CMR Series
Isolated 0.75W Single and Dual Output Isolated DC/DC Converters
KDC_CMR.B01 Page 1 of 11
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SELECTION GUIDE
Order Code
Nominal Input
Voltage
Output
Voltage
Output
Current
Load
Regulation
Ripple &
Noise3
Input Current
at rated load
Efficiency
Isolation
Capacitance
MTTF1
VVmA %mV p-p mA %pF MIL. Tel.
Typ. Max Typ. Max. Min. Typ. kHrs
CMR100C 5 5 150 9 11 6 10 218 65 69 30 1850
CMR118C 24 5 150 6.8 10 8 15 46 65 70 60 1250
3kVDC Isolation Options
CMR0505SA3C 5 5 150 9 11 15 25 220 64 68 30 4240
CMR0512S3C 5 ±12 ±31 5 6 6.7 8 192 74 78 30 1560
CMR0515S3C 5 ±15 ±25 4 6 6.3 8.2 188 76 79 30 1060
CMR1215S3C 12 ±15 ±25 3 4.5 6.5 13 80 76 79 40 925
Short Circuit Protection Options
CMR100PC 5 5 150 7.5 9 10 25 200 73 75.5 22 3095 61060
CMR0505SAP3C45 5 150 7.5 9 20 40 195 74 76 20 2680 56444
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Continuous operation, 5V input types 4.5 5 5.5
VContinuous operation, 12V input types 10.8 12 13.2
Continuous operation, 24V input types 21.6 24 26.4
Input short circuit current Short circuit variants 95 mA
Input reflected ripple
current
CMR100PC 2 15
mA
p-p
CMR0505SAP3C 5 15
5V & 12V input types 2.6 4
24V input types 10 15
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power2TA=-40°C to 85°C 0.75 W
Voltage Set Point Accuracy See tolerance envelope
Line regulation High VIN to low VIN ; Short circuit types 1.15 1.2 %/%
High VIN to low VIN ; All other output types 1.0 1.2
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation voltage C versions flash tested for 1 second 1000 VDC
3C versions flash tested for 1 minute 3000
Resistance Viso=1000VDC 10 GΩ
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds 260°C
5V input types 7V
12V input types 15V
24V input types 28V
1. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load.
2. See derating graph.
3. See ripple & noise characterisation method.
4. 3kVDC Isolation
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
FEATURES
Short circuit protection options
UL 60950 recognised
Single or Dual Isolated Outputs
1kVDC or 3kVDC options ‘Hi Pot Test’
Wide temperature performance at full
0.75W load -40°C to 85°C
Industry Standard Pinouts
5V, 12V and 24V Inputs
5V, 12V and 15V Outputs
Pin compatible with NMR, MER1, MMV,
MEV1, NMK, MEV3, NMV series.
DESCRIPTION
The CMR series are a cost effective 0.75W DC/DC
converter series, in an industry standard package
with industry standard pinouts, Popular input and
output voltages are available as a lower power
alternative to a 1W DC/DC converter. The galvanic
isolation allows the device to be configured to
provide an isolated negative rail in systems where
only positive rails exist. The wide temperature
range guarantees startup from –40°C and full
0.75 watt output at 85°C. For the short circuit
protected parts (PC) protection is continuous and
auto-resetting on removal of the short circuit.