BQ40Z50 Datasheet, PDF (4/30 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq40z50
SLUSBS8 – DECEMBER 2013
PIN NAME
VC3
PIN
NUMBER
3
VC2
4
VC1
5
SRN
6
NC
7
SRP
8
VSS
9
TS1
10
TS2
11
TS3
12
TS4
13
NC
14
BTP_INT
15
PRES or SHUTDN
16
DISP
17
SMBD
18
SMBC
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
www.ti.com
PIN FUNCTIONS (continued)
TYPE ⁽¹⁾
DESCRIPTION
IA
IA
IA
I
—
I
P
IA
IA
IA
IA
—
O
I
—
I/OD
I/OD
—
—
—
IA
IA
O
P
IA
O
—
O
O
P
Sense voltage input terminal for second most positive cell, balance current input for
second most positive cell, and return balance current for most positive cell
Sense voltage input terminal for third most positive cell, balance current input for third
most positive cell, and return balance current for second most positive cell
Sense voltage input terminal for least positive cell, balance current input for least positive
cell, and return balance current for third most positive cell
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. Connect to VSS.
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
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
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
Submit Documentation Feedback
Product Folder Links: bq40z50
Copyright © 2013, Texas Instruments Incorporated