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BAT+
BAT
±
J1
1
2
BAT+
BAT
±
P/S+
GND
2
1
J2
PS#2 +
PS#2
±
1N5821
D1
P/S Range:
0 to 4.5 V,
3 A max Current due to 1N5821
CONNECT TO POWER SOURCE
Battery Range:
0 to 4.3 V,
Sink up to 4.5 V/(2.2 /2)=4.0 A max
CONNECT TO CHARGER BAT+ TO BAT
±
R1
R2
2.2, 25 W
2.2, 25 W
1
2
1
2
R3
0.1, 2 W
±
5 W
Metal Strip
Sense Resistor
15FR100E
TBH25P5R6
Test Procedure Summary
www.ti.com
Figure 2. Battery Emulator
4.3
Jumper Setup
JMP1
→
Installed
JMP2
→
Installed
JMP3
→
ISET2 and GND shorted
JMP4
→
Installed
JMP5
→
Installed
4.4
ISET, PRETERM, and TS Setup
4.4.1
TS
•
Use the VM3 to measure the Resistance across GND and TP9
•
Adjust R11 until VM3 reads 10 k
Ω
±500
Ω
4.4.2
ISET
•
Use the VM3 to measure the Resistance across GND and TP2
•
Adjust R2 until VM3 reads 1 k
Ω
±50
Ω
4.4.3
PRETERM
•
Use the VM3 to measure the Resistance across GND and TP4
•
Adjust R4 until VM3 reads 2 k
Ω
±100
Ω
4
1-A Single-Input, Single-Cell Li-Ion Battery Charger
SLUUA77 – January 2013
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