DFC25 SERIES
TRIPLE OUTPUT
DESCRIPTION
The DFC25 Series DC/DC converter provides three output voltages
from a single 12, 24, or 48 volt nominal input for industrial and
datacom equipment. Available output power ranges up to 25 watts.
Excellent noise performance is attained via an aluminum case,
toroidal magnetics, and double shielded transformers. Common
mode and differential mode input filtering are integral to the design.
Selected models provide 1544 volts isolation from input to output.
The input and output sections of the DFC25 Series are protected
from overvoltage transients via internal circuitry. Same voltage
single output units of the DFC25 family may be connected in
parallel to achieve additional output current.
Selection Chart -
Up to 25 Watts Output Power
Model
DFC25E24T5/12
DFC25E24T5/15
DFC25E48T3.3/12
DFC25E48T5/12
FEATURES
鈥?Up to 25 Watts with Triple Outputs
鈥?+3.3V or +5V Main Outputs
鈥?Remote ON/OFF
鈥?Common and Differential Mode Input Filters
鈥?Main Output Trim
鈥?Efficiencies to 81%
鈥?Operation from -25擄C up to 85擄C
鈥?700/1544V Isolation
鈥?Two Year Warranty
鈥?UL/CSA/T脺V
BOTTOM VIEW
SIDE VIEW
0.040 (1.02) DIA
6 PLACES
6
5
Input Range
VDC
Min
Max
18
18
36
36
36
36
72
72
Output
VDC
Nominal
+5.0, 鹵12
+5.0, 鹵15
+3.3, 鹵12
+5.0, 鹵12
Output
mA MAX
+5000, 鹵1000
+5000, 鹵800
+5000, 鹵1000
+5000, 鹵1000
2.50
(63.5)
2.75
(70.0)
9
8
7
3.00
(76.2)
General Specifications
(1)
All Models
Isolation (3)
Isolation Voltage
Input to Output
12V, 24V Input
48V Input
10碌A(chǔ) Leakage
Input to Output Capacitance
Remote ON/OFF
ON Logic Level or Pin Open
Off Logic Level or Tie to -Input
Converter Idle Current
Output Trim Function
Input Resistance
Programming Range
Environmental
Case Operating Range (2)
Case Functional Range
Storage Range
Thermal Impedance
General
MTBF (Calculated)
Unit Weight
TYP
TYP
1,000,000
2.6/71
Hours
oz/gm
MIN
MAX
MIN
MAX
MIN
MAX
TYP
-25
+60
-40
+105
-45
+105
10
擄C
擄C
擄C
擄C/Watt
TYP
MIN
40
鹵10
k鈩?/div>
%
MIN
MAX
TYP
2.5
0.7
10
Volts
Volts
mA
Units
0.25
(6.3)
0.00
1
2
4
1.65
(42.0)
0.85
(21.6)
1.25
(31.8)
2.05
(52.1)
0.000
TYP
700
pF
PIN CONNECTIONS
PIN NUMBER
PIN OUT
1
-INPUT
2
+INPUT
3
N/C
4
ON/OFF
5
TRIM
6
+3.3V OR +5V
7
COMMON
8
+12V OR +15V
9
-12V OR -15V
0.00
0.45
(11.4)
NOTE:
All pins are 0.040"
diameter brass with tin plating.
Mechanical tolerances unless
otherwise noted:
X.XX dimensions: 鹵0.020 inches
X.XXX dimensions: 鹵0.005 inches
NOTES
(1) All parameters measured at 25擄C, nominal input voltage,
and full rated load unless otherwise noted.
(2) Derate linearly to 0 Watts at 105擄C ambient. Operation to
+70擄C ambient with externally supplied forced air cooling,
100LFM.
(3) Case is tied to -Input, Pin 1.
Rev. 04/2000
1
0.43
(11.0)
Volts
0.38
(9.65)
MIN
MIN
700
1544
1
2
