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PDF IRIS-A6131 Data sheet ( Hoja de datos )

Número de pieza IRIS-A6131
Descripción INTEGRATED SWITCHER
Fabricantes International Rectifier 
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No Preview Available ! IRIS-A6131 Hoja de datos, Descripción, Manual

IRIS-A6131
Features
INTEGRATED SWITCHER
Small sized 8-pin DIP type full molded package, optimum IC for low-
height SMPS
Off-timer circuit is provided on the monolithic control IC
Low start-up circuit current (10uA max)
Low circuit current at operation (1.5mA typ)
Package Outline
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 Start-up circuit (the power loss in the start-up circuit is
reduced by cutting off the start-up circuit after the IC starts its
operation.)
Auto Burst Stand-by (realizing input power<0.1W at no load)
Auto Bias Function (stable burst operation without the interference on
transformer)
Two operational modes by auto switching functions
For normal operation: PRC mode
For stand-by operation (at light load): Burst mode
Built-in Leading Edge Blanking Function
Built-in constant voltage drive circuit
8 Lead PDIP
Various kinds of protection functions
Pulse-by-pulse Overcurrent Protection (OCP)
Key Specifications
Overvoltage Protection with latch mode (OVP)
Thermal Shutdown with latch mode (TSD)
MOSFET RDS(ON)
Pout(W)
Type VDSS(V) MAX ACinput(V) Note 1
Descriptions
IRIS-A6131 500
3.95Ω 100/120±15%
10
IRIS-A6131 is a hybrid IC consisting of a 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 component count and simplifying the circuit design.
Note: PRC is abbreviation for “Pulse Ratio Control” (On-width control with fixed OFF-time).
Typical Connection Diagram
8 76
5
D D NC Startup
IRIS-A6131
OCP Vcc GND FB
12
34
Note 1: The pout (W) represents the thermal rating at PRC Operation. The peak power output is obtained by
approximating 120 to 140% of the above listed value. When the output voltage is low and ON-duty is narrow, the
Pout (W) shall become lower than that of above value.
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IRIS-A6131 pdf
IRIS-A6131
IRIS-A6131
MOSFET Ta-PD1 Curve
1.6
1.4 PD1=1.35[W]
1.2
1
0.8
0.6
0.4
0.2
0
0 20 40 60 80 100 120 140 160
Ambient temperature Ta[]
IRIS-A6131
MIC TF-PD2 Curve
0.16 PD2=0.15[W]
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
0 20 40 60 80 100 120 140
Internal frame temperature TF[]
IRIS-A6131
Transient thermal resistance curve
10
1
0.1
0.01
10µ
100µ
1m
time t [sec]
10m 100m
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