MicroPower Direct

www.micropowerdirect.com

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

Model Selection Guide

Mechanical Dimensions

Mechanical Notes:

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. For noise sensitive applications, the use of 3.3

μF capacitors will reduce the output ripple.

2. Transient recovery is measured to within a 1% error band for a

load step change of 75% to 100%.

3. Operation at no-load will not damage these units. However, they

may not meet all specifications.

4. 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.

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 ESR (ESR <1.0Ω at 100

kHz) capacitor be mounted close to the converter. For 24V input

units a 4.7 μF is recommended and for 48V units a 2.2 μF.

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

Model

Number

Input

Output

Efficiency

(%, Typ)

Fuse Rating

Slow-Blow

(mA)

Voltage (VDC)

Current (mA)

Reflected

Ripple

Current

(mA, Typ)

Voltage

(VDC)

Current

(mA, Max)

Current

(mA, Min)

Nominal

Range

Full-Load

No-Load

A401RU

24

9.0 -36.0

161

20

5

3.3

900.0

90.0

77

1,000

A402RU

24

9.0 -36.0

170

20

5

5.0

660.0

66.0

81

1,000

A403RU

24

9.0 -36.0

201

20

5

12.0

333.0

33.0

83

1,000

A404RU

24

9.0 -36.0

201

20

5

15.0

267.0

27.0

83

1,000

A405RU

24

9.0 -36.0

156

20

5

±5.0

±300.0

±30.0

80

1,000

A406RU

24

9.0 -36.0

201

20

5

±12.0

±167.0

±17.0

83

1,000

A407RU

24

9.0 -36.0

201

20

5

±15.0

±133.0

±13.0

83

1,000

A411RU

48

18.0 - 75.0

79

10

5

3.3

900.0

90.0

78

500

A412RU

48

18.0 - 75.0

84

10

5

5.0

660.0

66.0

82

500

A413RU

48

18.0 - 75.0

98

10

5

12.0

333.0

33.0

85

500

A414RU

48

18.0 - 75.0

98

10

5

15.0

267.0

27.0

85

500

A415RU

48

18.0 - 75.0

76

10

5

±5.0

±300.0

±30.0

82

500

A416RU

48

18.0 - 75.0

98

10

5

±12.0

±167.0

±17.0

85

500

A417RU

48

18.0 - 75.0

98

10

5

±15.0

±133.0

±13.0

85

500

Pin

Single

Dual

2, 3

-Vin

-Vin

9

No Pin

Common

11

NC

-Vout

14

+Vout

+Vout

16

-Vout

Common

22, 23

+Vin

+Vin

NC: No Connection

Pin Connections

Single Output

μF Max

Dual Output

μF Max

3,000

±680

Capacitive Load