P
POLYTRON DEVICES, Inc.
1.8 WATT
SINGLE OUTPUT
Isolated, Low Profile
DC/DC Converters
Specifications
FEATURES
• Transfer Molded Type
All specifications are typical at nominal input, full load, and 25˚C ,
unless otherwise noted.
INPUT
Voltage Range...........................................................+5%, See Table
Input Filter...............................................................Internal Capacitor
OUTPUT
Voltage Accuracy.................................................................±5% max.
Line Regulation (at FL).................................................±5% max.
Load Regulation (FL to 1/4 Load)........................................±5% max.
Ripple Noise (20MHz Bw)...............................................1% P-P max.
Temperature Coefficient (at FL).....................................0.5%/˚C max.
Short Circuit Protection.....................................................Momentary
GENERAL
Efficiency (at FL)..............................................................75% Typical
Isolation Voltage.....................................................................500 Vdc
Isolation Resistance.......................................................1000MOhms
Switching Frequency.........................................................25KHz typ.
ENVIRONMENTAL
Operating Temperature Range.......................................-25˚ to +71˚C
Storage Temperature Range........................................-40˚ to +105˚C
Derating......................................................................................None
Cooling................................................................Free Air Convection
Relative Humidity..........................................................Up to 95% RH
PHYSICAL
Case Material.......................................Non-Conductive Black Plastic
Weight.......................................................................14 grams typical
Dimensions.........................................................1.00” x 0.54” x 0.37”
.................................................(26.4 x 13.72 x 9.40 mm)
• 16-Pin SMD Package
• 500 Vdc Input/Output
Isolation
• Low Profile
• Compact Size
SM1.8 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
8
1.8 Watt Single Output DC/DC Converters
Selection Guide
SM1.8 Series
SINGLE OUTPUT VOLTAGE
Input Voltage
Nominal
(Vdc)
Output
Voltage
(Vdc)
5
9
12
15
5
9
12
15
Output
Current
(mA, Max)
360
200
150
120
360
200
150
120
Input Current (mA)
No Load
30
30
30
30
20
20
20
20
Full Load
515
480
480
480
214
200
200
200
Efficiency
%
70
75
75
75
70
75
75
75
Model Number
Package
SM1.8-5S5
SM1.8-5S9
SM1.8-5S12
SM1.8-5S15
SM1.8-12S5
SM1.8-12S9
SM1.8-12S12
SM1.8-12S15
16 pin SMD
16 pin SMD
16 pin SMD
16 pin SMD
16 pin SMD
16 pin SMD
16 pin SMD
16 pin SMD
5
12
Mechanical Specifications
I/O Connections
PIN #
1
3
7
8
FUNCTION
-Vin
+Vin
+Vout
-Vout
0.70 (17.78)
0.002 (0.50)
0.10 (2.54)
0.70 (17.78)
0.10
(2.54)
0.10
(2.54)
0.04
(1.02)
0.54
(13.72)
1
Suggested Footprint
0~
8
0.37
(9.40)
0.35 (8.89)
0.10
16 SURFACES
1.0 (25.40)
0.50 (12.70)
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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