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%