IRIS-X6757

• 7-pin SIP type full molded package, optimum IC for low-height SMPS.
• 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)
•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 constant voltage drive circuit
• Built-in step drive circuit
• Built-in low frequency PWM mode ( 22 kHz)
• UVLO Burst Standby
• Two operational modes by auto switching functions according to load
  -  For middle~heavy load operation : QR mode
  - For light~middle load operation : 1 Bottom Skip mode
• Various kinds of protection functions
  - Pulse-by-Pulse Overcurrent Protection (OCP)
  - Overvoltage Protection with Latch mode (OVP)
  - Overload Protection with Latch mode (OLP)
  - The maximum limit of on-time

*1 Refer to MOS FET A.S.O. curve
*2 Maximum switching current
  - The maximum switching current is the Drain current determined by the drive voltage of the IC and threshold voltage (Vth) of the MOS FET.
*3 Refer to MOS FET Tch-EAS curve
*4 Refer to MOS FET Ta-PD1 curve

IRIS-X6757 is a hybrid IC consisting of a power MOSFET and a controller IC, designed for Quasi-Resonant (including low frequency PWM) fly-back converter type SMPS (Switching Mode Power Supply) applications. This IRIS-X6757 realizes high efficiency, low noise, downsizing and standardizing of a power supply system reducing external component count and simplifying the circuit design.