4.2V 500ma voltage boost USB charger

 4.2V voltage boost USB  charger  

 Size: 54 (length)*30(width)*16(high)mm
Input:DC head 3.5mm   positive(inner) / negative (outside)
Out put: USB
input voltage: 3-5V DC
Output voltage: 5.0-5.3V
Output current: 500mA
efficiency: 90%

Output ripple:50mV(MAX)
Tempture: (-40°C to  +85°C)
temperature rise when full load : 20 ° C
idel Current: 130uA
Load Regulation: ± 1%
Voltage regulation: ± 0.5%