Datasheet > NJW4170

NJW4170

更新时间： 2025-09-19 01:08:55

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描述
Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator IC for Buck Converter

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NJW4170 数据手册

NJW4170

Current Mode Control High Speed Frequency

Internal 1A MOSFET Switching Regulator IC for Buck Converter

GENERALDESCRIPTION

■ PACKAGE OUTLINE

The NJW4170 is a high speed oscillating frequency buck

converter with 40V/1A MOSFET. Current mode control and built-in

phase compensation circuit minimize external parts and contribute

to using a Low ESR Output Capacitor(MLCC) within wide input

range from 4.5V to 40V. Therefore, the NJW4170 can realize

downsizing of applications.

NJW4170U2

Also, it has a soft start function, an external clock synchronization

function, an over current protection and a thermal shutdown circuit.

Over 2MHz of Switching frequency can avoid interference with

theAM radio frequency.

It is suitable for supplying power to a CarAccessory,Audio

Automation Equipment, Industrial Instrument and so on.

NJW4170KV1

FEATURES

Oscillating Frequency

2.4MHz typ. (Aver.)

2.1MHz typ. (B ver.)

80ns typ.(Aver.)

Minimum ON time

85ns typ.(B ver.)

Current mode Control

External Clock Synchronization

Wide Operating Voltage Range

Switching Current

4.5V to 40V

1.4Amin.

PWM Control

Built-in Compensation Circuit

Correspond to Ceramic Capacitor (MLCC)

Soft Start Function

4ms typ.

UVLO (Under Voltage Lockout)

Over Current Protection (Hiccup type)

Thermal Shutdown Protection

Standby Function

Package Outline

NJW4170U2 : SOT-89-5

NJW4170KV1 : DFN8-V1(ESON8-V1)

PRODUCTCLASSIFICATION

Oscillating

Frequency

Operating

Temperature Range

General Spec.

-40 C to +125 C

General Spec.

-40 C to +125 C

General Spec.

-40 C to +125 C

Part Number

NJW4170U2-A

NJW4170KV1-A

NJW4170U2-B

Version

Package

2.4MHz typ.

2.1MHz typ.

SOT-89-5

DFN8-V1

(ESON8-V1)

SOT-89-5

Ver.2016-01-25

- 1 -

12 3 4 5 6 7...24

中文翻译

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