NJW4170KV1-A

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. It is suitable for supplying power to a Car Accessory, Audio Automation Equipment, Industrial Instrument and so on. 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 NJW4170U2 : SOT-89-5 NJW4170KV1 : DFN8-V1(ESON8-V1) ■ PACKAGE OUTLINE NJW4170U2 NJW4170KV1 PRODUCT CLASSIFICATION Part Number Version NJW4170U2-A A NJW4170KV1-A A NJW4170U2-B B ...