S T A N D A R D D C / D C C O N V E R T E R S
54
Input Characteristics
Input Voltage Range:
4.5-9, 9-18, 18-36, 36-72 VDC
Input Filtering:
Pi Filter
Efficiency:
See Available Models Chart
No Load Input Current:
See Available Models Chart
Output Characteristics
Output Voltage Accuracy:
+/-1% max
Output Voltage Balance:
+/-1% Max, Dual Output Models
Total Error Band:
+/-2% Max (Singles), +/-3% (Duals)
Minimum Load Requirements:
10% of Full Load
Line Regulation:
+/-0.5% Max (Singles & Duals)
Load Regulation:
+/-0.5% Max (Singles & Duals)
Ripple and Noise:
60mV pk-pk, 20MHz Bandwidth
Over Line, Load & Temperature:
100mV pk-pk Max, 20MHz Bandwidth
Transient Response/Recovery Time:
+/-5%, 500S Max., 50% Load Step
Temperature Coefficient:
+/-0.02%/C
Short Circuit Protection:
Continuous; Auto-recovery
Environmental Characteristics
Operating Temperature Range (Ambient)
-40C to +85C, derate 3.3%/C above 71C
Storage Temperature Range:
-55C to +125C
Maximum Case Temperature
95C
Internal Power Dissipation
2.5W Max.
Humidity:
Up to 95%, Non-condensing
Cooling:
Free-air Convection
Reliability (MTBF per Mil-HDBK-217):
>1,000,000 hours, +25C, Ground Benign
General Characteristics
Switching Frequency:
300kHz, Typ.
Isolation Voltage (Input to Output):
1500VDC, (1 minute)
Isolation Resistance:
10
9
Ohms
Isolation Capacitance:
100pF, Max.
Weight:
0.42 oz (12g)
Case Material:
Non-conductive black plastic
Flammability:
UL 94-V0 (Materials)
Key Features:
Single & Dual Output
Models
2:1 Input Voltage range
Low Profile, 24 pin DIP
package
Industry Standard
Pinout
Ideally Suited For:
Telecom equipment
Mixed analog/digital
subsystems
Data Communications
300WFR series
2 to 3 watts
All specifications are typical at 25 degrees C with nominal input voltage and full output unless
otherwise noted. Specifications are subject to change without notice. All dimensions are typical.
55
Additional Features
Optional (-A1) Footprint, consult factory
Available Models
Input
Input
Nominal
Voltage
Output
Max. Output
Current
Model
Input Voltage
Range
Voltage
Current
Efficiency @
No-Load
(VDC)
(VDC)
(VDC)
(mA)
Full-Load (%)
(mA) typ.
303S5WFR
5
4.5-9.0
3.3
600
70
40
305S5WFR
5
4.5-9.0
5.0
500
73
40
312S5WFR
5
4.5-9.0
12.0
250
77
40
315S5WFR
5
4.5-9.0
15.0
200
77
40
305D5WFR
5
4.5-9.0
+/-5.0
+/-250
72
40
312D5WFR
5
4.5-9.0
+/-12.0
+/-125
75
40
315D5WFR
5
4.5-9.0
+/-15.0
+/-100
75
40
303S12WFR
12
9-18
3.3
600
74
20
305S12WFR
12
9-18
5.0
500
78
20
312S12WFR
12
9-18
12.0
250
82
20
315S12WFR
12
9-18
15.0
200
82
20
305D12WFR
12
9-18
+/-5.0
+/-250
77
20
312D12WFR
12
9-18
+/-12.0
+/-125
80
20
315D12WFR
12
9-18
+/-15.0
+/-100
80
20
303S24WFR
24
18-36
3.3
600
76
5
305S24WFR
24
18-36
5.0
500
79
5
312S24WFR
24
18-36
12.0
250
84
5
315S24WFR
24
18-36
15.0
200
84
5
305D24WFR
24
18-36
+/-5.0
+/-250
79
5
312D24WFR
24
18-36
+/-12.0
+/-125
82
5
315D24WFR
24
18-36
+/-15.0
+/-100
82
5
303S48WFR
48
36-72
3.3
600
76
3
305S48WFR
48
36-72
5.0
500
79
3
312S48WFR
48
36-72
12.0
250
84
3
315S48WFR
48
36-72
15.0
200
84
3
305D48WFR
48
36-72
+/-5.0
+/-250
80
3
312D48WFR
48
36-72
+/-12.0
+/-125
84
3
315D48WFR
48
36-72
+/-15.0
+/-100
84
3
Outline Drawing
Pinout Chart
Pin Connections Standard
Pin Connections (-A1)
Pin
Single
Dual
Single
Dual
2,3
-Vin
-Vin
-Vin
-Vin
9
NC
Common
No Pin
Common
11
NC
-Vout
No Pin
-Vout
14
+Vout
+Vout
+Vout
+Vout
16
-Vout
Common
-Vout
Common
10,15
NC
NC
No Pin
No Pin
22,23
+Vin
+Vin
+Vin
+Vin
NC : No Connection with Pin
1.25
31.80
0.80
20.30
0.40
10.20
0.60
15.20
0.15
3.80
0.10
2.50
TYPICAL
0.18
4.60
0.02 (0.50)
DIAMETER
TYPICAL
23
2
14
11
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