FA3647 Overview
The FA3641P(N) and FA3647P(N) 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.
FA3647 Key Features
- Uses a newly developed CMOS process with high dielectric strength (30V) for implementing low power consumption
- Standby current of 2µA or less (at Vcc=14V), and operating current of 1.9mA (typ.)
- Automatically reduces the oscillation frequency to suppress loss of the power supply in light load mode
- Overvoltage protection function detecting Vcc voltage
- A drive circuit for connecting a power MOSFET directly
- Output peak current: Source current -500mA Sink current +1A
- Pulse-by-pulse overcurrent limiting function
- Overload cutoff function (latch or non-latch mode selectable)
- Output ON/OFF control function by external signal
- Latch mode overvoltage shutdown function