BQ3055_14 Datasheet, PDF (4/27 Pages) Texas Instruments – 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq3055
SLUSA91B – OCTOBER 2010 – REVISED OCTOBER 2013
Pin-Out Diagram
CHG
1
BAT
2
VC1
3
VC2
4
VC3
5
VC4
6
VSS
7
TS1
8
SRP
9
SRN
10
TS2
11
¯P¯R¯E¯S¯
12
SMBD
13
NC
14
SMBC
15
bq3055
30
DSG
29
PACK
28
PCHG
27
VCC
26
FUSE
25
TEST
24
REG33
23
VSS
22
REG25
21
RBI
20
NC
19
NC
18
NC
17
NC
16
NC
Figure 2. bq3055 Pin-Out Diagram
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PIN NAME
CHG
BAT
VC1
PIN NUMBER
bq3055-DBT
1
2
3
VC2
4
VC3
5
VC4
6
VSS
7
TS1
8
SRP
9
SRN
10
TS2
11
PRES
12
SMBD
13
NC
14
SMBC
15
NC
16
NC
17
NC
18
NC
19
NC
20
RBI
21
TYPE ⁽¹⁾
O
P
I
I
I
I
P
AI
AI
AI
AI
I
I/OD
—
I/OD
—
—
—
—
—
P
PIN FUNCTIONS
DESCRIPTION
Charge N-FET gate drive
Alternate power source
Sense input for positive voltage of top most cell in stack and cell balancing input for top most
cell in stack
Sense input for positive voltage of third lowest cell in stack and cell balancing input for third
lowest cell in stack
Sense input for positive voltage of second lowest cell in stack and cell balancing input for
second lowest cell in stack
Sense input for positive voltage of lowest cell in stack and cell balancing input for lowest cell in
stack
Device ground
Temperature sensor 1 thermistor input
Differential Coulomb Counter input
Differential Coulomb Counter input
Temperature sensor 2 thermistor input
Host system present input
SMBus v1.1 data line
Not internally connected, connect to VSS
SMBus v1.1 clock line
Not internally connected, connect to VSS
Not internally connected, connect to VSS
Not internally connected, connect to VSS
Not internally connected, connect to VSS
Not internally connected, connect to VSS
RAM backup
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/OD = Digital Input/Output
4
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