UNR-3.3/3-D5SM-C Murata Power Solutions Inc, UNR-3.3/3-D5SM-C Datasheet
UNR-3.3/3-D5SM-C
Specifications of UNR-3.3/3-D5SM-C
Available stocks
Related parts for UNR-3.3/3-D5SM-C
UNR-3.3/3-D5SM-C Summary of contents
Page 1
... Safety agency approvals are currently in progress. +V OUT OUTPUT RETURN ➀ "D5" models do not have input undervoltage shutdown. ➁ "D5" models employ a more traditional buck-regulator design in which this FET is replaced with a power Schottky diode. email: sales@murata-ps.com 04 Nov 2010 MDC_UNR 3.6-10W_B02 Page ...
Page 2
... The UNR-1.8/2-D5 and D5SM models require an external 15k: 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 ed with an external 22μF input capacitor. All other models are specifi ed with no external I/O capacitors. Output noise on the D12 models can be reduced signifi ...
Page 3
... Logic Ground N.C. On/Off Control Logic Ground +Output On/Off Control Output Return N.C. Input Return +Output +Input N.C. No Pin Output Return No Pin Input Return No Pin +Input email: sales@murata-ps.com 04 Nov 2010 MDC_UNR 3.6-10W_B02 Page 1.01 ±0.02 (25.65 ±0.51 ) 0.10 0.020 (0.51) 0.055 (1.40) ...
Page 4
... D5 models require a minimum 300mA load current to maintain specifi ed regulation. D12 models have no minimum load requirement. Operating D5 models under no-load conditions will not damage these devices, however they may not meet all listed specifi cations. The UNR- 1.8/2-D5 and D5SM require an external 15: 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 5
... Ambient Temperature (˚ I/O Filtering and Noise Reduction All D5 models of UNR 3.6-10W Series DC/DC converters achieve their rated ripple and noise specifi cations without the use of external input/ output capacitors. The UNR-3.3/3-D12 and D12SM models are tested and specifi ed with a single, external 22μF input capacitor (minimally rated for 1 ...
Page 6
... On/Off Control The On/Off Control pin may be used for remote on/off operation. UNR 3.6-10W Series 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 the fi ...
Page 7
... UNR Series 3.6-10W DC/DC Converters OUT UNR-3.3/3-D5/-D5SM (Guaranteed efficiency = 86 and 5. 1.5 2 +3.3V Output Current (Amps) UNR-3.3/3-D12/-D12SM (Guaranteed efficiency = 87 12V and 10. 13. 12V IN 1 1.5 2 +3.3V Output Current (Amps) email: sales@murata-ps.com 04 Nov 2010 MDC_UNR 3.6-10W_B02 Page 3A) OUT V = 4.75V IN 2 3A) OUT 2.5 3 ...
Page 8
... EMI Radiated Emissions If you’re designing with EMC in mind, please note that all of Murata Power Solutions' 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 ...