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www.murata-ps.com
SELECTION GUIDE
MEU1 Series
Isolated 1W Single Output DC/DC Converters
Nominal Input Voltage Output Voltage Output Current
Load Regulation (Typ.) Load Regulation (Max.) Ripple & Noise (Typ.) Ripple & Noise (Max.) Input Current at Rated Load
Efficiency (Min.) Efficiency (Typ.) Isolation Capacitance (Typ.)
MTTF1
Order Code
FEATURES
UL60950 recognised Single isolated output
1kVDC isolation Efficiency up to 87% Wide temperature performance at full
1 watt load, –40°C to 85°C
Power density 2.62W/cm3 3.3V, 5V, and 12V input
3.3V, 5V, 9V, 12V and 15V output Custom solutions available PCB mounting Footprint reduction of over 26% from previous generations of 1W DC/DC’s
DESCRIPTION
The MEU1 series is a new range of ultra miniature through hole 1W DC/DC converters, available in a ZIP style pinout. The MEU1 series offers 1W of available output power over the industrial temperature range of -40ºC to 85ºC. They are ideally suited for providing local supplies on control system boards. With the added benefit of 1kVDC galvanic isolation to reduce switching noise and allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist.
MEU1S0303ZC MEU1S0305ZC MEU1S0309ZC MEU1S0312ZC MEU1S0315ZC MEU1S0503ZC MEU1S0505ZC MEU1S0509ZC MEU1S0512ZC MEU1S0515ZC MEU1S1205ZC MEU1S1209ZC MEU1S1212ZC MEU1S1215ZC
V V mA
%
3.3 3.3 303 11 14
3.3 5 200 9 12
3.3 9 111 10 13
3.3 12 83 9 12
3.3 15 67 8 10
5 3.3 303 9 12
5 5 200 7 9
5 9 111 9 12
5 12 83 8 10
5 15 67 6 8
12 5 200 5 7
12 9 111 6 9
12 12 83 5 7
12 15 67 4 6
mVp-p mA
%
27 50 385 73 76
21 45 373 76 79
16 40 376 75 79
15 40 369 77 81
14 40 371 77 81
26 50 249 74 77
19 45 244 78 81
17 40 245 77 81
17 40 239 78 83
12 35 239 78 83
21 45 100 79 83
17 40 100 80 84
15 40 100 82 86
15 40 100 84 87
pF kHrs
28 3084 30 3125 34 3960 40 3343 33 3140 29 2762 34 3354 47 2952 45 3317 39 2600 43 3742 71 2732 91 2438 91 2980
INPUT CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Continuous operation, 3.3V input types 2.97
3.3
3.63
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
Reflected ripple current
3.3V & 5V Input types 12V Input types
3 15 mA p-p
5 15
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated Power
TA=-40°C to 85°C
Voltage Set Point Accuracy See tolerance envelope
Line regulation
High VIN to low VIN
Min. Typ. Max. 1.0
Units W
0303 All other types
1.0 1.25 1.0 1.2
%/%
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 second
Resistance
Viso= 1000VDC
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
Min. Typ. Max. Units 1000 VDC 10 GΩ
Min. Typ. Max. Units 85 kHz
1. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise sp.