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LF101SI View Datasheet(PDF) - MicroPower Direct, LLC

Part NameDescriptionManufacturer
LF101SI High Isolation, 1W Single Output SMT DC/DC Converters MPD
MicroPower Direct, LLC MPD
LF101SI 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)
LF101SI
5
4.5 - 5.5
281
30
5.0
200.0
4.0
10
LF102SI
5
4.5 - 5.5
258
30
12.0
84.0
1.5
7
LF103SI
5
4.5 - 5.5
258
30
15.0
67.0
1.0
7
LF111SI
12 10.8 - 13.2 117
12
5.0
200.0
4.0
8
LF112SI
12 10.8 - 13.2 106
12
12.0
84.0
1.5
5
LF113SI
12 10.8 - 13.2 104
12
15.0
67.0
1.0
5
LF121SI
24 21.6 - 26.4 58
7
5.0
200.0
4.0
8
LF122SI
24 21.6 - 26.4 53
7
12.0
84.0
1.5
5
LF123SI
24 21.6 - 26.4 53
7
15.0
67.0
1.0
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 sup-
plied 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. 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)
71
78
78
71
79
80
71
78
79
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
-Vout
11
NA
6
NA
12
NA
NA = Not available for connection
Board Layout
Capacitive Load
5V Out
µF Max
12 & 15V Out
µF Max
33
4.7
MicroPower
Direct
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)
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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