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 each output to common.

For noise sensitive applications, the use of 1.5 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 4.7 μF.

5. The outputs of these 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) ouputs and float the ouput

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.

Notes:

Pin Connections

Output

±5 VDC

±12 & ±15 VDC

μF Max

±10 μF

±4.7 μF

Capacitive Load

Board Layout

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

LF201D

5

4.5 - 5.5

519

60

±5.0

±200.0

±4.0

10

77

1,000

LF202D

5

4.5 - 5.5

504

60

±12.0

±83.0

±1.5

7

79

1,000

LF203D

5

4.5 - 5.5

501

60

±15.0

±66.0

±1.0

7

79

1,000

LF212D

12

10.8 - 13.2

202

30

±12.0

±83.0

±1.5

5

82

500

LF213D

12

10.8 - 13.2

201

30

±15.0

±66.0

±1.0

5

82

500

LF222D

24

21.6 - 26.4

102

15

±12.0

±83.0

±1.5

5

81

200

LF223D

24

21.6 - 26.4

100

15

±15.0

±66.0

±1.0

5

82

200

Pin

Description

Pin

Description

1

-Vin

6

No Pin

2

+Vin

7

+Vout

3

No Pin

8

No Pin

4

Common

9

No Pin

5

-Vout

10

NA

NA = Not for electrical connection

MicroPower Direct

www.micropowerdirect.com

292 Page Street Ste D Stoughton, MA 02072

•

TEL: (781) 344-8226

•

FAX: (781) 344-8481

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E-Mail: sales@micropowerdirect.com

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