BQ3050 Datasheet, PDF (4/28 Pages) Texas Instruments – 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq3050
SLUSA92A – JANUARY 2011 – REVISED JUNE 2011
Pin-Out Diagram
CHG 1
PCR 2
BAT 3
VC1 4
VC2 5
VC3 6
VC4 7
VSS 8
VSS 9
TS1 10
SRP 11
NC 12
SRN 13
NC 14
TS2 15
P¯¯R¯E¯S¯ 16
SMBD 17
NC 18
SMBC 19
38 DSG
37 PACK
36 GPOD
35 VCC
34 PCHGIN
33 FUSE
32 TEST
31 REG33
30 VSS
29 VSS
28 REG25
27 RBI
26 LED1
25 LED2
24 LED3
23 LED4
22 LED5
21 NC
20
D¯¯IS¯¯P
Figure 2. bq3050 Pin-Out Diagram
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PIN NAME
CHG
PCR
BAT
VC1
PIN NUMBER
bq3050-DBT
1
2
3
4
VC2
5
VC3
6
VC4
7
VSS
8
VSS
9
TS1
10
SRP
11
NC
12
SRN
13
NC
14
TS2
15
PRES
16
SMBD
17
TYPE ⁽¹⁾
PIN FUNCTIONS
DESCRIPTION
O
O
P
I
I
I
I
P
P
AI
AI
—
AI
—
AI
I
I/OD
Charge N-FET gate drive
Internal Pre-Charge FET output
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
Device ground
Temperature sensor 1 thermistor input
Differential Coulomb Counter input
Not internally connected, connect to VSS
Differential Coulomb Counter input
Not internally connected, connect to VSS
Temperature sensor 2 thermistor input
Host system present input
SMBus v1.1 data line
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/OD = Digital Input/Output
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