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| BQ20Z80-V102 Datasheet, PDF (2/24 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK-TM TECHNOLOGY FOR USE WITH THE bq29312A | |||
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bq20z80-V102
SLUS681A â NOVEMBER 2005 â REVISED MARCH 2006
SYSTEM PARTITIONING DIAGRAM
Fuse
Pack +
bq20z80
Precharge Control
Fail-Safe Protection
PF Input
Power Management
LDO, TOUT, and Power Mode control
Supply V oltage
Temperature Measurement
<1% Error
TINT
768 Bytes of
User Flash
32-kHz Clock
Generator
T1
32 kHz
SMBus
Cell Balancing Algorithm and Control
SBS v1.1 Data
System Interface
I2C
bq29312 RAM/Comms Validation
1st Level OC
Protection
1stLevel OV and
UV Protection
XAlert
Sleep
Pack Undervoltage
Power Mode
Control
Cell and Pack
Voltage
Measurement
Impedance Track (TM) + Lifetime Data Logging
Discharge / Charge /
Precharge FETs
bq29312A
PCH FET Drive
Precharge
FET Drive
Cell Balancing
Drive
LDO, Therm Output Drive & UVLO
System Watchdog Delay Counters
System Interface RAM Registers
Power Mode Control
2-Tier Overcurrent Protection
Voltage Level Translator
bq294xx
Pack -
Sense Resistor
(5 m - 20 mW typ)
TSSOP (DBT)
(TOP VIEW)
VIN 1
TS1 2
TS2 3
PU 4
PRES 5
SCLK 6
SAFE 7
VDDD 8
RBI 9
SDATA 10
VSSD 11
SAFE 12
NC 13
NC 14
SMBC 15
SMBD 16
DISP 17
PFIN 18
VSSD 19
38 VSSD
37 NC
36 NC
35 CLKOUT
34 XCK1 / VSSA
33 XCK2 / ROSC
32 FILT
31 VDDA
30 VSSA
29 VSSA
28 SR1
27 SR2
26 MRST
25 XALERT
24 LED1
23 LED2
22 LED3
21 LED4
20 LED5
NC - No internal connection
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