KRB series is a power supply that it supplying power to battery.It is used in wide input range,non-isolated regulated power converter.It is two packages:insert and connecting down-lead.
Input Characteristic:

Voltage Range: 2:1 / 4:1
Voltage Accuracy:+/- 3 %.
(20 MHz BW) Ripple and Noise:200 mV p-p, max.
Continuous short circuit time: >30 sec., automatics recovery
Line regulation: +/- 0,5 % max.,(3.3 VDC output +/- 1 % max )
Load regulation:+/- 0,5 % typ., +/- 1 % max.(No load to full load)¡¡
Temperature coefficient:+/- 0,02 % /deg.C

Datasheet Download:
http://www.sun-yuan.com/download/20086281549474177.pdf