unr-3.3/8-d5t C&D Technologies., unr-3.3/8-d5t Datasheet
unr-3.3/8-d5t
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unr-3.3/8-d5t Summary of contents
Page 1
... The tight accuracy, low noise and quick transient response demanded by today's low voltage CPU's, ASIC's and DSP's make power processing at the point of use the only viable solution. The UNR 18-33W series pro- vides a complete line of non-isolated DC/DC converters to satisfy this requirement. ...
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... Performance Specifications and Ordering Guide V I OUT OUT ➄ Root Model (Volts) (Amps) UNR-1.8/10-D5T 1.8 10 UNR-1.8/10-D5SM 1.8 10 UNR-2.5/10-D5T 2.5 10 UNR-2.5/10-D5SM 2.5 10 UNR-3.3/8-D5T 3.3 8 UNR-3.3/8-D5SM 3.3 8 UNR-3.3/8-D12T 3.3 8 UNR-3.3/8-D12SM 3.3 8 UNR-3.3/10-D5T 3.3 10 UNR-3.3/10-D5SM 3.3 10 UNR-3.3/10-D12T 3.3 10 UNR-3.3/10-D12SM 3.3 10 ➀ Typical +25°C under nominal line voltage and full-load conditions, unless otherwise A noted. All models are tested and specified with an external 22µ ...
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... Return pins should never be left open or connected via high-impedance paths). I/O Filtering and Noise Reduction All UNR 18-33W Series converters are tested and specified with external 470µF input capacitors (20mΩ ESR, 6Arms ripple-current rating) and external 22µF output capacitors (200mΩ ESR). External input capacitance is ...
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... On/Off Control The On/Off Control pin may be used for remote on/off operation. UNR 18- 33W Series DC/DC converters are designed so that they are enabled when the control pin is pulled high or left open (normal mode) and disabled when the control pin is pulled low (to less than +0.8V relative to Logic Ground). As shown in Figure 2, D5 models have internal 4.99kΩ ...
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... Single Output, Non-Isolated 12V UNR-1.8/10-D5T 20kΩ UNR-1.8/10-D5SM 5-10 LOAD Turns UNR-2.5/10-D5T UNR-2.5/10-D5SM UNR-3.3/8-D5T UNR-3.3/8-D5SM UNR-3.3/10-D5T UNR-3.3/10-D5SM UNR-3.3/8-D12T UNR-3.3/8-D12SM UNR-3.3/10-D12T UNR-3.3/10-D12SM Trim Note: Resistor values are in kΩ. Accuracy of adjustment is subject to Down tolerances of resistors and factory-adjusted output accuracy ...
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... Recommended PC Board Layout If necessary, a single pc board layout can accommodate both through-hole and SMT models of the UNR 18-33W Series. Note that on page 2 of this data sheet, the through-hole package is drawn with a bottom view of its pin locations, and the surface-mount package is drawn with of top view of its pin locations ...
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... On/Off Control to V Start-Up Time OUT D12 Models, Start-up from Enable (Full load, using specified output capacitor.) ENABLE 5V/div V OUT 1V/div UNR D5/D12 Series to 1.8/2.5/3. and 10 Amp DC/DC Converters IN 10msec/div 10msec/div Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 UNR18-33W.B01 Page OUT ...
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... Ambient Temperature ( UNR-2.5/10-D5T/D5SM Output Power vs. Ambient Temperature, No Air Flow 27.5 25 22.5 20 17.5 15 12.5 10 7.5 5 2.5 0 – Ambient Temperature ( UNR-3.3/8-D5T/D5SM Output Power vs. Ambient Temperature, No Air Flow 30 27.5 25 22.5 20 17.5 15 12.5 10 7.5 5 2.5 0 – Ambient Temperature ( www.murata-ps.com Single Output, Non-Isolated 12V UNR-3 ...
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... V = 4.75V 5. Load Current (Amps) www.murata-ps.com Single Output, Non-Isolated 12V UNR-3.3/8-D5T/D5SM Efficiency vs. Line/Load UNR-3.3/8-D12T/D12SM Efficiency vs. Line/Load ...
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... Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com © 2008 Murata Power Solutions, Inc. 04/09/08 UNR D5/D12 Series to 1.8/2.5/3. and 10 Amp DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 UNR18-33W.B01 Page OUT ...