HA16664A

HA16654A, HA16664A Series PWM Controlled Switching Regulator 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 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 (H...