FA3647N - Fuji Electric

FA3647N PWM control IC with light load power saving function For Switching Power Supply Control

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. They feature a number of functions that are equivalent to those of the FA531X series consisting of bipolar devices. In addition, they have a.

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 O.