Model Selection Guide

Mechanical Dimensions

Mechanical Notes:

Derating Curve

Pin

Single

Dual

2, 3

-Vin

-Vin

9

NC

Common

10

NC

NC

11

NC

-Vout

14

+Vout

+Vout

15

NC

NC

16

-Vout

Common

22, 23

+Vin

+Vin

NC: No Connection

Pin Connections

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

A301ERU

24

9.0 - 36.0

169

16

10

3.3

909

90.0

74

750

A302ERU

24

9.0 - 36.0

164

16

10

5.0

600

60.0

76

750

A303ERU

24

9.0 - 36.0

157

16

10

12.0

250

25.0

80

750

A304ERU

24

9.0 - 36.0

157

16

10

15.0

200

20.0

80

750

A305ERU

24

9.0 - 36.0

164

16

10

±5.0

±300

±30.0

76

750

A306ERU

24

9.0 - 36.0

157

16

10

±12.0

±125

±12.0

80

750

A307ERU

24

9.0 - 36.0

157

16

10

±15.0

±100

±10.0

80

750

A311ERU

48

18.0 - 72.0

84

8

10

3.3

909

90.0

74

500

A312ERU

48

18.0 - 72.0

80

8

10

5.0

600

60.0

78

500

A313ERU

48

18.0 - 72.0

78

8

10

12.0

250

25.0

80

500

A314ERU

48

18.0 - 72.0

78

8

10

15.0

200

20.0

80

500

A315ERU

48

18.0 - 72.0

82

8

10

±5.0

±300

±30.0

76

500

A316ERU

48

18.0 - 72.0

78

8

10

±12.0

±125

±12.0

80

500

A317ERU

48

18.0 - 72.0

78

8

10

±15.0

±100

±10.0

80

500

Notes:

1. Exceeding the input range by a significant margin may damage the units. For 24V input the input voltage

should not exceed 40V; for 48V models it should not exceed 80V.

2. Voltage accuracy for the negative output on Dual output models is typically ±3% with a max of ±5%.

3. Maximum ouput noise for dual output units is 150 mV P-P. When measuring output ripple, it is recom-

mended that an external 0.33 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.

4. The optional metal package is nickel plated steel. The dimensions of the metal package are 1.25 x 0.80 x 0.39

Inches (31.8 x 20.3 x 10.0 mm).

5. These units should not be operated with a load under the specified minimum. Operation at no-load will

increase ripple significantly and may cause damage to the unit.

6. These converters are specified for operation without external components. However, in some applications

the addition of input/output capacitors will enhance stability and reduce output ripple. Recommended

capacitor values are:

Vin: 10 µF - 47 µF

Vout: 10 µF/100 mA

For applications requiring very low output noise levels, a simple LC filter

should be effective.

7. The maximum load capacitance is:

Vout

Maximum

Load

Capacitance

Vout

Maximum

Load

Capacitance

3.3 VDC

2,200 µF

±5 VDC

2,200 µF

5 VDC

1,000 µF

±12 VDC

1,000 µF

12 VDC

470 µF

±15 VDC

470 µF

15 VDC

330 µF

8. 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.

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

www.micropowerdirect.com

For models with a metal case, add an

“M” to the model number (ie: A315ERUM)