Model Selection Guide
Input
Model
Number
F2501RU
F2502RU
F2503RU
F2504RU
F2505RU
F2506RU
F2511RU
F2512RU
F2513RU
F2514RU
F2515RU
F2516RU
Voltage (VDC)
Nominal
24
24
24
24
24
24
48
48
48
48
48
48
Range
10.0 - 40.0
10.0 - 40.0
10.0 - 40.0
10.0 - 40.0
10.0 - 40.0
10.0 - 40.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
Output
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Over
Voltage Efficiency
Current (mA)
Voltage Current
Current Protection
(%, Typ)
(VDC) (mA, Max) (mA, Min)
Full-Load No-Load
(VDC)
922
20
3.3
5,500
400.0
3.9
82
1,225
20
5.0
5,000
350.0
6.8
85
1,404
20
12.0
2,500
166.0
15.0
89
1,404
20
15.0
2,000
133.0
18.0
89
1,404
20
±12.0
±1,250
±83.0
±15.0
89
1,404
20
±15.0
±1,000
±65.0
±18.0
89
461
10
3.3
5,500
400.0
3.9
82
613
10
5.0
5,000
350.0
6.8
85
702
10
12.0
2,500
166.0
15.0
89
702
10
15.0
2,000
133.0
18.0
89
702
10
±12.0
±1,250
±83.0
±15.0
89
702
10
±15.0
±1,000
±65.0
±18.0
89
Capaci-
tive
Load
(µF Max)
1,000
1,000
1,000
1,000
±330
±330
1,000
1,000
1,000
1,000
±330
±330
Fuse Rating
Slow-Blow
(mA)
5,000
5,000
5,000
5,000
5,000
5,000
3,000
3,000
3,000
3,000
3,000
3,000
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.
For Heatsink Option, add suffix “H” to model number (i.e.
F2503RU-H)
Mechanical Dimensions
External Trim
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
(36.667 x Vout) - (33 x Vout)
Vout - Vadj
Pin Connections
Pin Single
Dual
1
+Vin
+Vin
2
-Vin
-Vin
4 ON/OFF ON/OFF
5 No Pin +Vout
Pin Single
6
+Vout
7
-Vout
8
Trim
Dual
Comm.
-Vout
Trim
Mechanical Notes:
•
All dimensions are typical
in inches (mm)
•
Tolerance x.xx = ±0.01 (±0.25)
Down
Radj =
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.
Heatsink Dimensions
(Optional)
Derating Curves
Heatsink Notes:
MicroPower Direct
We Power Your Success - For Less!
292 Page Street Ste D Stoughton, MA 02072
•
•
Use of the heatsink will extend the units operating temperature
range by approximately 10°C.
•
The heatsink is black anodized aluminum.
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
MPD [ MICROPOWER DIRECT, LLC ]
