IRIS-A6131

• Small sized 8-pin DIP type full molded package, optimum IC for lowheight SMPS
• Off-timer circuit is provided on the monolithic control IC
• Low start-up circuit current (10uA max)
• Low circuit current at operation (1.5mA typ)
• 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.
• Built-in Start-up circuit (the power loss in the start-up circuit is reduced by cutting off the start-up circuit after the IC starts its operation.)
• Auto Burst Stand-by (realizing input power<0.1W at no load)
• Auto Bias Function (stable burst operation without the interference on
transformer)
• Two operational modes by auto switching functions
  - For normal operation: PRC mode
  - For stand-by operation (at light load): Burst mode
• Built-in Leading Edge Blanking Function
• Built-in constant voltage drive circuit
  - Various kinds of protection functions
  - Pulse-by-pulse Overcurrent Protection (OCP)
  - Overvoltage Protection with latch mode (OVP)
  - Thermal Shutdown with latch mode (TSD)

IRIS-A6131 is a hybrid IC consisting of a power MOSFET and a controller IC, designed for PRC fly-back converter type SMPS (Switching Mode Power Supply) applications, applicable for PRC operation for small power SMPS. This IC realizes downsizing and standardizing of a power supply system reducing external component count and simplifying the circuit design.

Note: PRC is abbreviation for "Pulse Ratio Control" (On-width control with fixed OFF-time).