BQ40Z50-R2 Datasheet, PDF (4/51 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq40z50-R2
SLUSCS4 – JUNE 2017
PIN NUMBER
PIN NAME
6
SRN
7
NC
8
SRP
9
VSS
10
TS1
11
TS2
12
TS3
13
TS4
14
NC
15
BTP_INT
16
PRES or SHUTDN
17
DISP
18
SMBD
19
SMBC
20
LEDCNTLA
21
LEDCNTLB
22
LEDCNTLC
23
PTC
24
PTCEN
25
FUSE
26
VCC
27
PACK
28
DSG
29
NC
30
PCHG
31
CHG
32
BAT
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Pin Functions (continued)
TYPE
I
—
I
P
IA
IA
IA
IA
—
O
I
—
I/OD
I/OD
—
—
—
IA
IA
O
P
IA
O
—
O
O
P
DESCRIPTION
Analog input pin connected to the internal coulomb counter peripheral for
integrating a small voltage between SRP and SRN where SRP is the top of
the sense resistor.
Not internally connected
Analog input pin connected to the internal coulomb counter peripheral for
integrating a small voltage between SRP and SRN where SRP is the top of
the sense resistor.
Device ground
Temperature sensor 1 thermistor input pin
Temperature sensor 2 thermistor input pin
Temperature sensor 3 thermistor input pin
Temperature sensor 4 thermistor input pin
Not internally connected
Battery Trip Point (BTP) interrupt output
Host system present input for removable battery pack or emergency system
shutdown input for embedded pack. A pullup is not required for this pin.
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 both PTC and PTCEN
to VSS.
Safety PTC thermistor enable input pin. Connect to BAT. To disable, connect
both PTC and PTCEN to VSS.
Fuse drive output pin. Connect to VSS if not used.
Secondary power supply input
Pack sense input pin
NMOS Discharge FET drive output pin
Not internally connected
PMOS Precharge FET drive output pin
NMOS Charge FET drive output pin
Primary power supply input pin
4
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