BQ3060 Datasheet, PDF (4/17 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE and PROTECTION with CEDV

bq3060
SLUS928A – MARCH 2009 – REVISED NOVEMBER 2009
BAT
DSG
VC1
VC2
VC3
VC4
SRP
SRN
TS1
TS2
NC
NC
PIN DETAILS
TSSOP (PW)
(TOP VIEW)
1
24 PACK
2
23 CHG
3
22 ZVCHG
4
21 FUSE
5
20 REG27
6
19 VSS
7
18 RBI
8
17 _PRES
9
16 _SMBC
10
15 _NC
11
14 _SMBD
12
13 _NC
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NAME
BAT
DSG
VC1
PIN
NO.
1
2
3
VC2
4
VC3
5
VC4
6
SRP
7
SRN
8
TS1
9
TS2
10
NC
11
NC
12
NC
13
SMBD
14
NC
15
SMBC
16
PRES
17
RBI
18
VSS
19
REG27
20
FUSE
21
ZVCHG
22
CHG
23
PACK
24
I/O
P
O
IA
IA
IA
IA
IA
IA
I/O,IA
I/O,IA
-
-
-
I/OD
-
I/OD
I/OD
P
P
P
I/OD
O
O
P
Table 2. Pin Functions
DESCRIPTION
Power input from battery
P-CH FET Drive controlling discharge
Sense voltage input terminal and external cell balancing drive output for most positive cell, and
battery stack measurement input.
Sense voltage input terminal and external cell balancing drive output for second most positive
cell.
Sense voltage input terminal and external cell balancing drive output for third most positive cell.
Sense voltage input terminal and external cell balancing drive output for least 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.
Analog input pin connected to the internal coulomb-counter peripheral for integrating a small
voltage between SRP and SRN where SRN is the bottom of the sense resistor.
Thermistor input TS1
Thermistor input TS2
Keep this pin floating
Keep this pin floating
Keep this pin floating
SMBus data pin
Keep this pin floating
SMBus clock pin
Active low input to sense system insertion and typically requires additional ESD protection
RAM backup pin to provide backup potential to the internal DATA RAM if power is momentarily
lost by using a capacitor attached between RBI and VSS
Device ground
Internal power supply 2.7V bias output
Push-pull fuse drive and secondary protector activation input sensing
P-CH precharge FET Drive controlling pre-charge and zero-volt charge
P-CH FET Drive controlling charge
PACK positive terminal and alternative power source
4
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