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IRIS-F6426S

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.

• 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)

INTEGRATED SWITCHER

Package Outline

TO-247 Fullpack (5 Lead)

Descriptions

IRIS-F6426S is a hybrid IC consists from power MOSFET and a controller IC, designed for 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. (Note). PRC is abbreviation of “Pulse Ratio

Control” (On-width control with fixed OFF-time).

Typical Connection Diagram

SSSS

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DDDD

OOOOCCCCPPPP////FFFFBBBB

IIIIRRRRIIIISSSS----FFFF6666444400000000

Type

MOSFET

VDSS(V)

RDS(ON)

MAX

AC input(V)

Pout(W)

Note 1

100±15%

145

120±15%

190

IRIS-F6426S

450

0.58Ω

Key Specifications