2
AN1260.1
January 26, 2010
Quick Setup Guide
(Refer to Figure 1)
DO NOT APPLY POWER UNTIL STEP 6
For Cradle Input:
Step 1:
Connect a 5V supply PS1 to CRDL input
(J1, upper +) with the current limit set at
1.3A
Step 2:
Connect a 3.7V supply PS3 to BAT output
(J3, upper +) with the current limit set at
1.3A
Step 3:
Connect a current meter to JP6, as shown
in Figure 1
Step 4:
Connect the DC electronic load of 1.2A to
BAT (J3, upper +)
Step 5:
Insert a jumper shunt on JP1, all other
jumper shunts are not installed
Step 6:
Turn on Power Supplies and DC electronic
load, adjust the power supply PS3 such
that the voltmeter V2 reads 3.7V
Step 7:
Both the red and the green LEDs should
be on, indicating power on and charging
condition
Step 8:
The current meter I2 should read about
0.28A as the charging current
Step 9:
Insert a jumper shunt on JP7 and the
current meter I2 should read about
0.575A charging current
Step 10: Insert a jumper shunt on both JP7 and
JP8, the current meter I2 should read
about 1.04A charging current
Step 11: Reduce the voltage at PS3 to 2.0V for
trickle charge currents. Repeat Steps 8, 9
and 10. The current reading should be
52mA,103mA and 187mA for steps 8, 9
and 10, respectively
Step 12: Slowly reduce the DC electronic load
current until the green LED turns off. The
current meter I2 should read about 47mA
EOC current
Step 13: Insert a jumper shunt on JP5 and repeat
Step 12, the current meter I2 should read
93mA EOC current
For USB Input:
Step 1:
Connect a 5V supply PS2 to USB with the
current limit set at 0.7A
Step 2:
Connect a 3.7V supply PS3 to BAT (J3
upper +) with the current limit set at 0.7A
Step 3:
Connect the DC electronic load of 0.6A to
BAT (upper +)
Step 4:
Connect a current meter to JP6 as shown
in Figure 1
Step 5:
Install a jumper shunt on JP2 and a
jumper shunt on JP4 to the USBON
position, all other jumpers shunts are not
installed
Step 6:
Turn on Power Supplies and DC electronic
load, adjust the power supply PS3 such
that the voltmeter V2 reads 3.7V
Step 7:
Both the red and the green LEDs should
be on, indicating power on and charging
condition
Step 8:
The current meter I2 should read about
0.38A charging current
Step 9:
Reduce the voltage at PS3 to 2.0V for
trickle charge current. Repeat Step 8. The
reading should be around 80mA
Step 10: Slowly reduce the electronic load current
until the green LED turns off, the current
meter I2 should read about 55mA EOC
current
Step 11: Insert a jumper shunt on JP5 and repeat
Step 10. The current meter I2 should read
75mA EOC current
Application Note 1260
