EV2631DQ-00A –28V, 1A LINEAR LI-ION BATTERY CHARGER WITH A 10
M
A HIGH VOLTAGE LDO
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The information in this document is subject to change without notice. Please contact MPS for current specifications.
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EV2631DQ-00A Rev. 1.0
www.MonolithicPower.com
4
12/25/2013
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QUICK START GUIDE
The output voltage on this board is preset to 4.2V (for a single cell battery). The board
layoutaccommodates most commonly used capacitors.
The LEDs are power indicators. When LED1 is on, the 5V input is present (LED1 is off when the input
is disconnected). When LED2 is on, the battery is charging, and when the battery is full or there is no
battery connected, LED 2 will turn off.
1. Set the charge current ICHG using the jumpers JP1, JP2, and JP3 per the following table:
JP1 JP2
JP3 I
CHG
X X
1000mA
X
800mA
X X
700mA
X
500mA
X
200mA
Where “X” indicates a connection.
2. Attach the positive and negative ends of the load to the VOUT and GND pins, respectively.
3. Attach the input voltage (VIN=4.5V) and the input ground to the VIN and GND pins, respectively.
4. LDO; is a Output with maximum load current 10mA.
5. Set the battery charge current ICHG should be follow under equation:
CHG
CHG
R
k
A
I
)
55
.
1
1
Where the R
CHG
are R3, R4 and R5