Home datasheet HA16108FP


PWM Switching Regulator for High-performance Voltage Mode Control


The IC products in this series are primary control switching regulator control IC’s appropriate for obtaining
stabilized DC voltages from commercial AC power.

•  Operating frequencies up to a high 600 kHz
•  Built-in pre-driver circuit for driving power MOS FET
•  Built-in timer latch over-current protection function (HA16107)
•  The OCL enables intermittent operation by an ON/OFF timer for prevention of secondary overcurrent.
•  The UVL function (under voltage lockout) is applied to both Vin and Vref.
•  ON/OFF reset: an auto-reset function which is based on the time constant of an external capacitor and
observation of drops in Vin.
•  Since the over-voltage protection function OVP (the TL pin) only observes voltage drops in Vin, it is
possible to use the OVP and ON/OFF pin for independent purposes.
•  Built-in 34 V Zener diode between Vin and ground.

•  6.45 V reference voltage
•  Triangle wave generator
•  Error amplifier
•  Under voltage lockout protector
•  PWM comparator
•  Pulse-by-pulse current limitting
•  Timer-latch current limitting (HA16107)
•  ON/OFF timer function (HA16108)
•  Soft start and quick shutdown
•  Output circuit for power MOS FET driving



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