Model Selection Guide

Mechanical Dimensions

MicroPower Direct

www.micropowerdirect.com

232 Tosca Drive Stoughton, MA 02072

■

TEL: (781) 344-8226

■

FAX: (781) 344-8481

■

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

A201R

5

4.5 - 5.5

800

80

80

5.0

400

0.0

50

1,500

A202R

5

4.5 - 5.5

730

80

80

12.0

165

0.0

54

1,500

A203R

5

4.5 - 5.5

690

80

80

15.0

133

0.0

57

1,500

A204R

5

4.5 - 5.5

740

80

80

±12.0

±83

±0.0

53

1,500

A205R

5

4.5 - 5.5

740

80

80

±15.0

±66

±0.0

51

1,500

A211R

12

10.8 - 13.2

330

40

30

5.0

400

0.0

50

700

A212R

12

10.8 - 13.2

295

40

30

12.0

165

0.0

56

700

A213R

12

10.8 - 13.2

265

40

30

15.0

133

0.0

62

700

A214R

12

10.8 - 13.2

280

40

30

±12.0

±83

±0.0

59

700

A215R

12

10.8 - 13.2

280

40

30

±15.0

±66

±0.0

59

700

A221R

24

21.6 - 26.4

163

20

15

5.0

400

0.0

51

350

A222R

24

21.6 - 26.4

135

20

15

12.0

165

0.0

61

350

A223R

24

21.6 - 26.4

135

20

15

15.0

133

0.0

61

350

A224R

24

21.6 - 26.4

135

20

15

±12.0

±83

±0.0

61

350

A225R

24

21.6 - 26.4

135

20

15

±15.0

±66

±0.0

61

350

A231R

48

43.2 - 52.8

83

10

10

5.0

400

0.0

50

135

A232R

48

43.2 - 52.8

70

10

10

12.0

165

0.0

59

135

A233R

48

43.2 - 52.8

70

10

10

15.0

133

0.0

59

135

A234R

48

43.2 - 52.8

80

10

10

±12.0

±83

±0.0

51

135

A235R

48

43.2 - 52.8

80

10

10

±15.0

±66

±0.0

51

135

Pin

Single

Dual

1, 24

+Vin

+Vin

2, 23

NC

-Vout

3, 22

NC

Common

10, 15

-Vout

Common

11, 14

+Vout

+Vout

12, 13

-Vin

-Vin

NC: No Connection

Derating Curve