Over Current and Short Circuit

Protection

Program Memory

System Interface

Pch FET Drive

Pre-Charge Control

Protection Configuration, Status

and Control Registers

User Settings Data Flash

Cell Voltage Translation

Standard 15-bit Delta-Sigma

A to D Converter

Integrating Delta -Sigma

A to D Converter

RSNS

Fuse

Drive

FUSE

VC2

VC1

BAT

Power Control , LDO

SMBC

SMBD

bq28400

I/O

VSS

PACK –

PACK +

CB_EN

bq28400

SLUSA61A – OCTOBER 2010 – REVISED DECEMBER 2010

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

BLOCK DIAGRAM and TYPICAL IMPLEMENTATION

2

Copyright © 2010, Texas Instruments Incorporated

Product Folder Link(s): bq28400