PDF《PRODUCT OVERVIEW》

1 mA SMT Mounting M suffix MDC_ULS-30W_C08? Page

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30 OUTPUT Conditions ? Minimum Typical/Nominal Maximum Units Total Output Power See Derating 2.61

25 26.66 W Voltage Nominal Output Voltage No trim 3.2674 3.3 3.333 Vdc Setting Accuracy At 50% load, no trim -1

1 % of Vnom Output Voltage Range User-adjustable -10

10 % of Vnom. Overvoltage Protection Via magnetic feedback 4.2

5 5.7 Vdc Current Output Current Range 0.8

8 8 A Minimum Load Current Limit Inception 98% of Vnom., after warmup 8.5

10 11.3 A Short Circuit Short Circuit Current Hiccup technique, autorecovery within ±1.25% of Vout 0.3 mA Short Circuit Duration (remove short for recovery) Output shorted to ground, no damage Continuous Short circuit protection method Current limiting Regulation ? Line Regulation Vin = min. to max., Vout = nom., Iout = nom. ±0.1 % of Vout Load Regulation Iout = min. to max., Vin = 48V ±0.1 % of Vout Ripple and Noise

5 Hz-

20 MHz BW

90 130 mV pk-pk Temperature Coefficient At all outputs ±0.02 % of Vout./°C Maximum Capacitive Loading Low ESR, resistive load only

2000 μF MECHANICAL (Through Hole Models) Conditions ? ? Outline Dimensions 1.30x0.90x0.36 Inches (Please refer to outline drawing) LxWxH 33.02x22.86x9.144 mm Weight 0.58 Ounces 16.4 Grams Through Hole Pin Diameter 0.04 &

0.062 Inches 1.016 &

1.575 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate

50 ?-inches Gold overplate

5 ?-inches ENVIRONMENTAL Operating Ambient Temperature Range With Derating -40

85 °C Operating Case Temperature Range No derating, full power, 200lfm, Vertical mount -40

70 °C Storage Temperature Vin = Zero (no power) -55

125 °C Thermal Protection/Shutdown Measured in center

110 115

120 °C Electromagnetic Interference External filter is required Conducted, EN55022/CISPR22 B Class Radiated, EN55022/CISPR22 B Class Relative humidity, non-condensing To +85°C

10 90 %RH Altitude must derate -1%/1000 feet -500 10,000 feet -152

3048 meters RoHS rating ? RoHS-6 FUNCTIONAL SPECIFICATIONS, ULS-3.3/8-D48 (CONT.) Performance Specification Notes ? Unless otherwise noted, all specifications are typical at nominal input voltage, nominal output voltage and full load. General conditions are +25° Celsius ambient temperature, near sea level altitude, natural convection airflow. All models are tested and specified with external parallel

1 ?F and

10 ?F multi-layer ceramic output capacitors.The external input capacitor is

22 ?F ceramic. All capacitors are low-ESR types wired close to the converter.These capacitors are necessary for our test equip- ment and may not be needed in the user'

s application. ? Input (back) ripple current is tested and specified over

5 Hz to

20 MHz bandwidth. Input filtering is Cbus =

220 ?F/100V, Cin =

33 ?F/100V and Lbus =

12 ?H. ? All models are stable and regulate to specification under no load. ? Reduction of Hazardous Substances (RoHS) compliance is to RoHS-6 (six substances restricted including lead). See specifications. ? The Remote On/Off Control is referred to -Vin. ? Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. MDC_ULS-30W_C08? Page

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30 TYPICAL PERFORMANCE CURVES, ULS-3.3/8-D48 Maximum Current Temperature Derating at Sea Level (Vin = 36-75V, airflow is from pin

1 to pin 3) Efficiency vs. Line Voltage and Load Current @ 25°C 0.00 0.81 1.61 2.41 3.21 4.01 4.81 5.61 6.41 7.21 8.01