■ Description

The FA551X series are the PWM type switching power supply control ICs that can directly drive power MOSFET. These ICs use a CMOS device with high dielectric strength (30V) to implement low power consumption. These ICs contain many function in a small 8-pin package. With these ICs, a high performance and compact power supply can be created because not many external discrete components are needed.

■ Features

? Lowcurrent consumption by CMOS process with high dielectric strength (30V)

? Standby current of 2μA or less (at Vcc=14V), and operating current of 1.5mA (typ)

? Overvoltage protection function detecting the Vcc voltage

? Adrive circuit for connecting a power MOSFET directly

? Output peak current: ±1.5A

? Pulse-by-pulse overcurrent limiting function

? Overload protection function (latch or non-latch mode selectable)

? Output ON-OFF function by external signal

? Latch-mode overvoltage shutdown function

? Undervoltage lockout function (16.5V ON / 9V OFF)

? Reference voltage output (5V)

? 8-pin package (DIP/SOP)