2010/08

TO-220F (FMY207)

STR-Y6700

Series

Power IC for Quasi-Resonant Mode Switching Power Supplies

with Low Standby Power, High Efficiency and Low Noise in Full Load Range

The STR-Y6700 series products are power ICs for quasi-resonant (QR) switching mode power

supplies, incorporating a power MOSFET and a controller IC.

The product achieves high efficiency and low noise systems, by automatic switching of

Auto-Standby operation under light load conditions, QR operation and Bottom-Skip QR

operation in normal operation.

The product easily achieves high cost-performance power supply systems with few external

components.

Multi-Mode Control

The automatic operation mode switching with three steps according to load conditions achieves the optimal

power supply systems with high efficiency and low noise across full load range.

・In Standby------------------------------------------------------ Auto Standby Operation ( Burst-Oscillation)

・Under Low to Middle Load Conditions------------------- Bottom-Skip Quasi-Resonant Operation (Bottom-Skip QR)

・Under Middle to Rating (or Heavy) Load Conditions -- Quasi-Resonant Operation (QR)

Current-Mode Control

Built-in Startup Circuit, enabling Low Power Consumption

Auto-Standby Function with burst-oscillation, enabling low standby power

Soft-ON Function, preventing the audible noise from transformer at standby (Burst-Oscillation)

Built-in Soft-Start Function

Built-in Bias Assist Function

Overcurrent Protection (OCP) with AC Input Compensation Function

Built-in Leading Edge Blanking Function

Built-in High-Voltage Power MOSFET with Avalanche Energy Guaranteed

Protection Functions

・Overcurrent Protection (OCP) ---------------Pulse-by-Pulse

・Overload Protection (OLP)-------------------Latch Shutdown

・Overvoltage Protection (OVP) --------------Latch Shutdown

・Thermal Shutdown Protection (TSD) ------Latch Shutdown

Switching Power Supplies for

Digital Consumer Equipments: LCD-TVs, BD / DVD Players / Recorders, etc.,

Home Appliance (White Goods), OA Equipments, Industry Machines, Communication Equipments, Others

Product No.

MOSFET

( )

STR-Y6735

500

0.8

STR-Y6753

1.9

STR-Y6754

650

1.4

Product No.

MOSFET

( )

STR-Y6763

3.5

STR-Y6765

2.2

STR-Y6766

800

1.7