IRIS-A6331 Datasheet, PDF (1/7 Pages) International Rectifier – INTEGRATED SWITCHER

Data Sheet No. PD 96935A
IRIS-A6331
Features
INTEGRATED SWITCHER
• Oscillator is provided on the monolithic control with adopting On-Chip-
Trimming technology.
Package Outline
• Small temperature characteristics variation by adopting a comparator to
compensate for temperature on the control part.
• Low start-up circuit current (50uA 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
8 Lead PDIP
• Various kinds of protection functions
• Pulse-by-pulse Overcurrent Protection (OCP)
• Overvoltage Protection with latch mode (OVP)
• Thermal Shutdown with latch mode (TSD)
Key Specifications
Type
MOSFET
VDSS(V)
RDS(ON)
MAX
ACinput(V)
IRIS-A6331
500
3.95Ω 100/120±15%
Pout(W)
Note 1
10
Descriptions
Note1: The Pout (W) represents the thermal rating at PRC Operation,
and the peak power output is obtained by approximately 120 to 140%
of the above listed. When the output voltage is low and ON-duty is
narrow, the Pout (W) shall become lower than that of above.
IRIS-A6331 is a hybrid IC consists from 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 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
IRIS-A6331
1
8
2
7
3
6
4
5
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