DC-DCConverters 1
features
p Full2WattOutputPower
p PinCompatiblewithNMA
p 1kVDCIsolation
p DualOutputs
p SIP&DIPpackageStyles
p Efficiencyto80%
p PowerDensity1.42W/cm3
p 5V,12V,24V&48VInput
p 5V,9V,12V,and15VOutput
p Footprintfrom1.46cm2
p UL94V-0PackageMaterial
p NoHeatsinkRequired
p InternalSMDConstruction
p ToroidalMagnetics
p FullyEncapsulated
p NoExternalComponentsRequired
p MTTFupto1.8Millionhours
p PCBMounting
p CustomSolutionsAvailable
description
TheNMHSeriesofDC-DCConvertersoffer
thesmallestfootprintofanydual-output2
WattDC-DCConverter.Pincompatibility
withtheNMAseriesensuresminimaleffort
inupgradingdistributedpowersystems.
Thedevicesaresuitedtoanyapplication
whereadualrailsupplyisrequiredina
minimumofpcbspace.
NMHSERIES
Isolated2WDualOutput
pinconnections
14PinDIP(topview)
7PinSIP
VIN –V +V0V
14 11 9 8
17
GND NC
12 456
VIN GND –V0V+V
2 - NMH SERIES
absolute maximum ratings over operating free air* temperature range
Input voltage VIN NMH05 types . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Input voltage VIN NMH12 types . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Input voltage VIN NMH24 types . . . . . . . . . . . . . . . . . . . . . . . . . . 28V
Input voltage VIN NMH48 types . . . . . . . . . . . . . . . . . . . . . . . . . . 54V
Output power total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2W
Short-circuit duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1s
Isolation voltage (flash tested for 1 second) . . . . . . . . . . . . . . . . . 1000VDC
Operating free air temperature range . . . . . . . . . . . . . . . . . . . 0°C to 70°C1
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . --55°C to 150°C
Lead temperature 1.5mm from case for 10 seconds . . . . . . . . . . . . . . . 300°C
electrical specifications
(measured at TA=25°C, at nominal input voltage)
Input voltage range NMH05 types . . . . . . . . . . . . . . . . . . . . . . 5V 10%
Input voltage range NMH12 types . . . . . . . . . . . . . . . . . . . . . 12V 10%
Input voltage range NMH24 types . . . . . . . . . . . . . . . . . . . . . 24V 10%
Input voltage range NMH48 types . . . . . . . . . . . . . . . . . . . . . 48V 10%
Load voltage regulation (10% to 100% full load)
5V output types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15% max.
9V, 12V and 15V output types . . . . . . . . . . . . . . . . . . . . . . 10% max.
Line voltage regulation (10% to 100% full load) . . . . . . . . . . . . . 1.2%/1% of VIN
Output voltage accuracy . . . . . . . . . . . . . . . . . See tolerance envelope graph
Input reflected ripple (20MHz Band limited) . . . . . . . . . . . . . . 100mV p-p max.
Output ripple (20MHz Band limited) . . . . . . . . . . . . . . . . . 150mV p-p max.
Insulation resistance at 500VDC . . . . . . . . . . . . . . . . . . . . 1000M min.
Efficiency at full load, 5V output type . . . . . . . . . . . . . . . . . . . . . 65% min.
Efficiency at full load, 9V, 12V and 15V output type . . . . . . . . . . . . . . 70% min.
Temperature drift (VOUT) . . . . . . . . . . . . . . . . . . . . . . 0.01% per °C max.
Temperature rise above ambient at full load . . . . . . . . . . . . . . . . 25°C max.
Weight (typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.35 grams
Switching frequency at full load (typical) . . . . . . . . . . . . . . . . . . . . . 75kHz
No load power consumption (typical) . . . . . . . . . . . . . . . . . . . . . 180mW
* Free air -- requires a minimum of 10mm air space around the component. 1 See derating curve.
NMH SERIES
Isolated 2W Dual Output
2
selection guide
5V, 12V, 24V and 48V input types
Part Number Output Voltage
(V)
Output Current
Each Output (mA)
Package
Style
NMHXX05D 5 200
1
NMHXX09D 9 111
NMHXX12D 12 83
NMHXX15D 15 67
NMHXX05S 5 200
2
NMHXX09S 9 111
NMHXX12S 12 83
NMHXX15S 15 67
typical isolation capacitance (pF)
Part Number Output Voltage (V)
05 09 12 15
NMH05XXX 29 37 41 44
NMH12XXX 43 57 73 81
NMH24XXX 42 64 81 98
NMH48XXX 40 60 79 94
Note : All data taken at TA=25°C.
NMH SERIES
Isolated 2W Dual Output
2 - NMH SERIES
DC-DC Converters 3
typical characteristics
Note : All data taken at TA=25°C.
NMH SERIES
Isolated 2W Dual Output
NMH05, 12, 24 and 48 series
temperature test (under full load)
See application notes on page 2-132
tolerance envelope temperature derating graph
4
typical characteristics
Note : All data taken at TA=25°C.
NMH SERIES
Isolated 2W Dual Output
NMH05 series spectrum analysis (RBW=100kHz)
NMH12 series spectrum analysis (RBW=100kHz)
2 - NMH SERIES
DC-DC Converters 5
mean time to failure (MTTF) in thousands of hours
Part Number --25°C 25°C 70°C
NMH0505 1874 1568 1309
NMH0509 771 660 569
NMH0512 391 337 294
NMH0515 215 186 162
NMH1205 564 484 419
NMH1209 394 340 296
NMH1212 263 228 199
NMH1215 170 147 128
NMH2405 1080 917 782
NMH2409 569 489 423
NMH2412 319 276 241
NMH2415 185 160 140
NMH4805 236 204 178
NMH4809 197 171 149
NMH4812 155 134 118
NMH4815 115 99 87
Note : MTTF figures derived from hybrid model of MIL-HDBK-217F.
NMH SERIES
Isolated 2W Dual Output
6
outline dimensions
14 Pin DIP package style 7 Pin SIP package style
recommended footprint details
All pins on a 2.54mm pitch.
All dimensions in mm XX.X 0.50, XX.XX 0.25
NMH SERIES
Isolated 2W Dual Output
21
2 - NMH SERIES
DC-DC Converters 7