3IN

4IN

6VCC

2STAT1

19STAT2

5PG

7

TTC

16CE

10VSS

13NC

OUT 1

OUT 20

PGND17

PGND18

SNS15

BAT 14

ISET18

ISET29

TS12

VTSB11

V

IN

L

OUT

C

IN

C

OUT

R

SNS

0.1W

1.5KW

1.5KW

1.5KW

Charge

Done

Adapter

Present

7.5KW

7.5KW

9.31KW

442KW

RT1

103AT

Battery

Pack

Pack-

Pack+

0.1 F

m

0.1 F

m

0.1 F

m

0.1 F

m

10 F

m

10 H

m

10 F

m

BQ24100

RT2

VTSB

MMBZ18VALT1

D1

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

bq24100, bq24103, bq24103A, bq24104, bq24105

bq24108, bq24109, bq24113, bq24113A, bq24115

SLUS606P – JUNE 2004 – REVISED NOVEMBER 2015

bq241xx Synchronous Switched-Mode, Li-Ion and Li-Polymer Charge-Management

IC With Integrated Power FETs (bqSWITCHER™)

1 Features

2 Applications

1

•

Ideal For Highly Efficient Charger Designs For

•

Handheld Products

Single-, Two-, or Three-Cell Li-Ion and Li-Polymer

•

Portable Media Players

Battery Packs

•

Industrial and Medical Equipment

•

•

Portable Equipment

•

Integrated Synchronous Fixed-Frequency PWM

3 Description

Controller Operating at 1.1 MHz With 0% to 100%

The bqSWITCHER™ series are highly integrated Li-

Duty Cycle

ion and Li-polymer switch-mode charge management

devices targeted at a wide range of portable

•

Integrated Power FETs for Up To 2-A Charge

applications.

The

bqSWITCHER™

series

offers

Rate

integrated synchronous PWM controller and power

•

High-Accuracy Voltage and Current Regulation

FETs, high-accuracy current and voltage regulation,

•

Available in Both Stand-Alone (Built-In Charge

charge preconditioning, charge status, and charge

Management and Control) and System-Controlled

termination, in a small, thermally enhanced VQFN

(Under System Command) Versions

package. The system-controlled version provides

additional inputs for full charge management under

•

Status Outputs for LED or Host Processor

system control.

Interface Indicates Charge-In-Progress, Charge

Completion, Fault, and AC-Adapter Present

The bqSWITCHER™ charges the battery in three

Conditions

phases: conditioning, constant current, and constant

voltage.

Charge

is

terminated

based

on

user-

•

20-V Maximum Voltage Rating on IN and OUT

selectable minimum current level. A programmable

Pins

charge timer provides a safety backup for charge

•

High-Side Battery Current Sensing

termination.

The

bqSWITCHER™

automatically

•

Battery Temperature Monitoring

restarts the charge cycle if the battery voltage falls

below an internal threshold. The bqSWITCHER™

•

Automatic Sleep Mode for Low Power

Consumption

removed.

•

System-Controlled Version Can Be Used in NiMH

and NiCd Applications

Device Information (1)

•

Reverse Leakage Protection Prevents Battery

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Drainage

bq241xx

VQFN (20)

3.50 mm × 4.50 mm

•

Thermal Shutdown and Protection

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

•

Built-In Battery Detection

•

Available in 20-Pin, 3.50 mm × 4.50 mm VQFN

Package

Typical 1-Cell Application

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.