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PDF IRIS-A6331 Data sheet ( Hoja de datos )
| Número de pieza | IRIS-A6331 | |
| Descripción | INTEGRATED SWITCHER | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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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
18
27
36
45
www.irf.com 1
1 page  
IRIS-A6331
IRIS-A6331
MOSFET Ta-PD1 Curve
1.6
PD1=1.35[W]
1.4
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-A6331
TF-PD2 Curve for Control IC
0.16
PD2=0.14[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℃[ ]
10
1
0.1
0.01
1µ
IRIS-A6331
Transient thermal resistance curve
10µ 100µ
1m
time t [sec]
10m 100m
www.irf.com 5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet IRIS-A6331.PDF ] | |
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