UNR-1.8/2-D5 Datel, Inc., UNR-1.8/2-D5 Datasheet
UNR-1.8/2-D5
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UNR-1.8/2-D5 Summary of contents
Page 1
... The low-cost, easy-to-use (no external components required), highly reliable (100% fully automated SMT construction) 3.6-10W UNR Series makes this power processing at the concluding point of use a practical reality today. These versatile DC/DC's are fully line and load regulated. They feature user- optional on/off control (for power-sequencing requirements), output current limiting, and short-circuit protection (foldback technique with auto-recovery) ...
Page 2
... A noted. The UNR-1.8/2-D5 and D5SM models require an external 15kΩ pull-up resistor between +Input and On/Off Control for normal operation. See On/Off Control for details. ➁ Ripple/Noise (R/N) measured over a 20MHz bandwidth. The UNR-3.3/3-D12 and D12SM models are specifi ...
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... The UNR-1.8/2-D5 and D5SM require an external 15Ω pull-up resistor between +Input and On/Off Control for normal operation. See On/Off Control for details. The UNR-3.3/3-D12 and D12SM are specifi ...
Page 4
... For DATEL UNR Series 3.6-10 Watt DC/DC Converters, you should use slow-blow type fuses with values no greater than the following. Model Number UNR-1.8/2-D5/-D5SM UNR-2.5/2-D5/-D5SM UNR-3.3/3-D5/-D5SM UNR-3.3/3-D12/-D12SM Start-Up Threshold and Undervoltage Shutdown (UNR-3 ...
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... CONTROL LOGIC GROUND Figure 2. Driving the On/Off Control Pin Internal Pull-Up Model Resistor (R ) Resistor (R IP UNR-1.8/2-D5/-D5SM 1kΩ UNR-2.5/2-D5/-D5SM 1kΩ UNR-3.3/3-D5/-D5SM 1kΩ UNR-3.3/3-D12/-D12SM 10kΩ Solder Refl ow For UNR 3.6-10W Series surface-mount devices, the packages' gull-wing leads are made of tin-plated (150 microinches) copper. The gull-wing confi gu- ration, as opposed to " ...
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... UNR Series Effi ciency vs. Output Current and Input Voltage UNR-1.8/2-D5/-D5SM (Guaranteed efficiency = 77 and 4. 5. 0.5 0.8 1.1 1.4 +1.8V Output Current (Amps) UNR-2.5/2-D5/-D5SM (Guaranteed efficiency = 83 and 5. 0.5 0.8 1.1 1.4 +2.5V Output Current (Amps UNR-3.3/3-D5/-D5SM = 2A) (Guaranteed efficiency = 86 OUT ...
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... EMI Radiated Emissions If you’re designing with EMC in mind, please note that all of DATEL’s 3.6-10 Watt UNR Series DC/DC Converters have been characterized for radiated and conducted emissions in our new EMI/EMC laboratory. Testing is conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC test software. Radiated emissions are tested to the limits of FCC Part 15, Class B and CISPR 22 (EN 55022), Class B. Correlation to other specifi ...