■Description
The FA531X series are bipolar ICs for switching power supply control that can drive a power MOSFET. These ICs contain many functions 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
• Drive circuit for connecting a power MOSFET
• Wide operating frequency range (5 to 600kHz)
• Pulse-by-pulse overcurrent limiting function
• Overload cutoff function (Latch or non-protection mode selectable)
• Output ON/OFF control function by external signal
• Overvoltage cutoff function in latch mode
• Undervoltage malfunction prevention function
• Low standby current (90µA typical)
• Exclusive choices by circuits (See selection guide on page 25)
• 8-pin package (DIP/SOP)