BQ4050 Datasheet, PDF (3/53 Pages) Texas Instruments – CEDV Gas Gauge and Protection Solution

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5 Pin Configuration and Functions
bq4050
SLUSC67A – MARCH 2016 – REVISED MARCH 2016
RSM Package
32-Pin VQFN with Exposed Thermal Pad
Top View
PBI
1
VC4
2
VC3
3
VC2
4
VC1
5
SRN
6
NC
7
SRP
8
Thermal
Pad
24
PTCEN
23
PTC
22
LEDCNTLC
21
LEDCNTLB
20
LEDCNTLA
19
SMBC
18
SMBD
17
DISP
NAME
PBI
VC4
VC3
VC2
VC1
SRN
NC
SRP
VSS
TS1
TS2
TS3
TS4
NC
BTP_INT
PRES or
SHUTDN
PIN
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TYPE
P ⁽¹⁾
IA
IA
IA
IA
I
—
I
P
IA
IA
IA
IA
—
O
I
Pin Functions
DESCRIPTION
Power supply backup input pin
Sense voltage input pin for the most positive cell, and balance current input for the most
positive cell
Sense voltage input pin for the second most positive cell, balance current input for the
second most positive cell, and return balance current for the most positive cell
Sense voltage input pin for the third most positive cell, balance current input for the third
most positive cell, and return balance current for the second most positive cell
Sense voltage input pin for the least positive cell, balance current input for the least
positive cell, and return balance current for the 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 V_SS.
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. Connect to V_SS.
Battery Trip Point (BTP) interrupt output
Host system present input for removable battery pack or emergency system shutdown
input for embedded packs
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/OD = Digital Input/Output
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