BQ3055 Datasheet, PDF (3/23 Pages) Texas Instruments – 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq3055
www.ti.com
TYPICAL IMPLEMENTATION
SLUSA91A – OCTOBER 2010 – REVISED JANUARY 2012
220 kΩ
0.1 μF
20 kΩ
1 kΩ
CD
VH
1 kΩ
0.1 μF
0.22 μF
OUT
2^nd
VM
Level
Protector
VDD
VL
0.1 μF
GND
VB
1 kΩ
0.1 μF
1 kΩ
0.1 μF
1 kΩ
0.1 μF
0.1 μF 0.1 μF
300 Ω
1 MΩ
3 MΩ
20 kΩ
BAT
1 μF
VC1
100 Ω
VC2
100 Ω
VC3
100 Ω
VC4
100 Ω
TEST
FUSE Control
Cell Balancing
Cell Voltage Mux/
Translation
Voltage
Measurement
Coulomb
Counting
High Side
N-CH FET Drive
AFE H/W Control
CEDV Gauging
Overvoltage /
Undervoltage
Protection
Overcurrent
Protection
2 kΩ
VSS
SRP
SRN
0.1 μF
100 Ω
0.1 μF
5 mΩ
0.1 μF
100 Ω
3 MΩ
10 kΩ
PACK
SHA-1
Authentication
Charging
Algorithms
Watchdog
System Control
H/W Overcurrent/
Shortcircuit
Protection
Overtemperature
Protection
2.5V LDO
3.3V LDO
Temperature
Measurement
SMBus 1.1
PCHG
RBI
0.1 μF
REG25
1 μF
REG33
1 μF
SMBD
SMBC
PRES
100 Ω
5.6 V
200 Ω
200 Ω
1 kΩ
PACK+
0.1 μF
0.1 μF
0.1 nF
100 Ω
100 Ω
0.1 nF
SMBD
SMBC
PRES
PACK -
Figure 1. bq3055 Implementation
Copyright © 2010–2012, Texas Instruments Incorporated
Product Folder Link(s): bq3055
Submit Documentation Feedback
3