Texas Instruments bq2404 series, User Manual

Page: 4 / 15

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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