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Application Note 1170
Quick Setup Guide (Refer to Figure 1)
DO NOT APPLY POWER UNTIL STEP 5
For Cradle Input:
For USB Input:
Step 1:
Step 2:
Step 3:
Step 4:
Step 5:
Step 6:
Step 7:
Step 8:
Step 9:
Step 10:
Connect a 5V supply PS1 to CRDL input (J1,
upper +) with the current limit set at 1.3A
Connect a 3.7V supply PS3 to BAT output (J2,
upper +) with the current limit set at 1.3A
Connect a current meter to JP6 as shown in
Figure 1
Connect the dc electronic load of 1.2A to BAT
(J2, upper +)
Insert a jumper shunt on JP2 and JP3, all other
jumper shunts are not installed
Turn on Power Supplies and dc electronic load,
adjust the power supply PS3 such that the
voltmeter V2 reads 3.7V
Both the red and the green LEDs should be on,
indicating power on and charging condition
The current meter I2 should read about 0.26A as
the charging current
Insert a jumper shunt on JP5 and the current
meter I2 should read about 0.55A charging
current
Insert a jumper shunt on both JP5 and JP7, the
Step 1:
Step 2:
Step 3:
Step 4:
Step 5:
Step 6:
Step 7:
Step 8:
Step 9:
Connect a 5V supply PS2 to USB with the
current limit set at 0.7A
Connect a 3.7V supply PS3 to BAT (upper +)
with the current limit set at 0.7A
Connect the dc electronic load of 0.6A to BAT
(upper +)
Install a jumper shunt on JP 8 to USBON
position
Turn on Power Supplies and dc electronic load,
adjust the power supply PS3 such that the
voltmeter V2 reads 3.7V
Both the red and the green LEDs should be on,
indicating power on and charging condition
The current meter I2 should read about 0.38A
charging current
Remove the jumper shunt on JP3 and apply a
3.3V supply, positive to pin 1 (at the right) of
JP3, negative to GND
Slowly reduce the electronic load current until
the green LED turns off, the current meter I2
should read about 75mA EOC current
current meter I2 should read about 0.95A
charging current
Step 11:
Step 12:
Step 13:
Remove the jumper shunt on JP3 and apply a
3.3V supply, positive to pin 1 (at the right) of
JP3, negative to GND
Slowly reduce the dc electronic load current until
the green LED turns off, the current meter I2
should read about 84mA EOC current
Insert a jumper shunt on JP4 and repeat Step
11, the current meter I2 should read 40mA EOC
current
2
AN1170.1
August 16, 2005
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