NJW4161

- 9 -

Ver.2015-05-11

PIN DESCRIPTIONS

PIN NAME

PIN

NUMBER

FUNCTION

REGH

1

Output pin of the high side regulator.

Connect a bypass capacitor to stabilize a driver circuit.

SI

2

Current Sensing pin

over current protection operates.

OUT

3

Output pin for Power MOSFET Driving

order to protect a gate of Pch MOSFET.

4

Power Supply pin

IN-

5

Output Voltage Detecting pin

Connects output voltage through the resistor divider tap to this pin in order to

voltage of the IN- pin become 0.8V.

FB

6

Feedback Setting pin

The feedback resistor and capacitor are connected between the FB pin and the

IN- pin.

RT

7

Oscillating Frequency Setting pin by Timing Resistor.

Oscillating Frequency should set between 50kHz and 1MHz.

NJW4161 becomes the standby mode when make RT pin open.

GND

8

GND pin

Technical Information

NJW4161 Application Manual