Model Selection Guide

Mechanical Notes:

in inches (mm)

Notes:

1. When measuring output ripple, it is recommended that an external 1.0 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 4.7 µF capacitors will reduce the output ripple. The maximum

rms value of the output ripple is 10 mV.

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

3. The maximum sink current at the on/off pin (pin 4) during a logic low is 100 µA. The maximum allowable

leakage current of a switch connected to the on/off pin (Pin 4) at logic high (2.5V to 100V) is 5 µA. If the on/

off pin (Pin 4) is left open, the unit operates. If it is grounded, the unit will shut off.

4. Operation at no-load will not damage these units. However, they may not meet all specifications.

5. 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.

6. 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 33 µF is recommended for 24V input models and a 10 µF for 48V units.

7. 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.

Heatsink Notes:

range by approximately 10°C.

MicroPower Direct

We Power Your Success - For Less!

292 Page Street Ste D Stoughton, MA 02072

•

TEL: (781) 344-8226

•

FAX: (781) 344-8481

•

E-Mail: sales@micropowerdirect.com

A simple external circuit may be used to adjust

the converter output. To adjust the output DOWN,

connect a 5%, 3W resistor between the plus output

pin and the Vout trim pin. To adjust the output UP,

connect a 5%, 3W resistor between the minus

output pin and the Vout trim pin. To calculate the

correct resistor value use:

UP

Radj =

(33 x Vout) - (30 x Vadj)

Vadj - Vout

Down

Radj =

(36.667 x Vout) - (33 x Vout)

Vout - Vadj

For UP/Down trimming capability, connect a 10

kW potentiometer between the plus and minus

outputs with the wiper arm connected to the

Vout trim pin.

Pin

Single

Dual

Pin

Single

Dual

1

+Vin

+Vin

6

+Vout

Comm.

2

-Vin

-Vin

7

-Vout

-Vout

4

ON/OFF ON/OFF

8

Trim

Trim

5

No Pin

+Vout

Pin Connections

Model

Number

Input

Output

Over

Voltage

Protection

(VDC)

Efficiency

(%, Typ)

Capacitive

Load

(µF Max)

Fuse Rating

Slow-Blow

(mA)

Voltage

(VDC)

Current

(mA, Max)

Current

(mA, Min)

Nominal

Range

Full-Load No-Load

F2501RU

24

10.0 - 40.0

922

20

3.3

5,500

400.0

3.9

82

1,000

5,000

F2502RU

24

10.0 - 40.0

1,225

20

5.0

5,000

350.0

6.8

85

1,000

5,000

F2503RU

24

10.0 - 40.0

1,404

20

12.0

2,500

166.0

15.0

89

1,000

5,000

F2504RU

24

10.0 - 40.0

1,404

20

15.0

2,000

133.0

18.0

89

1,000

5,000

F2505RU

24

10.0 - 40.0

1,404

20

±12.0

±1,250

±83.0

±15.0

89

±330

5,000

F2506RU

24

10.0 - 40.0

1,404

20

±15.0

±1,000

±65.0

±18.0

89

±330

5,000

F2511RU

48

18.0 - 75.0

461

10

3.3

5,500

400.0

3.9

82

1,000

3,000

F2512RU

48

18.0 - 75.0

613

10

5.0

5,000

350.0

6.8

85

1,000

3,000

F2513RU

48

18.0 - 75.0

702

10

12.0

2,500

166.0

15.0

89

1,000

3,000

F2514RU

48

18.0 - 75.0

702

10

15.0

2,000

133.0

18.0

89

1,000

3,000

F2515RU

48

18.0 - 75.0

702

10

±12.0

±1,250

±83.0

±15.0

89

±330

3,000

F2516RU

48

18.0 - 75.0

702

10

±15.0

±1,000

±65.0

±18.0

89

±330

3,000

Mechanical Dimensions

External Trim

Derating Curves

For Heatsink Option, add suffix “H” to model number (i.e. F2503RU-H)

www.micropowerdirect.com