P
POLYTRON DEVICES, Inc.
3 WATT
SINGLE OUTPUT
Regulated 24-Pin DIP Package
DC/DC Converters
Specifications
FEATURES
• 2:1 Wide Input Range
Typical at 25˚C under full load and nominal input voltage, unless
otherwise specified
INPUT
Input Voltages............................................................ Voltage Range
5 Vdc..................................................................4.5-6.0 Vdc
12 Vdc.....................................................................9 -18 Vdc
....................................................................9 -36 Vdc
24 Vdc..................................................................18 - 36 Vdc
.................................................................18 - 72 Vdc
48 Vdc..................................................................36 - 72 Vdc
OUTPUT
Voltage Accuracy.................................................................±3% max.
Voltage Stability................................................................+0.5% max.
Line Regulation...................................................................+1% max.
Load Regulation..................................................................+1% max.
Ripple Noise (20MHz Bw).......................................0.5 - 1% p-p max.
Temperature Coefficient (at FL).................................+0.02%/˚C max.
Short Circuit Protection.................................................... Continuous
GENERAL
Efficiency...................................................................76% max. @ FL
Isolation Voltage.............................................................500 Vdc min.
Isolation Resistance.......................................................1000MOhms
Switching Frequency........................................................25KHz min.
ENVIRONMENTAL
Operating Temperature Range.......................................-25˚ to +71˚C
Storage Temperature Range........................................-55˚ to +105˚C
Derating .....................................................................................None
Cooling................................................................Free Air Convection
Humidity................................................25-95% RH Non-Condensing
PHYSICAL
Case Material.......................................Non-Conductive Black Plastic
Weight ................................................................0.5 oz. (14.3 grams)
Dimensions.........................................................1.25” x 0.80” x 0.50”
• 500 Vdc Input/
Output Isolation
• Efficiency to
76% @ FL
• Short Circuit
Protection
• No External
Components
• New 3.3 Vdc Outputs
TWA3 Series
P.O. Box 398, Paterson, New Jersey 07544 U.S.A.
Tel: (973)345-5885 Fax: (973)345-1264 • Email: sales@polytrondevices.com • www.polytrondevices.com
16
1.5-3 Watt Single & Dual Output DC/DC Converters
Selection Guide
Input Voltage
Nominal
(Vdc)
Output
Voltage
(Vdc)
3.3
5
12
15
3.3
5
12
15
3.3
5
12
15
3.3
5
12
15
±5
±12
±15
±5
±12
±15
±5
±12
±15
±5
±12
±15
Output
Current
(mA)
600
500
250
200
600
500
250
200
600
500
250
200
600
500
250
200
±250
±125
±100
±250
±125
±100
±250
±125
±100
±250
±125
±100
Input Current (mA)
No Load
14.1
60
170
140
15.9
30
30
35
10
15
15
20
3.2
15
15
10
140
180
180
100
75
60
30
30
30
20
20
20
Full Load
649
720
930
880
266
300
340
375
126
165
165
170
61
80
85
95
810
900
1000
300
360
350
150
180
120
80
85
90
Model Number
TWA3-5S33
TWA3-5S5
TWA3-5S12
TWA3-5S15
TWA3-12S33
TWA3-12S5
TWA3-12S12
TWA3-12S15
TWA3-24S33
TWA3-24S5
TWA3-24S12
TWA3-24S15
TWA3-48S33
TWA3-48S5
TWA3-48S12
TWA3-48S15
TWA3-5-5
TWA3-5-12
TWA3-S-15
TWA3-12-5
TWA3-12-12
TWA3-12-15
TWA3-24-5
TWA3-24-12
TWA3-24-15
TWA3-48-5
TWA3-48-12
TWA3-48-15
Case
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
TWA3 Series
SINGLE OUTPUT VOLTAGE
5
12
24
48
DUAL OUTPUT VOLTAGE
5
12
24
48
Mechanical Specifications
Pin
1
2
3
10
11
12
13
14
15
22
23
24
I/O Connections
SINGLE
+Vin
NC
NC
-Vout
+Vout
-Vin
-Vin
+Vout
-Vout
NC
NC
+Vin
DUAL
+Vin
-Vout
Common
Common
+Vout
-Vin
-Vin
+Vout
Common
Common
-Vout
+Vin
0.08
(2.03)
0.02
(0.51)
CASE B
24
23
22
1
2
3
BOTTOM
VIEW
15
14
13
10
11
12
1.25
(31.75)
0.10
(2.54)
0.60
(15.24)
0.80
(20.30)
0.15
(3.81)
0.50
(12.60)
All Dimensions are in inches (mm)
P
POLYTRON DEVICES, Inc.
P.O. Box 398, Paterson, New Jersey 07544 U.S.A.
Tel: (973)345-5885 Fax: (973)345-1264 • Email: sales@polytrondevices.com • www.polytrondevices.com
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