Model Selection Guide

Mechanical Dimensions

MicroPower Direct

www.micropowerdirect.com

232 Tosca Drive 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

Mechanical Notes:

• All dimensions are typical in inches (mm)

• Tolerance x.xx = ±0.01 (±0.25)

• Leads are tin plated for improved solderability.

Notes:

1. 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 single

output units and from each output to common for dual output units. For noise

sensitive applications, the use of 1.5 μF capacitors will reduce the output

ripple.

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

change of 50% 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 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 5V input units a 2.2 μF

is recommended, for 12V input units, a 1.0 μF; and for 24V & 48V units a

0.47 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.

Pin Connections

Single Output

Dual Output

470 μF Max

±220 μF Max

Capacitive Load

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

A201RI

5

4.75 - 5.25

666

100

70

5.0

400

0.0

60

1,000

A202RI

5

4.75 - 5.25

628

100

70

12.0

165

0.0

63

1,000

A203RI

5

4.75 - 5.25

633

100

70

15.0

133

0.0

63

1,000

A204RI

5

4.75 - 5.25

642

100

70

±12.0

±83

±0.0

62

1,000

A205RI

5

4.75 - 5.25

639

100

70

±15.0

±66

±0.0

62

1,000

A211RI

12

10.8 - 13.2

277

50

30

5.0

400

0.0

60

750

A212RI

12

10.8 - 13.2

262

50

30

12.0

165

0.0

63

750

A313RI

12

10.8 - 13.2

397

50

30

15.0

200

0.0

63

750

A214RI

12

10.8 - 13.2

268

50

30

±12.0

±83

±0.0

62

750

A315RI

12

10.8 - 13.2

403

50

30

±15.0

±100

±0.0

62

750

A221RI

24

21.6 - 26.4

138

25

15

5.0

400

0.0

60

350

A222RI

24

21.6 - 26.4

131

25

15

12.0

165

0.0

63

350

A323RI

24

21.6 - 26.4

198

25

15

15.0

200

0.0

63

350

A224RI

24

21.6 - 26.4

134

25

15

±12.0

±83

±0.0

62

350

A325RI

24

21.6 - 26.4

202

25

15

±15.0

±100

±0.0

62

350

A231RI

48

43.2 - 52.8

69

15

10

5.0

400

0.0

60

135

A232RI

48

43.2 - 52.8

66

15

10

12.0

165

0.0

63

135

Pin

Single

Dual

1, 2

+Vin

+Vin

10, 11

NC

Common

12

-Vout

NC

13

+Vout

-Vout

14

NC

NC

15

NC

+Vout

23, 24

-Vin

-Vin

NC: No Connection

Derating Curve