P
POLYTRON DEVICES, Inc.
8 WATT
SINGLE & DUAL OUTPUT
Regulated 24 Pin DIP Package
Isolated, 2:1 Input
DC/DC Converters
Specifications
FEATURES
• 8 Watts in DIL Package
• 3.3 Vdc Output
• 80% Typical Efficiency
• Regulated Outputs
• No Derating to 70°C
• 1500 Vdc Min.
Input/Output Isolation
• 5-Sided EMI Shield
All specifications are typical at nominal input, full load, and 25˚C ,
unless otherwise noted.
INPUT
Input Voltages...................................................................Voltage Range
12 Vdc..........................................................................9-18 Vdc
24 Vdc........................................................................18-36 Vdc
48 Vdc........................................................................36-72 Vdc
Input Filter................................................................................Pi Network
OUTPUT
Voltage Accuracy......................................................................±2% max.
Line Regulation
Single Output.........................................................................±0.2% max.
Dual Output...........................................................................±0.2% max.
Load Regulation
Single Output.........................................................................±0.2% max.
Dual Output..............................................................................±1% max.
Ripple Noise (20 MHz BW)........................................................50mVp-p
Temperature Coefficient (at FL).....................................±0.02%/°C max.
REMOTE ON/OFF CONTROL
Control Voltage Referenced To Negative (-) Input
Compatability.........................................................................CMOS, TTL
On Control...................................................................4.8V min. on open
Off Control..................................................................1.8V max. on short
GENERAL
Efficiency........................................................80-85% nominal line @ FL
Isolation Voltage................................................................1500 Vdc min.
Isolation Resistance.............................................................1000MOhms
Isolation Capacitance...........................................................300 pF max.
Switching Frequency............................................................300KHz min.
ENVIRONMENTAL
Operating Temperature Range............................................-25 to +71°C
Storage Temperature Range..............................................-55 to +125°C
Cooling Free.....................................................................Air Convection
EMI/RFI........................................................................Five-Sided Shield
TWA8 Series
PHYSICAL
Case Material..........................................Non-Conductive Nickel-Coated
Copper with Non-Conductive Base
Dimensions..............................................................1.25" x 0.80" x 0.40"
(31.8 x 20.3 x 10.2 mm)
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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