Texas Instruments BQ27421EVM-G1B System-Side Battery Fuel (Gas) Gauge Evaluation Module BQ27421EVM-G1B BQ27421EVM-G1B Datenbogen
Produktcode
BQ27421EVM-G1B
SDA
SCL
VSS
GPOUT
VSS
Pack+
Pack-
BIN
Load+(Host)
Charger-
SDA
SCL
Pack+
BAT
Pack-
Load+
Load-
GND
Optional
Optional
EXT
VSS
VSS
EXT
EXT
EXT
EXT
VDD
VDD
VDD
Charger+
Load-(Host)
BIN
Ext VDD
VDD
GPOUT
Application circuit only needs to include bq27421 and C1
Optional
A1
GPOUT
B1
BIN
C1
VSS
A2
SDA
B2
VSS
C2
SRX
A3
SCL
B3
VDD
C3
BAT
U1
BQ27421YZF
BQ27421YZF
C1
0.47uF
C2
1uF
R3
5.1k
R4
5.1k
1
2
3
4
J10
1
2
3
J5
1
2
J1
TP2
TP5
TP3
TP9
TP4
TP6
TP11
TP12
TP10
TP7
TP1
R1
4.7k
1
2
3
J2
1
2
3
J3
1
2
3
J8
1
2
3
J9
1
2
J4
R2
10 k
10 k
1
2
J6
1
2
J7
TP8
SDA
SCL
SCL
SDA
VDD
VDD
VDD
EXT_VCC
EXT_VCC
VDD
EXT_VCC
EXT_VCC
Circuit Module Physical Layout, Bill of Materials and Schematic
3.2
Bill of Material
Table 2. Bill of Materials
Count
RefDes
Value
Description
Size
Part Number
Mfr
1
C1
0.47uF
Capacitor, Ceramic, 10V, X5R, 10%
0402
1
C2
1uF
Capacitor, Ceramic, 6.3V, X5R, 10%
0402
4
J1, J4, J6,
ED555/2DS
Terminal Block, 2-pin, 6-A, 3.5mm
0.27 x 0.25 inch
ED555/2DS
OST
J7
4
J2, J3, J8,
PEC36SAAN
Header, Male 3-pin, 100mil spacing
0.100 inch x 3
PEC36SAAN
Sullins
J9
1
J5
ED555/3DS
Terminal Block, 3-pin, 6-A, 3.5mm
0.41 x 0.25 inch
ED555/3DS
OST
1
J10
22-05-3041
Header, Friction Lock Ass'y, 4-pin Right Angle
0.400 x 0.500
22-05-3041
Molex
1
R1
14.7k
Resistor, Chip, 1/16-W, 5%
0402
Std
Std
1
R2
10k
Resistor, Chip, 1/16-W, 5%
0402
Std
Std
2
R3, R4
5.1k
Resistor, Chip, 1/16-W, 5%
0402
Std
Std
4
TP1, TP7,
5001
Test Point, Black, Thru Hole Color Keyed
0.100 x 0.100 inch
5001
Keystone
TP9
7
TP2, TP3,
5002
Test Point, White, Thru Hole Color Keyed
0.100 x 0.100 inch
5002
Keystone
TP11, TP12
3
TP4, TP5,
5000
Test Point, Red, Thru Hole Color Keyed
0.100 x 0.100 inch
5000
Keystone
TP6, TP10
1
U1
bq27421YZF-G1x
IC, Battery Monitor and Data Logger
DSBGA
bq27421-G1x
TI
3.3
Schematic
Figure 6. bq27421EVM Schematic
3.4
bq27421 Circuits Module Performance Specification Summary
This section summarizes the performance specifications of the bq27421 circuit module.
7
SLUUA63 – April 2013
bq27421 EVM: Single-Cell Impedance Track Technology
Copyright © 2013, Texas Instruments Incorporated