LF100EDI Seri
Lowest Cost, Dual Output
High Isolation 1W SMT
DC/DC Converters New Budget Saver!!
Electrical Specifications
Speci cations typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Speci cations subject to change without notice.
Input
Key Features:
Parameter Conditions Min. Typ. Max. Units
1W Output Power
3.3 VDC Input 3.0 3.3 3.6
Ultra-Miniature SMT Case
5 VDC Input 4.5 5.0 5.5 VDC
Dual Outputs Input Voltage Range
12 VDC Input 10.8 12.0 13.2
Low 0.24" Profile Reverse Polarity Input Current 1.0 A
3,000 VDC Isolation Input Filter Capacitor
>3.5 MHour MTBF Output
3.3, 5V, & 12V Inputs Parameter Conditions Min. Typ. Max. Units
LOWEST COST! Output Voltage Accuracy ±3.0 %
Output Voltage Balance Balanced Loads ±1.0 %
Line Regulation For Vin Change of 1% ±1.2 %
Load Regulation (Note 1) See Model Selection Guide
Ripple & Noise (20 MHz) (Note 2) 50 75 mV P - P
Temperature Coef cient ±0.01 ±0.02 %/ºC
Output Short Circuit Momentary (0.5 Sec.)
General
Parameter Conditions Min. Typ. Max. Units
Isolation Voltage 60 Seconds 3,000 VDC
Isolation Resistance 500 VDC 1,000 M
Isolation Capacitance 100 kHz, 1V 70 pF
Switching Frequency 100 150 200 kHz
Environmental
Parameter Conditions Min. Typ. Max. Units
Operating Temperature Range Ambient -40 +25 +85 ºC
Operating Temperature Range Case -25 +25 +90 ºC
Storage Temperature Range -55 +125 ºC
Cooling Free Air Convection
Humidity RH, Non-condensing 95 %
Physical
MicroPower Direct
Case Size 0.60 x 0.29 x 0.24 Inches (15.24 x 7.5 x 6.0 mm)
Case Material Non-Conductive Black Plastic (UL94-V0)
Weight 0.05 Oz (1.5g)
Reliability Specifications
Parameter Conditions Min. Typ. Max. Units
MTBF MIL HDBK 217F, 25ºC, Gnd Benign 3.5 MHours
Absolute Maximum Ratings
Parameter Conditions Min. Typ. Max. Units
3.3 VDC Input -0.7 7.0
Input Voltage Surge (1 Sec) 5 VDC Input -0.7 7.0 VDC
12 VDC Input -0.7 15.0
Lead Temperature 1.5 mm From Case For 10 Sec 300.0 ºC
Internal Power Dissipation All Models 450 mW
Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings.
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
Model Selection Guide
Input Output Load Fuse Rating
Model Efficiency
Voltage (VDC) Current (mA) Voltage Current Current Regulation Slow-Blow
Number (%, Typ)
Nominal Range Full-Load No-Load (VDC) (mA, Max) (mA, Min) (%, Max) (mA)
LF101EDI 5 4.5 - 5.5 277 30 ±5.0 ±100.0 ±10.0 12.0 72 500
LF102EDI 5 4.5 - 5.5 250 30 ±9.0 ±56.0 ±6.0 8.0 75 500
LF103EDI 5 4.5 - 5.5 256 30 ±12.0 ±42.0 ±5.0 8.5 78 500
LF104EDI 5 4.5 - 5.5 256 30 ±15.0 ±33.0 ±4.0 7.0 78 500
LF111EDI 12 10.8 - 13.2 112 15 ±5.0 ±100.0 ±10.0 12.0 74 200
LF112EDI 12 10.8 - 13.2 110 15 ±9.0 ±56.0 ±6.0 8.0 76 200
LF113EDI 12 10.8 - 13.2 105 15 ±12.0 ±42.0 ±5.0 8.5 79 200
LF114EDI 12 10.8 - 13.2 105 15 ±15.0 ±33.0 ±4.0 7.0 79 200
LF151EDI 3.3 3.0 - 3.6 452 55 ±5.0 ±100.0 ±10.0 12.0 67 750
LF152EDI 3.3 3.0 - 3.6 445 55 ±12.0 ±42.0 ±5.0 8.5 68 750
LF153EDI 3.3 3.0 - 3.6 432 55 ±15.0 ±33.0 ±4.0 7.0 70 750
Notes: Derating Curve
1. Output load regulation is speci ed for a load change of 10% to 100%.
2. When measuring output ripple, it is recommended that an external
0.33 F ceramic capacitor be placed from the +Vout pin to the -Vout
pin for single output units and from each output to common for dual
output units.
3. During operation, care must be taken not to exceed the speci ed
input range of the unit or to allow the output load to drop below the
speci ed minimum (10% of full load). Operating the unit under either
of these conditions could cause damage to the unit.
4. These converters are speci ed for operation without external compo-
nents. However, in some applications the addition of input/ouput ca-
pacitors will enhance stability and reduce output ripple. Recommended
capacitor values are:
Input Output
Vin Vout
Capacitor Capacitor
3.3 VDC 10.0 F 5 VDC 4.7 F
5 VDC 4.7 F 9 VDC 2.2 F
12 VDC 2.2 F 12 VDC 1.0 F
15 VDC 0.47 F Pin Connections
For applications requiring very low output noise levels, a simple LC lter Pin Description Pin Description
should be effective. 1 -Vin 7 NC
5. It is recommended that a fuse be used on the input of a power supply for
2 +Vin 8 +Vout
protection. See the Model Selection table above for the correct rating.
3 NC 10 NC
5 Common 11 NC
6 -Vout 12 NC
Board Layout NC = No Connection
Mechanical Dimensions
Notes:
All dimensions are typical in inches (mm)
Tolerance x.xx = ±0.01 (±0.25)
Pin 1 is marked by a "dot" or indentation on the unit
Leads are tin plated for improved solderability.
MicroPower Direct
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de