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LF103DI View Datasheet(PDF) - MicroPower Direct, LLC

Part NameDescriptionManufacturer
LF103DI High Isolation, 1W Dual Output SMT DC/DC Con vert ers MPD
MicroPower Direct, LLC MPD
LF103DI Datasheet PDF : 2 Pages
1 2
Model Selection Guide
Model
Number
Input
Output
Load
Voltage (VDC)
Current (mA) Voltage Current Current Regulation
Nominal Range Full-Load No-Load (VDC) (mA, Max) (mA, Min) (%, Max)
LF101DI
5
4.5 - 5.5
277
30
±5.0 ±100.0
±2.0
10
LF102DI
5
4.5 - 5.5
255
30 ±12.0
±42.0
±0.8
7
LF103DI
5
4.5 - 5.5
258
30 ±15.0
±34.0
±0.7
7
LF111DI
12 10.8 - 13.2 112
12
±5.0 ±100.0
±2.0
8
LF112DI
12 10.8 - 13.2 105
12 ±12.0
±42.0
±0.8
5
LF113DI
12 10.8 - 13.2 104
12 ±15.0
±34.0
±0.7
5
LF121DI
24 21.6 - 26.4 57
7
±5.0 ±100.0
±2.0
8
LF122DI
24 21.6 - 26.4 53
7
±12.0
±42.0
±0.8
5
LF123DI
24 21.6 - 26.4 53
7
±15.0
±34.0
±0.7
5
Notes:
1. Load regulation is measured for an output change of 20% to
100%.
2. When measuring output ripple, it is recommended that an external
0.33 µF ceramic capacitor be placed from the +Vout pin to the -Vout
pin. For noise sensitive applications, the use of 0.47 µF capacitors will
reduce the output ripple.
3. Operation at no-load will not damage these units. However, they
may not meet all specifications.
4. The converter should be connected to a low ac-impedance source.
An input source with a highly inductive impedance may affect the
stability of the converter. In applications where the converter output
loading is high and input power is supplied over long lines, it may
be necessary to use a capacitor on the input to insure start-up.
In this case, it is recommended that a low ESR (ESR <1.0Ω at 100 kHz)
capacitor be mounted close to the converter. For 5V input units a 2.2
µF is recommended, for 12V input units, a 1.0 µF, and for 24V input
units, a 0.47 µF.
5. Dual output units may be connected to provide a 10 VDC, 24 VDC or
30 VDC output. To do this, connect the load across the positive (+Vout)
and negative (-Vout) outputs and float the output common.
6. It is recommended that a fuse be used on the input of a power supply
for protection. See the table above for the correct rating.
Derating Curve
Efficiency
(%, Typ)
72
78
79
74
80
81
72
79
80
Fuse Rating
Slow-Blow
(mA)
500
500
500
200
200
200
100
100
100
Mechanical Dimensions
Pin Connections
Pin Description
Pin Description
1
-Vin
7
NA
2
+Vin
8
+Vout
3
NA
10
NA
5 Common
11
NA
6
-Vout
12
NA
NA = Not available for connection
Board Layout
Capacitive Load
±5V Out ±12 & ±15V Out
µF Max
µF Max
10
2.2
MicroPower
Notes:
All dimensions are typical in inches (mm)
Tolerance: Inches x.xx = ±0.01
Millimeters x.x = ±0.25
x.xx = ±0.13
Pin: ±0.002 (±0.05)
Direct Pin 1 is marked by a “dot” or indentation
on the unit. The curved edge of the case
indicates the Pin 1 side.
www.micropowerdirect.com
292 Page Street Ste D Stoughton, MA 02072 TEL: (781) 344-8226 FAX: (781) 344-8481 E-Mail: sales@micropowerdirect.com
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