NJW4161

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Ver.2015-05-11

MOSFET Drive Switching Regulator IC for Buck Converter

GENERAL DESCRIPTION

■ PACKAGE OUTLINE

FEATURES

Pch MOSFET Driving

Wide Operating Voltage Range

3.1V to 40V

PWM Control

Automatic PWM/PFM Control improves power efficiency at light load. (C ver.)

Wide Oscillating Frequency

50kHz to 1MHz

Soft Start Function

15ms (typ.)

Over Current Protection

Hiccup type (A, C ver.)

Latch type (B ver.)

Thermal Shutdown Protection

UVLO (Under Voltage Lockout)

Standby Function

Package Outline

NJW4161D: DIP8

PRODUCT CLASSFICATION

Part Number

Version

Controller

Over Current

Protection

Package

Operating

Temperature

Range

NJW4161R-A

A

PWM control

Hiccup type

MSOP8

(VSP8)

General Spec.

-40 C to +125 C

NJW4161D-A

A

PWM control

Hiccup type

DIP8

General Spec.

-40 C to +125 C

NJW4161R-B

B

PWM control

Latch type

MSOP8

(VSP8)

General Spec.

-40 C to +125 C

NJW4161R-C

C

PWM/PFM

control

Hiccup type

MSOP8

(VSP8)

General Spec.

-40 C to +125 C

The NJW4161 is a MOSFET Drive switching regulator IC for

Buck Converter that operates wide input range from 3.1V to 40V.

It can provide large current application because of built-in highly

effective Pch MOSFET 10V drive circuit.

There are two types, Hiccup type and Latch type, of over

current protection version.

It is suitable for logic voltage generation from high voltage that

Car Accessory, Office Automation Equipment, Industrial

Instrument and so on.

NJW4161R

NJW4161D

(MSOP8(VSP8))

(DIP8)