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NJW4170U2-B Datasheet Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator

Manufacturer: New Japan Radio

Overview: NJW4170 Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator IC for Buck Converter.

Download the NJW4170U2-B datasheet PDF. This datasheet also includes the NJW4170 variant, as both parts are published together in a single manufacturer document.

General Description

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.

Key Features

  • Oscillating Frequency 2.4MHz typ. (A ver. ) 2.1MHz typ. (B ver. ) Minimum ON time 80ns typ. (A ver. ) 85ns typ. (B ver. ) Current mode Control External Clock Synchronization Wide Operating Voltage Range 4.5V to 40V Switching Current 1.4A min. 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 NJW.

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