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| BQ20Z655 Datasheet, PDF (2/23 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE AND PROTECTION ENABLED WITH IMPEDANCE TRACK | |||
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bq20z655
SLUSAH8 â APRIL 2011
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PACKAGE THERMAL DATA
DEVICE
bq20z655
PACKAGE
TSSOP-44
θja
47.6°C/W
TA ⤠25°C
POWER RATING
2101 mW
DERATING FACTOR
TA > 25°C
21.01 mw/°C
TA = 70°C
POWER RATING
1155 mW
TA = 85°
POWER RATING
840 mW
SYSTEM PARTITIONING DIAGRAM
PACK+
DISP
LED Display
SMBD
SMBC
SMB 1.1
Data Flash
Memory
JEITA and
Enhanced
Charging
Algorithm
SHA-1
Authentication
Fuse Blow
Detection & Logic
Oscillator
System Control
Over
Temperature
Protection
Temperature
Measurement
Over & Under
Voltage
Protection
Over Current
Protection
PreCharge FET
& GPOD Drive
N Channel FET
Drive
Voltage
Measurement
Impedance
Track⢠Gas
Gauging
Coulomb
Counter
AFE HW Control
HW Over
Current & Short
Circuit Protection
Power Mode
Control
Watchdog
Cell Voltage
Multiplexer
Cell Balancing
Regulators
RBI
MSRT
RESET
ALERT
VCELL+
VC1
VC2
VC3
VC4
VC5
REG33
REG25
bq20z65-R1
+
VC1
+
VC2
VC3
+
VC4
VDD
OUT
CD
GND
+
bq294xx
PACK-
RSNS
5m⦠- 20m ⦠typ
2
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Product Folder Link(s): bq20z655
Copyright © 2011, Texas Instruments Incorporated
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