DRV Package

(Top View)

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2

3

4

5

6

OUT

VDD

NC

V1

VSS

PWR PAD

VSS

bq294602, bq294604

www.ti.com

SLUSAS0B – DECEMBER 2011 – REVISED MARCH 2012

Single-Cell Protector for Li-Ion Batteries

Check for Samples: bq294602, bq294604

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FEATURES

•

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Single-Cell Monitor for Secondary Protection

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Low leakage current per cell input < 100 nA

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Fixed Programmable Delay Timer

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Small package footprint

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Fixed OVP Threshold

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6-pin SON

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bq294602 = 4.35 V with 4-s Delay Timer

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bq294604 = 4.35 V with 6.5-s Delay Timer

APPLICATIONS

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bq294622 = 4.45 V with 4-s Delay Timer

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bq294624 = 4.45 V with 6.5-s Delay Timer

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Tablets

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bq294682 = 4.225 V with 4-s Delay Timer

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Slates

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bq294684 = 4.225 V with 6.5-s Delay Timer

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Portable Equipment and Instrumentation

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High-Accuracy Overvoltage Protection:

± 10 mV

DESCRIPTION

The bq2946xy family of products is a secondary level voltage monitor and protector for Li-Ion battery pack

systems. The cell is monitored for over voltage condition and triggers an internal counter once the OVP threshold

is exceeded and after a fixed set delay the out is transitioned to a high level. The output is reset (goes low) if the

cell voltage drops below the set threshold minus the hysteresis.

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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.