The HA16654A and HA16664A are PWM control switching regulator ICs which drive a power MOSFET at high speed and high frequency. The standby current is limited to as small as 1.5 mA (typ). These devices incorporate totem pole circuits suited for high-speed push-pull operation at the output stage, accomplishing high-speed switching with rising time tr= 80 ns (typ) and falling time tf= 40 ns (typ) at 20 V swing.

Functions

? Reference voltage circuit

? Triangular waveform oscillation circuit

? PWM comparator circuit

? Low-input malfunction protection circuit

? Output drive circuit

? Soft start and quick shut down

特性 Features

? High speed switching: tr= 80 ns, tf= 40 ns (typ) when use exernal driver circuit

? High frequency operation:

HA16654A (f = 100 kHz to 500 kHz)

HA16664A (f = 100 kHz to 200 kHz)

Low power dissipation : 2 mA max in standby state

? 5 V reference voltage

? Low-input malfunction protection (High threshold voltage: 10 V Typ, Low threshold voltage: 8 V Typ)

? Adjustable dead band width

? Enlarged output pulse width control range (0 to 80)

? Soft start and quick shut down functions

? Single output: totem pole