BQ4050 Datasheet, PDF (4/53 Pages) Texas Instruments – CEDV Gas Gauge and Protection Solution

bq4050
SLUSC67A – MARCH 2016 – REVISED MARCH 2016
www.ti.com
NAME
DISP
SMBD
SMBC
PIN
NUMBER
17
18
19
LEDCNTLA
20
LEDCNTLB
21
LEDCNTLC
22
PTC
23
PTCEN
24
FUSE
25
VCC
26
PACK
27
DSG
28
NC
29
PCHG
30
CHG
31
BAT
32
TYPE
—
I/OD
I/OD
—
—
—
IA
IA
O
P
IA
O
—
O
O
P
Pin Functions (continued)
DESCRIPTION
Display control for LEDs
SMBus data pin
SMBus clock pin
LED display segment that drives the external LEDs depending on the firmware
configuration
LED display segment that drives the external LEDs depending on the firmware
configuration
LED display segment that drives the external LEDs depending on the firmware
configuration
Safety PTC thermistor input pin. To disable, connect PTC and PTCEN to V_SS.
Safety PTC thermistor enable input pin. Connect to BAT. To disable, connect PTC and
PTCEN to V_SS.
Fuse drive output pin
Secondary power supply input
Pack sense input pin
NMOS Discharge FET drive output pin
Not internally connected. Connect to V_SS.
PMOS Precharge FET drive output pin
NMOS Charge FET drive output pin
Primary power supply input pin
4
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