BQ35100 Datasheet, PDF (3/26 Pages) Texas Instruments – Lithium Primary Battery Fuel Gauge

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5 Pin Configuration and Functions
TSSOP (PW) Package
14-Pin
Top View
bq35100
SLUSCM6A – JUNE 2016 – REVISED JULY 2016
VIN
1
ALERT
2
NC
3
BAT
4
GE
5
REGIN
6
REG25
7
14
SDA
13
SCL
12
VEN
11
TS
10
SRN
9
SRP
8
VSS
Not to scale
PIN
NAME
NUMBER
VIN
1
ALERT
2
NC
3
BAT
4
GE
5
REGIN
6
REG25
7
V_SS
8
SRP
9
SRN
10
TS
11
VEN
12
SCL
13
SDA
14
Pin Functions
I/O
DESCRIPTION
AI⁽¹⁾ Optional voltage measurement input
O Active low interrupt open drain output. Requires an external pull-up
— Not used and should be connected to V_SS.
P Voltage measurement input and can be left floating or tied to V_SS if not used.
I Gauge enable. Internal LDO is disconnected from REGIN when driven low.
P Internal integrated LDO input. Decouple with 0.1-µF ceramic capacitor to V_SS.
P 2.5-V output voltage of the internal integrated LDO. Decouple with 1-µF ceramic capacitor V_SS.
P Device ground
I
Analog input pin connected to the internal coulomb-counter peripheral for integrating a small voltage
between SRP and SRN where SRP is nearest the BAT– connection.
I
Analog input pin connected to the internal coulomb-counter peripheral for integrating a small voltage
between SRP and SRN where SRN is nearest the PACK– connection.
I Pack thermistor voltage sense (use 103AT-type thermistor)
O Optional open drain external voltage divider control output
I Slave I²C serial communication clock input. Use with a 10-K pull-up resistor (typical).
I/O Open drain slave I²C serial communication data line. Use with a 10-kΩ pull-up resistor (typical).
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/OD = Digital Input/Output
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