Package

–

Input Current Regulation Accuracy: ±5%

(100 mA and 500 mA)

• Mobile and Smart Phones

–

Charge Voltage Regulation Accuracy:

• MP3 Players

±0.5% (25°C), ±1% (0°C to 125°C)

• Handheld Devices

–

Charge Current Regulation Accuracy: ±5%

• High-Efficiency Mini-USB/AC Battery Charger

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

The bq24150/1 is a compact, flexible, high-efficiency,

Packs

USB-friendly

switch-mode

charge

management

• 20-V Absolute Maximum Input Voltage Rating

device for single-cell Li-ion and Li-polymer batteries

• 6-V Maximum Operating Input Voltage

used in a wide range of portable applications. The

• Built-In Input Current Sensing and Limiting

charge parameters can be programmed through an

interface.

The

bq24150/1

integrates

a

• Integrated Power FETs for Up To 1.25-A

synchronous PWM controller, power MOSFETs, input

Charge Rate

current sensing, high-accuracy current and voltage

• Programmable Charge Parameters through

regulation, and charge termination, into a small

WCSP package.

–

Input Current

The bq24150/1 charges the battery in three phases:

–

Fast-Charge/Termination Current

conditioning, constant current and constant voltage.

The input current is automatically limited to the value

–

Charge Voltage (3.5 V to 4.44 V)

set by the host. Charge is terminated based on

–

Safety Timer

user-selectable minimum current level. A safety timer

–

Termination Enable

interface.

During

normal

operation,

bq24150/1

• Synchronous Fixed-Frequency PWM

automatically restarts the charge cycle if the battery

Controller Operating at 3 MHz With 0% to

voltage

falls

below

an

internal

threshold

and

99.5% Duty Cycle

automatically enters sleep mode or high impedance

• Automatic High Impedance Mode for Low

mode when the input supply is removed. The charge

Power Consumption

• Safety Timer with Reset Control

Typical Application Circuit

• Reverse Leakage Protection Prevents Battery

Drainage

• Thermal Regulation and Protection

• Input/Output Overvoltage Protection

• Status Output for Charging and Faults

• USB Friendly Boot-Up Sequence

• Automatic Charging – bq24150

• Automatic High Impedance Mode – bq24151

• Boost Mode Operation for USB OTG:

–

Input Voltage Range (from Battery): 2.5 V to

4.5 V

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

I2C is a trademark of Philips Electronics.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.