TEMP

PACK+

PACK-

`

BAT

TS

ISET

VSS

VBUS

EN

CHG

1mF

Q1

Q2

VDPM

PG

bq24210

Host

1mF

System

Load

RT1

VTSB

1

7

9

2

3

5

10

8

6

4

bq24210

www.ti.com

SLUSA76A

– DECEMBER 2010 – REVISED MAY 2011

800mA, Single-Input, Single Cell Li-Ion Battery Solar Charger

Check for Samples: bq24210

1

FEATURES

APPLICATIONS

•

Input Voltage Dynamic Power Management

•

Smart Phones

Feature (VBUS_DPM)

•

PDAs

•

Selectable Battery Tracking Mode to Maximize

•

MP3 Players

the Charge Rate from Solar Panel Using DPM

•

Low-Power Handheld Devices

Feature

•

Auxiliary Solar Chargers

•

Load Mode to Support Loads Connected at

VBUS Pin

DESCRIPTION

•

20V Input Rating, with Over-Voltage Protection

The bq24210 is a highly integrated Li-ion linear

(OVP)

charger

targeted

at

space-limited

portable

applications. The high input voltage range with input

•

1% Battery Voltage Regulation Accuracy

over-voltage protection supports low-cost unregulated

•

Up to 800mA Charge Current with 10% Charge

adapters. The input voltage regulation loop with

Current Accuracy

programmable input voltage regulation threshold

•

Thermal Regulation Protection for Output

make it suitable for charging from alternative power

Current Control

sources, such as solar panel or inductive charging

pad.

•

Low Battery Leakage Current

•

BAT Short-Circuit Protection

The IC has a single power output that charges the

battery. A system load can be placed in parallel with

•

NTC Input Monitoring

the battery as long as the average system load does

•

Built-In Safety Timer With Reset Control

not keep the battery from charging fully during the 10

•

Status Indication

– Charging/Power Present

hour safety timer.

•

Available in Small 2mm

× 3mm SON-10

The battery is charged in three phases: conditioning,

Package

constant current and constant voltage. In all charge

phases, an internal control loop monitors the IC

junction temperature and reduces the charge current

if an internal temperature threshold is exceeded.

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.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2010–2011, 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.