Descriptions
IRIS-G5624A is a hybrid IC consists from power MOSFET and a controller IC, designed for Indirect feed-back Quasi Resonant (including low frequency PRC) fly-back converter type SMPS (Switching Mode Power Supply) applications. This IC realizes high efficiency, low noise, downsizing and standardizing of a power supply system reducing external components count and simplifying the circuit designs.

Features
• Oscillator is provided on the monolithic control with adopting On-Chip
   Trimming technology.
• Small temperature characteristics variation by adopting a comparator to
   compensate for temperature on the control part.
• Low start-up circuit current (100uA max)
• Built-in Active Low-Pass Filter for stabilizing the operation in case of light
   load
• Avalanche energy guaranteed MOSFET with high VDSS
• The built-in power MOSFET simplifies the surge absorption circuit
   since the MOSFET guarantees the avalanche energy.
• No VDSS de-rating is required.
•Indirect feed-back by built-in error amplifier on Vin terminal
• Built-in constant voltage drive circuit
• Built-in step drive circuit
• Built-in low frequency PRC mode (≒ 20kHz)
• Various kinds of protection functions
   • Pulse-by-pulse Overcurrent Protection (OCP)
   • Overvoltage Protection with latch mode (OVP)
   • Thermal Shutdown with latch mode (TSD)