Description

The FA551X series is a PWM type switching power supply control IC that can directly drive power MOSFET. It uses a CMOS device with high dielectric strength (30V) to implement low power consumption. This IC contains many functions in a small 8-pin package. With this IC, a high-performance and compact power supply can be created because not many external discrete components are needed.

Specifications and features

- Low current 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
- A drive 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)

Application Scenarios

This FA551X series IC is ideal for applications that require a PWM type switching power supply control with direct power MOSFET drive. It is suitable for creating high-performance and compact power supplies with minimal external components required.

Comparison

- Low power consumption due to high dielectric strength CMOS process

- Limited to applications that require PWM type switching power supply control