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