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LF122DI Datenblatt(PDF) 2 Page - MicroPower Direct, LLC

Teilenummer LF122DI
Bauteilbeschribung  High Isolation, 1W Dual Output SMT DC/DC Converters
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Hersteller  MPD [MicroPower Direct, LLC]
Direct Link  http://www.micropowerdirect.com
Logo MPD - MicroPower Direct, LLC

LF122DI Datenblatt(HTML) 2 Page - MicroPower Direct, LLC

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Model Selection Guide
Mechanical Dimensions
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.
Model
Number
Input
Output
Load
Regulation
(%, Max)
Efficiency
(%, Typ)
Fuse Rating
Slow-Blow
(mA)
Voltage (VDC)
Current (mA)
Voltage
(VDC)
Current
(mA, Max)
Current
(mA, Min)
Nominal
Range
Full-Load
No-Load
LF101DI
5
4.5 - 5.5
277
30
±5.0
±100.0
±2.0
10
72
500
LF102DI
5
4.5 - 5.5
255
30
±12.0
±42.0
±0.8
7
78
500
LF103DI
5
4.5 - 5.5
258
30
±15.0
±34.0
±0.7
7
79
500
LF111DI
12
10.8 - 13.2
112
12
±5.0
±100.0
±2.0
8
74
200
LF112DI
12
10.8 - 13.2
105
12
±12.0
±42.0
±0.8
5
80
200
LF113DI
12
10.8 - 13.2
104
12
±15.0
±34.0
±0.7
5
81
200
LF121DI
24
21.6 - 26.4
57
7
±5.0
±100.0
±2.0
8
72
100
LF122DI
24
21.6 - 26.4
53
7
±12.0
±42.0
±0.8
5
79
100
LF123DI
24
21.6 - 26.4
53
7
±15.0
±34.0
±0.7
5
80
100
Pin
Description
Pin
Description
1-Vin
7
NA
2
+Vin
8
+Vout
3NA
10
NA
5
Common
11
NA
6
-Vout
12
NA
NA = Not available for connection
Pin Connections
±5V Out
µF Max
±12 & ±15V Out
µF Max
10
2.2
Capacitive Load
Board Layout
Derating Curve
MicroPower Direct
www.micropowerdirect.com
292 Page Street Ste D Stoughton, MA 02072
TEL: (781) 344-8226
FAX: (781) 344-8481
E-Mail: sales@micropowerdirect.com
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.


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