DFC25 SERIES
SINGLE OUTPUT
DESCRIPTION
The DFC25 Series DC/DC converter provides tightly regulated
output voltages for industrial and datacom applications from 12, 24,
or 48 Volt inputs. Available output power ranges from 24.75 to 30
watts. Excellent noise performance is attained via an aluminum case,
toroidal magnetics, and double shielded transformers. Common
mode and differential mode input filtering is integral to the design.
Selected models provide 1544 volts isolation from the input to output.
The input and output sections of the DFC25 Series are protected
from overvoltage transients via internal circuitry. Same voltage
models of the DFC25 family may be connected in parallel to
achieve additional output current.
Selection Chart
Model
DFC25E12S3.3
DFC25E24S5
DFC25E48S5
DFC25E48S12
FEATURES
鈥?Up to 30 Watts Output Power
鈥?Remote ON/OFF
鈥?Common and Differential Mode Input Filters
鈥?+3.3, +5V, or +12V Outputs
鈥?Remote Voltage Sense
鈥?Efficiencies to 81%
鈥?Operation from -25擄C 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
9
18
36
36
18
36
72
72
Output
VDC
Nominal
3.3
5
5
12
Output
mA MAX
7500
6000
6000
2500
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
PIN CONNECTIONS
PIN NUMBER
PIN OUT
1
-INPUT
2
+INPUT
N/C
4
ON/OFF
5
TRIM
6
+OUTPUT
7
-OUTPUT
8
N/C
9
N/C
0.25
(6.3)
0.00
1
Units
2
4
MIN
MIN
TYP
700
1544
700
Volts
1.65
(42.0)
0.85
(21.6)
1.25
(31.8)
0.38
(9.65)
2.05
(52.1)
0.000
pF
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)
1
2
