IRIS-A6159

•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 typ)
•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)
· Overload Protection with auto recovery (OLP)
· Overvoltage Protection with latch mode (OVP)
· Thermal Shutdown with latch mode (TSD)

IRIS-A6159 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 IRIS-A6159 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).