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NJW4170 - Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator

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.

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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Datasheet Details

Part number NJW4170
Manufacturer New Japan Radio
File Size 475.39 KB
Description Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator
Datasheet download datasheet NJW4170 Datasheet
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Full PDF Text Transcription

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NJW4170 Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator IC for Buck Converter 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. 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 the AM radio frequency.
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