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IRIS-A6351
Features
Oscillator is provided on the monolithic control IC 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 (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
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
8 Lead PDIP
Descriptions
IRIS-A6351 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
1
2
3
4
8
7
6
5
IRIS-A6351
MOSFET
RDS(ON)
Pout(W)
VDSS(V)
MAX
Note 1
230
±
15%
10
85 to 264
8
Type
ACinput(V)
IRIS-A6351
650
3.95
Ω
Key Specifications
Data Sheet No. PD 96936A
Note 1: The Pout(W) represents the thermal rating at PRC Operation, and the
peak power output is obtained by approximately 120 to 150% 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.