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DATASHEET
Rev. B
LTW SERIES
4:1 Ultra Wide Input Voltage Ranges
Triple Outputs
2.0 x 2.0 x 0.52 Inch Package
15W DC/DC Power Converters
FEATURES
• Triple Outputs
• RoHS Compliant
• 4:1 Ultra Wide Input Voltage Ranges
• 15 Watts Output Power
• Efficiency up to 80%
• 100% Burn-in Tested
• Short Circuit Protection
• Remote ON/OFF Control
• Six-Sided Shielding
• 2.0 x 2.0 x 0.52 Inch Package
APPLICATIONS
• 1500VDC I/O Isolation
• Wireless Networks
• Wide Operating Temperature Range: -40°C to +85°C
• Telecom / Datacom
• MTBF > 1,500,000 Hours
• Measurement Equipment
• UL 94V-0 Package Material
• Industry Control Systems
• UL60950-1 Approvals
• Semiconductor Equipment
• Custom Solutions Available
DESCRIPTION
The LTW series of DC/DC power converters provides 15 Watts of continuous output power in a 2.0” x 2.0” x
0.52” package. This series has triple output models with 4:1 ultra wide input voltage ranges of 9-36VDC and 2072VDC. Some features include 1500VDC I/O isolation, remote ON/OFF control, six-sided shielding, efficiency
up to 80%, and short circuit protection. This series is RoHS compliant and has UL 60950-1 safety approvals.
These units are well suited for use in wireless networks, telecom/datacom applications, measurement equipment,
industry control systems, and semiconductor equipment. All models are 100% burn-in tested.
08/26/2014
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 1 of 4
LTW Series
15 Watts
Triple Outputs
DC/DC Power Converters
Rev. B
SPECIFICATIONS: LTW Series
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
SPECIFICATION
TEST CONDITIONS
Min
Nom
Max
24VDC nominal input models
9
24
36
48VDC nominal input models
20
48
72
Unit
INPUT SPECIFICATIONS
Input Voltage Range
Input Filter
VDC
capacitor
Remote ON/OFF
yes
OUTPUT SPECIFICATIONS
Output Voltage
Voltage Accuracy
See Table
5VDC output, Io=1.5A
±5
±12VDC outputs, Io=0.31A
±2
±15VDC outputs, Io=0.25A
Load Regulation
25% to 100% full load
Line Regulation
low line to high line at full load
%
±2
±0.2
Output Power
0
Output Current
%
±1.0
%
15
W
See Table
Ripple & Noise
20MHz Bandwidth
Transient Response Time
50% load step change
100
mVp-p
350
µs
PROTECTION
Short Circuit Protection
Continuous, automatic recovery
GENERAL SPECIFICATIONS
Efficiency
80
%
Switching Frequency
100
KHz
Isolation Voltage (input to output)
(2sec/0.5mA)
1500
VDC
Isolation Resistance (input to output)
500VDC
1000
MΩ
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature
With derating (see derating curve)
Storage Temperature
Humidity (non-condensing)
Cooling
MTBF
-40
+85
°C
-40
+100
°C
95
%
Free air convection
MIL-HDBK-217F at 25°C, ground benign
PHYSICAL SPECIFICATIONS
Case Material
Potting Material
Shielding
Weight
1,500,000 hours
black coated copper with non-conductive base
Epoxy (UL94V-0 rated)
Six-sided
2.51oz (71.2g)
2.0 x 2.0 x 0.52 inches
(50.8 x 50.8 x 13.2 mm)
Dimensions (L x W x H)
SAFETY & EMI
Conducted Emissions
Radiated Emissions
EN55022 Class A
EN55022 Class A
Safety Approvals
UL 60950-1
Due to advances in technology, specifications subject to change without notice.
08/26/2014
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 2 of 4
LTW Series
15 Watts
Triple Outputs
DC/DC Power Converters
Rev. B
MODEL SELECTION TABLE
Model Number
LTW2412-15EI
LTW2415-15EI
LTW4812-15EI
LTW4815-15EI
Vo1
Vo2
Vo3
Vo1
Vo2
Vo3
Vo1
Vo2
Vo3
Vo1
Vo2
Vo3
Input Voltage Range
Output Voltage
Output Current
Output Power
24 VDC
5 VDC
+12 VDC
1.5A
0.31A
15W
-12 VDC
5 VDC
+15 VDC
-15VDC
5 VDC
+12 VDC
0.31A
1.5A
0.25A
0.25A
1.5A
0.31A
-12 VDC
5 VDC
+15 VDC
-15VDC
0.31A
1.5A
0.25A
0.25A
(9 – 36 VDC)
24 VDC
(9 – 36 VDC)
48 VDC
(20 – 72 VDC)
48 VDC
(20 – 72 VDC)
15W
15W
15W
APPLICATIONS
Test Circuit
Recommended Filter for EN55022 Class A Compliance
GRAPHS
Derating Curve
08/26/2014
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Tolerance
Page 3 of 4
Rev. B
LTW Series
15 Watts
Triple Outputs
DC/DC Power Converters
MECHANICAL DRAWING
COMPANY INFORMATION
Wall Industries, Inc. has created custom and modified units for over 50 years. Our in-house research and development
engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2008
certification is just one example of our commitment to producing a high quality, well-documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working
closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to
provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss
your future projects.
Contact Wall Industries for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
08/26/2014
(603)778-2300
(888)587-9255
(603)778-9797
sales@wallindustries.com
www.wallindustries.com
37 Industrial Drive
Exeter, NH 03833
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 4 of 4