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ICH7548WS12 Datasheet(PDF) 4 Page - XP Power Limited |
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ICH7548WS12 Datasheet(HTML) 4 Page - XP Power Limited |
4 / 4 page 17-Apr-07 Derating Curves ICH/IFH Series 0 10 20 30 40 50 60 70 80 90 100 Power Dissipated vs Ambient Temperature And Air Flow - ICH50-150S 0 5 10 15 20 25 30 35 40 45 Ambient Temperature (˚C) Natural Convection 20ft./min. (0.1 m/s) 100 ft./min. (0.5 m/s) 200 ft./min. (1.0 m/s) 300 ft./min. (1.5 m/s) 400 ft./min. (2.0 m/s) 500 ft./min. (2.5 m/s) 600 ft./min. (3.0 m/s) 700 ft./min. (3.5 m/s) 800 ft./min. (4.0 m/s) 0 10 20 30 40 50 60 70 80 90 100 Power Dissipated vs Ambient Temperature And Air Flow - IFH200S 0 5 10 15 20 25 30 35 40 45 Ambient Temperature (C) Natural Convection 20ft./min. (0.1 m/s) 100 ft./min. (0.5 m/s) 200 ft./min. (1.0 m/s) 300 ft./min. (1.5 m/s) 400 ft./min. (2.0 m/s) 500 ft./min. (2.5 m/s) 600 ft./min. (3.0 m/s) 700 ft./min. (3.5 m/s) 800 ft./min. (4.0 m/s) THERMAL RESISTANCE vs AIR FLOW Air Flow Rate Typical Rca Natural Convection 20 ft./min (0.1 m/s) 7.12 ˚C/W 100 ft./min (0.5 m/s) 6.21 ˚C/W 200 ft./min (1.0 m/s) 5.17 ˚C/W 300 ft./min (1.5 m/s) 4.29 ˚C/W 400 ft./min (2.0 m/s) 3.64 ˚C/W 500 ft./min (2.5 m/s) 2.96 ˚C/W 600 ft./min (3.0 m/s) 2.53 ˚C/W 700 ft./min (3.5 m/s) 2.37 ˚C/W 800 ft./min (4.0 m/s) 2.19 ˚C/W Temperature Rise = Pd x Rca Where Pd = Pin - Pout or Pout (1- η) / η Output may be trimmed by ±10% (±5% for dual output models) with a fixed resistor or an external trimpot as shown. ON/OFF -Vin A HIGH SIGNAL HERE WILL DISABLE OUTPUT +SENSE -SENSE TRIM DOWN TRIM UP TRIM +SENSE TRIM -SENSE 10K ohms TRIMPOT +Vo -Vo Ceramic 0.1 µF Solid tantalum 10 µF To Scope Resistor Load Output noise is measured with a 10 µF tantalum capacitor and 0.1 µF ceramic capacitor across output. Application Notes Remote On/Off Control External Output Trimming Output Noise LOGIC TABLE Logic State (Pin 2) Negative Logic Positive Logic Logic Low Switch Closed Module On Module Off Logic High Switch Open Module Off Module On |
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