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L9961 Datasheet(PDF) 3 Page - STMicroelectronics

Part # L9961
Description  Battery management system solution
PDF  65 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9961 Datasheet(HTML) 3 Page - STMicroelectronics

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1
Pin description and block diagram
1.1
Device pinout
Table 1. Device pinout
Pin #
Pin name
Pin function
Pin type
Internal PU/PD
Active
1
C0
Cell 1 negative terminal
Analog in
2
ISENSEP
Current sense ADC positive input
terminal
Analog in
3
ISENSEM
Current sense ADC negative
input terminal
Analog in
4
GND
Device ground
Power in
5
SCL
I2C clock line
Digital input
Low
6
SDA
I2C data line
Digital input/
open-drain
Low
7
RDY
Ready interrupt output
Push/pull
8
VREG
3.3 V LDO output
Power out
9
NTC
NTC sensing input
Analog in
10
OD
Open-drain switch for NTC
connection to GND
Open-drain
Low
11
FAULTN_SAFE
Critical fault output
Open-drain
Low
12
FAULTN
Fault output / external CHG/
DCHG shutdown trigger
Digital input/
open-drain
Low
13
TM_ENTER
Reserved for debug. Connect to
GND.
PD
14
WAKEUP
Wakeup from STANDBY input
Digital I/O
PD
High
15
NSHIP
Wakeup from SHIPMENT - DEEP
SLEEP input
Analog in
High
16
FUSE
Fuse pre-driver output / external
fuse activation trigger
Analog out/digital in
PD
High
17
DCHG
Discharge switch gate
Analog out
18
VSD
Discharge switch source
Analog out
19
VSC
Charge switch source
Analog out
20
CHG
Charge switch gate
Analog out
21
VCP1M
Charge pump flying capacitor
input
Analog
22
VCP1P
Charge pump flying capacitor
input
Analog
23
VCP2M
Charge pump flying capacitor
input
Analog
24
VCP2P
Charge pump flying capacitor
input
Analog
25
VCP
Charge pump output
Power out
L9961
Pin description and block diagram
DS14012 - Rev 3
page 3/65



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