MEU1 Series
www.murata-ps.com
Isolated 1W Single Output DC/DC Converters
SELECTION GUIDE
Order Code
FEATURES V V mA % mVp-p mA % pF kHrs
MEU1S0303ZC 3.3 3.3 303 11 14 27 50 385 73 76 28 3084
UL60950 recognised
MEU1S0305ZC 3.3 5 200 9 12 21 45 373 76 79 30 3125
Single isolated output MEU1S0309ZC 3.3 9 111 10 13 16 40 376 75 79 34 3960
MEU1S0312ZC 3.3 12 83 9 12 15 40 369 77 81 40 3343
1kVDC isolation
MEU1S0315ZC 3.3 15 67 8 10 14 40 371 77 81 33 3140
Efciency up to 87% MEU1S0503ZC 5 3.3 303 9 12 26 50 249 74 77 29 2762
MEU1S0505ZC 5 5 200 7 9 19 45 244 78 81 34 3354
Wide temperature performance at full
MEU1S0509ZC 5 9 111 9 12 17 40 245 77 81 47 2952
1 watt load, 40C to 85C
MEU1S0512ZC 5 12 83 8 10 17 40 239 78 83 45 3317
3
MEU1S0515ZC 5 15 67 6 8 12 35 239 78 83 39 2600
Power density 2.62W/cm
MEU1S1205ZC 12 5 200 5 7 21 45 100 79 83 43 3742
3.3V, 5V, and 12V input
MEU1S1209ZC 12 9 111 6 9 17 40 100 80 84 71 2732
MEU1S1212ZC 12 12 83 5 7 15 40 100 82 86 91 2438
3.3V, 5V, 9V, 12V and 15V output
MEU1S1215ZC 12 15 67 4 6 15 40 100 84 87 91 2980
Custom solutions available
INPUT CHARACTERISTICS
PCB mounting
Parameter Conditions Min. Typ. Max. Units
Footprint reduction of over 26% from
Continuous operation, 3.3V input types 2.97 3.3 3.63
previous generations of 1W DC/DCs
Voltage range Continuous operation, 5V input types 4.5 5.0 5.5 V
Continuous operation, 12V input types 10.8 12.0 13.2
DESCRIPTION
3.3V & 5V Input types 3 15
Reected ripple current mA p-p
The MEU1 series is a new range of ultra miniature 12V Input types 5 15
through hole 1W DC/DC converters, available in
a ZIP style pinout. The MEU1 series offers 1W
OUTPUT CHARACTERISTICS
of available output power over the industrial
Parameter Conditions Min. Typ. Max. Units
temperature range of -40C to 85C. They are
Rated Power TA=-40C to 85C 1.0 W
ideally suited for providing local supplies on
Voltage Set Point Accuracy See tolerance envelope
control system boards.
0303 1.0 1.25
Line regulation High VIN to low VIN %/%
With the added benet of 1kVDC galvanic
All other types 1.0 1.2
isolation to reduce switching noise and allows
the device to be congured to provide an isolated
ISOLATION CHARACTERISTICS
negative rail in systems where only positive rails
Parameter Conditions Min. Typ. Max. Units
exist.
Isolation test voltage Flash tested for 1 second 1000 VDC
Resistance Viso= 1000VDC 10 G
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency 85 kHz
1. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load.
All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied.
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KDC_MEU1.C02 Page 1 of 8
Nominal Input Voltage
Output Voltage
Output Current
Load Regulation (Typ.)
Load Regulation (Max.)
Ripple & Noise (Typ.)
Ripple & Noise (Max.)
Input Current at Rated Load
Efciency (Min.)
Efciency (Typ.)
Isolation Capacitance (Typ.)
1
MTTFMEU1 Series
Isolated 1W Single Output DC/DC Converters
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds 260C
Input voltage VIN, MEU1S03 types 5.5V
Input voltage VIN, MEU1S05 types 7V
Input voltage VIN, MEU1S12 types 15V
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specication All output types -40 85
Storage -50 125
C
MEU1S03 30
Case Temperature above ambient
All other types 25
Cooling Free air convection
TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading and set point accuracy.
MEU1S0303ZC MEU1S0305ZC
+11%
+10%
+6%
+6%
0.5%
+1%
-6%
-4.5%
100 100
10 25 50 75 10 25 50 75
Output Load Current (%) Output Load Current (%)
MEU1S0309ZC MEU1S0312ZC
+13%
+11%
+5%
+4%
0.5%
0%
-3.5% -3%
10 25 50 75 100 100
10 25 50 75
Output Load Current (%)
Output Load Current (%)
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KDC_MEU1.C02 Page 2 of 8
Output Voltage
Output Voltage
Output Voltage Output Voltage