CR6853
Dec, 2007 V1.1 2/11
Chengdu Chip-Rail Tech. Co., Ltd. http://www.chiprail.com
Pin Assignment
Pin Descriptions
Name Description
GND GND Pin
FB
Voltage feedback pin. Output current of this pin could controls the PWM
duty cycle、OLP and SCP.
RI
This pin is to program the switching frequency. By connecting a resistor
to ground to set the switching frequency.
SEN
Current sense pin, a resistor connects to sense the MOSFET current.
VDD
Supply voltage pin.
GATE
Totem output to drive the external power MOSFET.
TYPICAL APPLICATION