BQ2961_17 Datasheet, PDF (15/33 Pages) Texas Instruments – Overvoltage Protection for 2-Series, 3-Series, and 4-Series Cell Li-Ion Batteries with Regulated Output Supply

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Feature Description (continued)
bq2961, bq2962
SLUSBU5D – NOVEMBER 2013 – REVISED JANUARY 2017
100 Ÿ
VCELL3
VCELL2
VCELL1
1 NŸ
0.1 µF
1 NŸ
0.1 µF
1 NŸ
0.1 µF
VDD
OUT
V3
REG
bq2960
V2
VSS
V1
REG_EN
PWPD
5 (*)
0.1 µF 0.47 µF
Pack +
Protector FETs
X1 VCC
X2 MFP
VBAT SDA
GND SCL
RTC IC
VCC ^Enable
Supply
* can be removed if Vss will be
connected first during cell connection
REG out is always enabled
Pack ±
100
Ÿ
VCELL3
VCELL2
VCELL1
1 NŸ
0.1 µF
1 NŸ
0.1 µF
1 NŸ
0.1 µF
VDD
V3
V2
bq2960
OUT
REG
VSS
V1
REG_EN
PWPD
5 (*)
0.1 µF 0.47 µF
Pack +
Protector FETs
X1 VCC
X2 MFP
VBAT SDA
GND SCL
RTC IC
VCC ^Enable
supply
* can be removed if Vss will be
connected first during cell connection
REG output is enabled or disabled by MCU
MCU
CTL
Pack ±
Copyright © 2017, Texas Instruments Incorporated
Figure 13. bq2960 Application Schematic
8.4 Device Functional Modes
8.4.1 NORMAL Mode
When all of the cell voltages are below the V_OV threshold AND above V_UVREG threshold, the device operates in
NORMAL mode. The device monitors the differential cell voltages connected across (V1–VSS), (V2–V1),
(V3–V2), and (V4–V3). The OUT pin is inactive in this mode. The regulated output is always enabled for bq2961.
For bq2960, the regulated output is on only if the voltage on the REG_EN pin is above V_IH.
Copyright © 2013–2017, Texas Instruments Incorporated
Product Folder Links: bq2961 bq2962
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