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2 Watts
IU Series
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Regulated Single & Dual Output
SIP or DIP Package
Wide 2:1 Input Range
1000 VDC Isolation, 3000 VDC Option
Continuous Short Circuit Protection
Efficiency up to 78%
-40 °C to +85 °C Operating Temperature
Specification
Input
General
Input Voltage Range
• 5 V models: 4.5 - 9.0 V
12 V models: 9.0 - 18.0 V
24 V models: 18.0 - 36.0 V
48 V models: 36.0 - 72.0 V
Efficiency
• See table
Isolation Voltage
• 1000 VDC input to output 1 min
Optional 3000 VDC (see note 2)
Input to Output
Capacitance
• 60 pF
Input Current
• See table
Input Reflected Ripple • 35 mA pk-pk through 12 µH inductor,
Switching Frequency
MTBF
• 100-650 kHz variable
5 Hz to 20 MHz
• >2.7 MHrs to MIL-STD-217F
Input Filter
• Capacitor
Physical
Output
Case Material
• Non-conductive black plastic (UL94V-0
rated). Optional metal:
Output Voltage
• See tables
Output Voltage Balance • 1ꢀ betꢁeen dual output rails
nickel coated copper
Initial Set Accuracy
Start Up Rise Time
Line Regulation
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2ꢀ
Pin Material
• SIP case: Alloy 42 solder coated
DIP case: ø0.5 mm brass solder coated
• 100 ms typical
Potting Material
• Epoxy (UL94V-0 rated)
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0.5ꢀ
Lead Soldering
Temperature
• 260 ºC 1.5 mm from case for 10 s
Load Regulation
Cross Regulation
Transient Response
1ꢀ for 25-100ꢀ load change
5ꢀ
3ꢀ deviation recovering to <1ꢀ ꢁithin
300 µs for 25ꢀ load change
Environmental
Operating Temperature • -40 °C to +85 °C, derate from 100ꢀ load
Ripple & Noise
• 80 mV pk-pk, 20 MHz BW. See note 6.
at +85 °C to 0ꢀ load at +100 °C
Short Circuit Protection • Continuous ꢁith auto recovery
Storage Temperature
Case Temperature
Humidity
• -40 °C to +125 °C
Current Limiting
Remote On/Off
• Typically 110ꢀ of max Iout
• +100 °C max
• Applying 5 V via 1 kΩ current limiting
resistor & diode to pin 3 turns output off
• Up to 95ꢀ RH, non-condensing
• Convection-cooled
Cooling
Temperature Coefficient • 0.02/°C max
Maximum Capacitive
Load
• See table
Remote On/Off
• Optional on SIP package models applying
5 V via 1 kΩ current limiting resistor and
diode turns output off (see note 4)