BQ27531-G1 Datasheet, PDF (16/21 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge for Use With the bq2419x Charger Controller

bq27531-G1
SLUSBE7 – MARCH 2013
SCHEMATIC
REFERENCE SCHEMATICS
www.ti.com
Vin
1
GND ²
J1
C5
1.0uF
VCC
PSEL
PG
STAT
BSCL
BSDA
OTG
CE
REGN
R2
R7
80.6k
169
R11
100k
U1
BQ2419xRGE
1 _{VBUS VBUS} 24
2 _PSEL
3 _PG
4 _STAT
PMID ²³
REGN ²²
BTST ²¹
5 _SCL
SW ²⁰
6 _SDA
SW ¹⁹
7 _{INT PGND} 18
8 _{OTG PGND} 17
9 _CE
SYS ¹⁶
10 _ILIM
SYS ¹⁵
11 _{TS 1}
BAT ¹⁴
12 _TS2
BAT ¹³
PwPd
C1 C2
10uF 10uF
REGN
4.7uF C6
C7
47nF
SW
SYS
C13
10uF
C14
1uF
L1
2.2uH
1
2
SYS
C8
10uF
C9
10uF
C10 C11
1uF 0.1uF
J5
System Output
2
1 ^GND
TP13
BAT+
R17
10.0k
R18
10.0k
SDA
4
SCL
3
VSS
2
1
J10
SDA SCL
J P3
OTG
CE
R19
R20
J P4
1MΩ
SYS ^1MΩ
R8
2.21k
SYS
R9
2.21k
SYS
D1 Green
D2 Green
STAT
PG
R23
10.0k
SOC_INT ₂
VSS ₁
J13
VCC
SOC_INT
R21
1.80M
C18
0.033uF
R22
18.2k
TS_GAUGE
R25
1.00k
C15
0.1uF
VCC
C17
1.0uF
SDA
SCL
SYS
U2
BQ27531-G1YFF
E1
D1
B3
A3
E3
D3
C2
C1
REGIN
BAT
VCC
CE
SDA _{SOC_INT}
SCL
BSCL
BI/TOUT
BSDA
TS
SRN
VSS
VSS
SRP
E2
D2
A2
B2
C3
B1
A1
SYS
SOC_INT
BSCL
BSDA
C16
0.1uF
0.1uF
C19
C20
0.1uF
Only needed when the
Gauge is monitoring the
battery NTC.
BAT+
Vin Max: 4.4V
Current max: 4A
TS_GAUGE
0.01
R24
3 ^PACK+
2T
1 ^PACK-
J12
16
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