Description

The HA16666P/FP is a voltage mode PWM (pulse width modulation) control IC for switching regulator control. It can drive a power MOS FET efficiently on 600 kHz. Its stanby current is 0.3 mA (max), and it is used as the primary control power supply.

Functions

•  +5 V reference voltage circuit

•  Triangular waveform oscillator

•  PWM comparator

•  Output circuit (Totem pole output)

•  Overcurrent protection circuit (with one-pulselatch mode)

•  Undervoltage lockout protectoin circuit

•  Soft start and quick shutdown function

•  Remote control function

•  Comparator with internal 1.3 V reference voltage

Features

•  High-speed switching;

tr = 80 ns (15 V amplitude)

tf = 40 ns (15 V amplitude)

•  Low power dissipation;

0.3 mA max in standby state

12 mA max in operation state (VIN = 15 V)

•  Dual-slope highly accurate dead-band duty setup circuit; Setup accuracy Du = ±3% (max)

•  Wide output pulse width control range; 0 to 75%