LF100ED Series
Lowest Cost, Dual Output
Ultra-Miniature 1W SMT
DC/DC Converters
Electrical Specifications
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications 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 Input Voltage Range 5 VDC Input 4.5 5.0 5.5 VDC
· UL Approved (File E245422) 12 VDC Input 10.8 12.0 13.2
· Dual Outputs Reverse Polarity Input Current 1.0 A
· Low 0.29" Profile Input Filter Capacitor
· 1,000 VDC Isolation Output
Parameter Conditions Min. Typ. Max. Units
· >3.5 MHour MTBF
Output Voltage Accuracy ±3.0 %
· 3.3V, 5V, & 12V Inputs
Output Voltage Balance Balanced Loads ±1.0 %
· LOWEST COST!
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 Coefficient ±0.03 %/ºC
Output Short Circuit Momentary (0.5 Sec.)
General
Parameter Conditions Min. Typ. Max. Units
Isolation Voltage 60 Seconds 1,000 VDC
Isolation Resistance 500 VDC 1,000 M
Isolation Capacitance 100 kHz, 1V 70 pF
Switching Frequency 100 kHz
Environmental
Parameter Conditions Min. Typ. Max. Units
Operating Temperature Range Ambient -40 +25 +85 ºC
Storage Temperature Range -55 +125 ºC
Cooling Free Air Convection
Humidity RH, Non-condensing 95 %
Physical
Case Size 0.60 x 0.29 x 0.24 Inches (15.24 x 7.5 x 6.0 mm)
MicroPower Direct Case Material Non-Conductive Black Plastic (UL94-V0)
292 Page Street
Suite D Weight 0.05 Oz (1.5g)
Stoughton, MA 02072 Reliability Specifications
USA Parameter Conditions Min. Typ. Max. Units
T: (781) 344-8226 MTBF MIL HDBK 217F, 25ºC, Gnd Benign 3.5 MHours
F: (781) 344-8481 Safety Standards UL 1950, EN 60950, IEC 60950
E: sales@micropowerdirect.com Safety Approvals UL, cUL; File No. E245422
W: www.micropowerdirect.com
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 260.0 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 · D-85716 Unterschleißheim
Telefon (089) 32 15 01 - 0 · Telefax (089) 32 15 01 - 11
info@compumess.de · 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)
LF101ED 5 4.5 - 5.5 277 30 ±5.0 ±100.0 ±10.0 12.0 72 500
LF102ED 5 4.5 - 5.5 250 30 ±9.0 ±56.0 ±6.0 8.0 75 500
LF103ED 5 4.5 - 5.5 256 30 ±12.0 ±42.0 ±5.0 8.5 78 500
LF104ED 5 4.5 - 5.5 253 30 ±15.0 ±33.0 ±4.0 7.0 79 500
LF111ED 12 10.8 - 13.2 112 15 ±5.0 ±100.0 ±10.0 12.0 74 200
LF112ED 12 10.8 - 13.2 110 15 ±9.0 ±56.0 ±6.0 8.0 76 200
LF113ED 12 10.8 - 13.2 105 15 ±12.0 ±42.0 ±5.0 8.5 78 200
LF114ED 12 10.8 - 13.2 104 15 ±15.0 ±33.0 ±4.0 7.0 79 200
LF151ED 3.3 3.0 - 3.6 452 55 ±5.0 ±100.0 ±10.0 12.0 67 750
LF152ED 3.3 3.0 - 3.6 445 55 ±12.0 ±42.0 ±5.0 8.5 68 750
LF153ED 3.3 3.0 - 3.6 432 55 ±15.0 ±33.0 ±4.0 7.0 70 750
Notes:
1. Output load regulation is specified for a load change of 20% to 100%.
Derating Curve
2. When measuring output ripple, it is recommended that an external 0.33 µF ce-
ramic 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 specified input range
of the unit or to allow the output load to drop below the specified minimum
(10% of full load). Operating the unit under either of these conditions could
cause damage to the unit.
4. These converters are specified for operation without external components. How-
ever, in some applications the addition of input/output capacitors will enhance
stability and reduce output ripple. Recommended capacitor values are:
Input Output
Vin Vout
Capacitor Capacitor
5 VDC 4.7 µF 5 VDC 4.7 µF
12 VDC 2.2 µF 9 VDC 2.2 µF
24 VDC 1.0 µF 12 VDC 1.0 µF
15 VDC 0.47 µF Pin Connections
For applications requiring very low output noise Pin Description Pin Description Recommended Solder Profile
levels, a simple LC filter should be effective. 1 -Vin 6 NC
5. It is recommended that a fuse be used on the 2 +Vin 7 +Vout
input of a power supply for protection. See the
3 NC 8 NC
Model Selection table above for the correct
rating. 4 Common 9 NC
5 -Vout 10 NC
Mechanical Dimensions NC = No Connection
Board Layout
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
MicroPower Direct
www.micropowerdirect.com GmbH · Lise-Meitner-Str. 1 · D-85716 Unterschleißheim
CompuMess Elektronik
292 Page Street Ste D Stoughton, MA 02072 · Telefon (089) 32 15 01 - 0 · Telefax (089) 32· E-Mail: sales@micropowerdirect.com
TEL: (781) 344-8226 · FAX: (781) 344-8481 15 01 - 11
info@compumess.de · www.compumess.de · www.netzteile.de