BQ20Z80DBT-V102 datasheet(2/24 Pages) TI

Part #	BQ20Z80DBT-V102

Description	SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK-TM TECHNOLOGY FOR USE WITH THE bq29312A

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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SYSTEM PARTITIONING DIAGRAM

LDO, Therm Output Drive & UVLO

Power Management

LDO, TOUT, and Power Mode control

I2C

Impedance Track (TM) + Lifetime Data Logging

SMBus

Pack +

Pack -

Discharge / Charge /

Precharge FETs

Cell and Pack

Voltage

Measurement

Precharge

FET Drive

2-Tier Overcurrent Protection

32-kHz Clock

Generator

bq20z80

768 Bytes of

User Flash

Fuse

1stLevel OV and

UV Protection

Pack Undervoltage

Power Mode

Control

Precharge Control

Delay Counters

Cell Balancing Algorithm and Control

Cell Balancing

Drive

System Interface

System Watchdog

Voltage Level Translator

System Interface

32 kHz

Power Mode Control

Fail-Safe Protection

T1

1st Level OC

Protection

Temperature Measurement

<1% Error

TINT

Supply V oltage

bq29312A

PCH FET Drive

RAM Registers

SBS v1.1 Data

bq29312 RAM/Comms Validation

bq294xx

XAlert

Sleep

Sense Resistor

(5 m - 20 mW typ)

PF Input

1

2

7

6

5

4

3

38

37

36

35

34

33

32

VIN

TS1

TS2

PU

PRES

SCLK

VSSD

NC

CLKOUT

XCK1 / VSSA

XCK2 / ROSC

FILT

SAFE

VDDD

VDDA

RBI

SDATA

VSSD

SAFE

SR2

SR1

VSSA

8

9

10

11

12

31

30

29

28

27

13

14

19

18

17

16

15

26

25

24

23

22

21

20

NC

SMBC

SMBD

DISP

PFIN

MRST

XALERT

LED1

LED2

LED3

LED4

LED5

VSSD

NC - No internal connection

bq20z80-V102

SLUS681A – NOVEMBER 2005 – REVISED MARCH 2006

TSSOP (DBT)

(TOP VIEW)

2

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BQ20Z80DBT-V102 Datasheet(PDF) 2 Page - Texas Instruments

BQ20Z80DBT-V102 Datasheet(HTML) 2 Page - Texas Instruments

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