HA16116FP - Hitachi Semiconductor

HA16116FP Switching Regulator for Chopper Type DC/DC Converter

HA16116FP/FPJ and HA16121FP/FPJ are dual-channel PWM switching regulator controller ICs for use in chopper-type DC/DC converters. This IC series incorporates totem pole gate drive circuits to allow direct driving of a power MOS FET. The output logic is preset for booster, step-down, or inverting control in a DC/DC converter. This logic assumes use of an N-ch.

Features

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• Wide operating supply voltage range
* (3.9 V to 40.0 V) Wide operating frequency range (600 kHz maximum operation) Direct power MOS FET driving (output current ±1 A peak in maximum rating) Pulse-by-pulse overcurrent protection circuit with intermittent operation function (When overcurrent state continues beyond time set in timer, the IC operates intermittently to prevent excessive output current.)
• Grounding the ON/OFF pin turns the IC off, saving power dissipation. (HA16116: IOFF = 10 µA max.; HA16121: IOFF = 150 µA max.)
• Built-in UVL circuit (UVL voltage can be varied with external.