DRV Package

(Top View)

1

2

3

4

5

6

OUT

VDD

V1

V3

V2

VSS

PWR PAD

bq294502, bq294504, bq294512, bq294515

bq294522, bq294524, bq294532, bq294562

bq294572, bq294582, bq294592

www.ti.com

SLUSAJ3C – SEPTEMBER 2011 – REVISED MAY 2012

Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries

Check for

Samples: bq294502, bq294504, bq294512, bq294515, bq294522, bq294524, bq294532, bq294562, bq294572, bq294582, bq294592

1

FEATURES

•

•

2-Series and 3-Series Cell Monitor for

•

Low leakage current per cell input < 100 nA

Secondary Protection

•

Small package footprint

•

Fixed Programmable Delay Timer

–

6-pin SON

•

Fixed OVP Threshold:

–

bq294502 = 4.35 V with 4-s Delay Timer

APPLICATIONS

–

bq294504 = 4.35 V with 6.5-s Delay Timer

•

–

bq294512 = 4.40 V with 4-s Delay Timer

–

Tablets

–

bq294515 = 4.425 V with 4-s Delay Timer

–

Slates

–

bq294522 = 4.45 V with 4-s Delay Timer

–

Power Tools

–

bq294524 = 4.45 V with 6.5-s Delay Timer

–

Notebook Computers

–

bq294532 = 4.50 V with 4-s Delay Timer

–

Portable Equipment and Instrumentation

–

bq294562 = 4.25 V with 4-s Delay Timer

–

bq294572 = 4.00 V with 4-s Delay Timer

–

bq294582 = 4.225 V with 4-s Delay Timer

–

bq294584 = 4.225 V with 6.5-s Delay Timer

–

bq294592 = 4.30 V with 4-s Delay Timer

•

High-Accuracy Overvoltage Protection:

± 10 mV

DESCRIPTION

The bq2945xy family of products is a secondary level voltage monitor and protector for Li-Ion battery pack

systems. Each cell is monitored independently for an overvoltage condition. Based on the configuration, an

output is triggered after a fixed delay if any one of the two or three cells has an overvoltage condition. This output

will be triggered into a high state after an overvoltage condition has satisfied the specified delay timer.

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.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2011–2012, 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.