iris-a6331 International Rectifier Corp., iris-a6331 Datasheet

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iris-a6331

Manufacturer Part Number
iris-a6331
Description
Integrated Switcher
Manufacturer
International Rectifier Corp.
Datasheet
• 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 (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)
Descriptions
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).
Features
Typical Connection Diagram
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
IRIS-A6331
8 8 8 8
7 7 7 7
6 6 6 6
5 5 5 5
Key Specifications
IRIS-A6331
Type
MOSFET
VDSS(V)
INTEGRATED SWITCHER
Package Outline
500
RDS(ON)
3.95 á
MAX
8 Lead PDIP
IRIS-A6331
100/120 H 15%
ACinput(V)
www.irf.com
Pout(W)
Note 1
10
1

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iris-a6331 Summary of contents

Page 1

... Thermal Shutdown with latch mode (TSD) Descriptions 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 “ ...

Page 2

... IRIS-A6331 Absolute Maximum Ratings (Ta=25 (Refer Gnd 2 and 5) Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to terminals stated, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions ...

Page 3

... IRIS-A6331 Electrical Characteristics (for Control IC) Electrical characteristics for control part (Ta=25`, Vin=20V,unless otherwise specified) Symbol Definition V Operation start voltage in(ON) V Operation stop voltage in(OFF) I Circuit current in operation in(ON) I Circuit current in non-operation in(OFF) T Maximum OFF time OFF(MAX) Vth O.C.P/F.B Pin threshold voltage I O.C.P/F.B Pin extraction current OCP/ ...

Page 4

... ASO temperature derating shall be made by obtaining ASO Coefficient from the left curve in your use. 0.01 120 1 Avalanche energy derating curve 100 1.2 25 Channel temperature Tch [ IRIS-A6331 MOSFET ] A.S.O. Curve 0.1ms 1ms 10 100 1000 Drain-to-Source Voltage VDS[V] IRIS-A6331 50 75 100 125 150 ` ] www.irf.com 4 ...

Page 5

... Ambient temperature Ta 0.1 0.01 1µ 10µ 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 120 140 160 IRIS-A6331 Transient thermal resistance curve 100µ 1m time t [sec] IRIS-A6331 T -P Curve for Control =0.14[ 100 120 140 Internal frame temperature TF 10m 100m www.irf.com 5 ...

Page 6

... IRIS-A6331 Block Diagram Vin 3 UVLO × Ù PWM OSC Lead Assignments Pin Assignment (Top View) Source 1 8 Drain GND 2 7 Drain Vin 3 6 N.C. OCP/ GND Other Functions O.V.P. – Overvoltage Protection Circuit T.S.D. – Thermal Shutdown Circuit REG Latch Delay Internal Bias ...

Page 7

... IRIS-A6331 Case Outline A6331 WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 a. Type Number b. Lot Number st 1 letteræThe last digit of year nd 2 letteræMonth for Jan. to Sept for Oct ...

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