Model Selection Guide

Model

Number

Input

Capcitive

Load

(µF, Max)

Efficiency

(%, Typ)

Fuse Rating

Slow-Blow

(mA)

Voltage

(VDC)

Current

(mA, Max)

Current

(mA, Min)

Nominal

Range

Full-Load No-Load

D301RU

12

4.5 - 18.0

260

60

3.3

700.0

175.0

1,760

74

1,500

D302RU

12

4.5 - 18.0

320

60

5.0

600.0

150.0

1,000

78

1,500

D303RU

12

4.5 - 18.0

313

60

12.0

250.0

63.0

170

80

1,500

D304RU

12

4.5 - 18.0

313

60

15.0

200.0

50.0

110

80

1,500

D305RU

12

4.5 - 18.0

313

60

±5.0

±300.0

±75.0

±470

80

1,500

D306RU

12

4.5 - 18.0

313

60

±12.0

±125.0

±31.0

±100

80

1,500

D307RU

12

4.5 - 18.0

313

60

±15.0

±100.0

±25.0

±47

80

1,500

D311RU

24

9.0 - 36.0

128

25

3.3

700.0

175.0

1,760

75

700

D312RU

24

9.0 - 36.0

156

25

5.0

600.0

150.0

1,000

80

700

D313RU

24

9.0 - 36.0

154

25

12.0

250.0

63.0

170

81

700

D314RU

24

9.0 - 36.0

154

25

15.0

200.0

50.0

110

81

700

D315RU

24

9.0 - 36.0

158

25

±5.0

±300.0

±75.0

±470

79

700

D316RU

24

9.0 - 36.0

156

25

±12.0

±125.0

±31.0

±100

80

700

D317RU

24

9.0 - 36.0

154

25

±15.0

±100.0

±25.0

±47

81

700

D321RU

48

18.0 - 75.0

65

15

3.3

700.0

175.0

1,760

74

350

D322RU

48

18.0 - 75.0

79

15

5.0

600.0

150.0

1,000

79

350

D323RU

48

18.0 - 75.0

79

15

12.0

250.0

63.0

170

79

350

D324RU

48

18.0 - 75.0

79

15

15.0

200.0

50.0

110

79

350

D325RU

48

18.0 - 75.0

79

15

±5.0

±300.0

±75.0

±470

79

350

D326RU

48

18.0 - 75.0

79

15

±12.0

±125.0

±31.0

±100

79

350

D327RU

48

18.0 - 75.0

78

15

±15.0

±100.0

±25.0

±47

80

350

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Mechanical Dimensions

Notes:

1. When measuring output ripple, it is recommended that an external 0.47 µF ceramic 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.

2. Transient recovery is measured to within a 1% error band for a 75-100% load change.

3. An open collector switch (or equivalent) may be used to turn the unit on/off by controlling the voltage level at Pin 3. The maximum sink current at the on/off pin during a logic low is 1 mA. The maximum

allowable leakage current of a switch connected to the on/off pin is 1 mA. If the on/off pin (Pin 3) is left open, the unit operates.

4. No load operation will not damage these units, but they may not meet all spec’s. Recommended minimum load levels are given in the table above.

5. 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 Equivalent Series Resistance

(ESR <1.0

 at 100 kHz) capacitor be mounted close to the converter.A 3.3 µF is recommended for 12V input models and a 1.5 µF for 24 & 48V units.

6. Dual output units may be connected to provide a 10V, 24V, or 30 VDC output. To do this, connect the load across the +Vout and -Vout outputs and float the output common.

7. It is recommended that a fuse be used on the input of a power supply for protection. See the Model Selection table above for the correct rating.

Mechanical Notes:

MicroPower Direct

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292 Page Street Ste D Stoughton, MA 02072

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TEL: (781) 344-8226

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FAX: (781) 344-8481

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E-Mail: sales@micropowerdirect.com

Pin

Single

Dual

Pin

Single

Dual

1

-Vin

-Vin

6

+Vout

+Vout

2

+Vin

+Vin

7

-Vout

Common

3

Remote ON/OFF

8

NC

-Vout

5NC

NC

NC = No Connection

Pin Connections

Derating Curve