The WFC02RC is a family of high performance DC/DC converters
that offers regulated outputs over input voltage ranges of 9-36V
and 18-72V while offering a wide operating temperature range
of -40°C to +85°C without derating.
Each WFC02RC contains input filtering to minimize conducted
noise. The design utilizes surface mounted components, including
magnetics, to provide enhanced reliability.
The converter is designed to meet the requirements of EN60950
with the “L” pinout having 1,500 VDC isolation. All WFC02RC
converters are designed to withstand input voltage transients to
200% of nominal input voltage. An additional feature is the ability
of the WFC02RC to drive high capacitive loads.
SIMPLIFIED CIRCUIT DIAGRAM
APPLICATIONS
Telecommunications
Battery Powered Systems
Portable Instruments
Process Control Equipment
Transportation Equipment
Distributed Power Systems
Page 1
WFC02RC
REV B: RoHS
08/2007
ABSOLUTE MAXIMUM RATINGS
Output Short Circuit Protection --------------Continuous
Internal Power Dissipation ----------------------------1.5W
Max Case Temperature-----------------------------+100°C
ELECTRICAL SPECIFICATIONS
Specifications typical at T
A
=25°C, nominal input voltage, rated output current unless otherwise stated.
Nominal Rated
Input
Output
Output Current (mA)
Voltage Voltage
(Volts) (Volts) Min Load Rated Load
24
24
24
24
24
24
48
48
48
48
48
48
5.0
12.0
15.0
+5.0
+12.0
+15.0
5.0
12.0
15.0
+5.0
+12.0
+15.0
40
16
12
+20
+8
+7
40
16
12
+20
+8
+7
400
167
125
+200
+80
+67
400
167
125
+200
+80
+67
Max Input
Current
(mA)
Rated Load
300
306
306
315
315
315
152
152
152
156
156
155
Max
Capacitive
Load (μF)
Efficiency
%
Model
WFC02R24S05LC
WFC02R24S12LC
WFC02R24S15LC
WFC02R24D05LC
WFC02R24D12LC
WFC02R24D15LC
WFC02R48S05LC
WFC02R48S12LC
WFC02R48S15LC
WFC02R48D05LC
WFC02R48D12LC
WFC02R48D15LC
400
167
125
+200
+80
+67
400
167
125
+200
+80
+67
77
76
77
75
76
76
74
74
76
74
76
77
ORDERING INFORMATION
WFC02R
Device Family
Indicates wide input power 2W regulated DC/DC
Model Number
Selected from Table of Electrical Characteristics
xx=input voltage
y=number of outputs: S=single, D=dual
zz=output voltage
Pinout
RoHS Compliant
xxyzz L
C
Page 2
WFC02RC
REV B: RoHS
08/2007
COMMON SPECIFICATIONS
Specifications typical at T
A
=25°C, nominal input voltage, rated output current unless otherwise stated.
Parameter
Input
Voltage Range
Reflected Ripple Current
Isolation
Safety Standards
Rated Voltage
Test Voltage—60 Hz, 10 secs
Resistance
Capacitance
Leakage Current
Output
Rated Power
Voltage Setpoint Accuracy
Temperature Coefficient
Line Regulation-singles
Line Regulation-duals
Load Regulation-singles
Load Regulation-duals
Ripple & Noise
General
MTTF per MIL-HDBK-217, Rev F
Moisture Sensitivity Level (MSL)
Temperature
Operation
Storage
Conditions
Min
9
18
Typ
24
48
50
Max
36
72
Units
Vdc
Vdc
mA p-p
Designed to meet requirements of
EN60950, EN41003 & UL1950
“L” Pinout
“L” Pinout
1500
1500
10
220
30
2
+3.0
+0.02
V
iso
=240Vac, 60 Hz
Vdc
Vpk
GΩ
pF
μArms
W
%
%/°C
%
%
%
%
mV p-p
Hours
Low line to high line
Low line to high line
Min load to rated load
Min load to rated load
BW=5 Hz to 20 MHz
T
A
=25°
Per IPC/JEDEC J-STD-020
-40
-55
50
1,000,000
2
+1.5%
+1.5%
+2%
+2%
100
+85
+125
°C
°C
THROUGH-HOLE SOLDERING INFORMATION
These devices are intended for wave soldering or manual soldering.
They are not intended to be subject to surface mount processes under any circumstances.
The normal wave soldering process can be used with these devices where the device is subjected to a maximum wave temperature of 260°C for a period of
no more than 10 seconds. Within this time and temperature range, the integrity of the device’s plastic body will not be compromised and internal temperatures
within the converter will not exceed 175°C. Care should be taken to control manual soldering limits identical to that of wave soldering.
Page 3
WFC02RC
REV B: RoHS
08/2007
MECHANICAL SPECIFICATIONS
PINOUT “L”
Pin
Number
2
C
Pin Function
Singles
Duals
-Vin
-Vin
No connection
No connection
+Vout
-Vout
+Vin
+Vin
-Vin
-Vin
Common
-Vout
+Vout
Common
+Vin
+Vin
3
9
11
14
16
22
23
TECHNICAL INFORMATION
Notes:
1. All dimensions in inches and (millimeters).
2. Units are encapsulated with a low thermal resistance molding compound which has excellent chemical
resistance, wide operating temperature range and good electrical properties under high humidity
environments. The encapsulant and outer shell have UL94V-0 ratings. Lead material is brass; pin finish is 100-
300 microinches of matte tin over a nickel barrier layer of 40-80 microinches.
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Embedded System
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