CME Series
Isolated 0.75W Single Output Isolated DC/DC Converters
KDC_CME.B01 Page 1 of 11
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SELECTION GUIDE
Order Code
Nominal Input
Voltage
Output
Voltage
Output Current
Input Current
at Rated Load
Load Regulation
Ripple & Noise
Efficiency
Isolation
Capacitance
MTTF
1
V V mA mA
% mV p-p %
pF
MIL. Tel.
Typ. Max. Typ. Max. Min. Typ.
kHrs
CME0505DC 5 5 150
218 10 12 15 25 67 70
30 3400
CME0505SC 5 5 150
218 10 12 15 25 67 70
30 3400
CME0512SC 5 12 63 195 5 7 20 30 72 77 33 2200
3KVDC isolation options
CME0303S3C 3.3 3.3 227 300 9 12 15 25 66 73 30 1230
CME0305S3C 3.3 5 150 300 9 12 15 25 68 73 35 630
CME0505S3C 5 5 150 218 9 12 15 25 65 70 28 2400
CME0512S3C 5 12 63 200 5 7 10 15 70 75 30 630
Short Circuit Protection Options
CME0505SPC 5 5 150 195 7.5 9 11 25 74 76.5 22 2887 47047
CME0505DPC 5 5 150 195 7.5 9 11 25 74 76.5 22 2887 47047
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Continuous operation, 3.3V input types 2.97 3.3 3.63
V
Continuous operation, 5V input types 4.5 5.0 5.5
Input short circuit current Short circuit variants 95 mA
Input reflected ripple
current
3.3V input types 1.5 2
mA p-p
5V input types 2 2.5
Short circuit types 3 15
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power
2
TA=-40°C to 85°C, see derating graphs 0.75 W
Voltage Set Point Accuracy See tolerance envelope
Line regulation
High V
IN to low VIN ; Short circuit types 1.15 1.2
%/%
High V
IN to low VIN ; All other output types 1.0 1.2
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage
C Versions Flash tested for 1 second 1000
VDC
3C Versions Flash tested for 1 second 3000
Resistance Viso= 1000VDC 10 GΩ
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency
CME0505XC 120
kHzShort circuit types 91
All other types 135
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds 260°C
Input voltage V
IN, 3.3V input 5.5V
Input voltage V
IN, 5V input 7V
1. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load.
2. See derating curve.
All specifications typical at T
A=25°C, nominal input voltage and rated output current unless otherwise specified.
PRODUCT OVERVIEW
The CME series are a cost effective 0.75W DC/DC
converter series, in industry standard packages
with industry standard pinout, 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.
FEATURES
Short circuit protection options
UL 60950 recognised
Single Isolated output
1kVDC or 3kVDC option ‘Hi Pot Test’
Wide temperature performance at full
0.75W load -40°C to 85°C
Industry Standard Pinout
3.3V and 5V Inputs
3.3V, 5V & 12V outputs
Pin Compatible with LME, MEE1, MEE3,
NKE, NME, & NML series