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 75-100% load change.

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. No load operation will not damage these units, but they may not meet all spec’s.

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 imped-

ance 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.

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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

F2501RW

12

9.0 - 18.0

1,867

40

3.3

5,500

400.0

3.9

81

470

6,000

F2502RW

12

9.0 - 18.0

2,480

40

5.0

5,000

350.0

6.8

84

470

6,000

F2503RW

12

9.0 - 18.0

2,841

40

12.0

2,500

166.0

15.0

88

470

6,000

F2504RW

12

9.0 - 18.0

2,841

40

15.0

2,000

133.0

18.0

88

470

6,000

F2505RW

12

9.0 - 18.0

2,841

40

±12.0

±1,250

±83.0

±15.0

88

±220

6,000

F2506RW

12

9.0 - 18.0

2,841

40

±15.0

±1,000

±65.0

±18.0

88

±220

6,000

F2511RW

24

18.0 - 36.0

922

20

3.3

5,500

400.0

3.9

82

470

3,000

F2512RW

24

18.0 - 36.0

1,225

20

5.0

5,000

350.0

6.8

85

470

3,000

F2513RW

24

18.0 - 36.0

1,404

20

12.0

2,500

166.0

15.0

89

470

3,000

F2514RW

24

18.0 - 36.0

1,404

20

15.0

2,000

133.0

18.0

89

470

3,000

F2515RW

24

18.0 - 36.0

1,404

20

±12.0

±1,250

±83.0

±15.0

89

±220

3,000

F2516RW

24

18.0 - 36.0

1,404

20

±15.0

±1,000

±65.0

±18.0

89

±220

3,000

F2521RW

48

36.0 - 75.0

461

10

3.3

5,500

400.0

3.9

82

470

1,500

F2522RW

48

36.0 - 75.0

613

10

5.0

5,000

350.0

6.8

85

470

1,500

F2523RW

48

36.0 - 75.0

702

10

12.0

2,500

166.0

15.0

89

470

1,500

F2524RW

48

36.0 - 75.0

702

10

15.0

2,000

133.0

18.0

89

470

1,500

F2525RW

48

36.0 - 75.0

702

10

±12.0

±1,250

±83.0

±15.0

89

±220

1,500

F2526RW

48

36.0 - 75.0

702

10

±15.0

±1,000

±65.0

±18.0

89

±220

1,500

Mechanical Dimensions

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.

External Trim

Derating Curves

For Heatsink Option, add suffix “H” to model number (i.e. F2503RW-H)