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DATASHEET
Rev. B
LANCW3 SERIES
2:1 & 3:1 Wide Input Voltage Ranges
Single & Dual Outputs
High Power Density in 24-Pin DIP Package
3 Watt DC/DC Power Converters
FEATURES
• RoHS Compliant
• Single & Dual Fully Regulated Outputs
• 3 Watts Output Power
• -40°C to +85°C Operating Temperature Range
• 1.25” x 0.8” x 0.4” 24-Pin DIP Plastic Package
• Short Circuit and Over Load Protection
• 2:1 & 3:1 Wide Input Voltage Ranges
• Input Filter meets EN55022 Class A and FCC Level A
• 1500VDC I/O Isolation
• UL/cUL 60950-1 (CSA Certificate) & IEC/EN 60950-1
• High Efficiency up to 81%
Safety Approvals
DESCRIPTION
The LANCW3 series of DC/DC power converters provides 3 Watts of output power in a 1.25” x 0.8” x 0.4” 24pin DIP plastic package. This series consists of fully regulated single and dual output models with 2:1 wide input
voltage ranges of 4.5~9VDC, 9~18VDC, 18~36VDC, and 36~75VDC and a 3:1 input voltage range of
10~30VDC. These converters operate over a temperature range of -40°C to +85°C while maintaining all
specifications. This product features an input filter that meets EN 55022 Class A and FCC Level A requirements.
Other features include efficiency up to 81%, 1500VDC I/O isolation, and over load and short circuit protection.
These converters are RoHS compliant and have UL 60950-1 (CSA Certificate) and IEC/EN 60950-1 safety
approvals. The LANCW3 series offers an economical solution for many cost critical applications in batterypowered equipment and instrumentation.
12/17/2012
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 1 of 6
LANCW3 Series
Single and Dual Outputs
2:1 & 3:1 Wide Input Ranges
3 Watt DC/DC Power Converters
Rev. B
SPECIFICATIONS: LANCW3 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
Typ
4.5
9
10
18
36
-0.7
-0.7
-0.7
-0.7
-0.7
3.5
4.5
4.5
8
16
5
12
20
24
48
Max
Unit
INPUT SPECIFICATIONS
Input Voltage Range
Input Surge Voltage (1s max.)
Start-up Voltage
Under Voltage Shutdown
5VDC nominal input models
12VDC nominal input models
20VDC nominal input models
24VDC nominal input models
48VDC nominal input models
5VDC nominal input models
12VDC nominal input models
20VDC nominal input models
24VDC nominal input models
48VDC nominal input models
5VDC nominal input models
12VDC nominal input models
20VDC nominal input models
24VDC nominal input models
48VDC nominal input models
5VDC nominal input models
12VDC nominal input models
20VDC nominal input models
24VDC nominal input models
48VDC nominal input models
Input Current
Reflected Ripple Current (Page 5)
Reverse Polarity Input Current
Short Circuit Input Power
Internal Power Dissipation
Input Fuse
OUTPUT SPECIFICATIONS
Output Voltage
Line Regulation
Load Regulation
Output Voltage Accuracy
Output Voltage Balance
Output Power
Output Current
Minimum Load (Note 1)
Ripple & Noise (20MHz BW) (Page 5)
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
PROTECTION
Short Circuit Protection
Over Load Protection
GENERAL SPECIFICATIONS
Efficiency
Switching Frequency
Isolation Voltage (Input to Output)
Isolation Resistance
Isolation Capacitance
5VDC nominal input models
12VDC nominal input models
20VDC nominal input models
24VDC nominal input models
48VDC nominal input models
See Table
±0.2
±0.5
±0.2
±0.5
±0.5
±2.0
±0.5
±2.0
See Table
See Table
See Table
45
60
100
15
Low line to high line at full load
10% to 100% full load
Full load an nominal Vin
Dual Outputs, Balanced loads
Over line, load, and temperature
Measured to within 1% error band for a step change in output
load from 75% to 100%
25% load step change
foldback
120
Nominal input voltage and full load
60 seconds
500VDC
20VDC nominal input models
Others
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
VDC
VDC
VDC
A
mW
mW
%
%
%
%
mVp-p
mVp-p
mVrms
500
µs
±3
±0.01
±5
±0.02
%
%/°C
continuous
TBD
1500
1000
100KHz, 1V
VDC
300
See Table
330
Maximum Capacitive Load (Page 6)
12/17/2012
9
18
30
36
75
11
25
50
50
100
4
4.5
7
9
7
9
12
18
24
36
3.5
4
6.5
8.5
6.5
8.5
11
17
22
34
See Table
See Table
1
1000
1500
2500
1500mA slow-blow type
700mA slow-blow type
600mA slow-blow type
350mA slow-blow type
135mA slow-blow type
500
150
See Table
%
KHz
VDC
MΩ
pF
Page 2 of 6
LANCW3 Series
Single and Dual Outputs
2:1 & 3:1 Wide Input Ranges
3 Watt DC/DC Power Converters
Rev. B
SPECIFICATIONS: LANCW3 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
Typ
Max
Unit
ENVIRONMENTAL SPECIFICATIONS
20VDC nominal input models
-25
+85
Operating Ambient Temperature Range
With derating
°C
Others
-40
+85
Case Temperature
+90
°C
Storage Temperature
-50
+125
°C
Humidity (non-condensing)
95
% RH
Cooling
“natural convection” is about 20LFM but is not equal to still air
Free air convection (20LFM)
Lead Temperature
1.5mm from case for 10 seconds
260
°C
MTBF (calculated)
MIL-HDBK-217F at 25°C, Ground Benign
1,000,000 hours
PHYSICAL SPECIFICATIONS
Weight
0.44oz (12.4g)
Dimensions (L x W x H)
1.25 x 0.80 x 0.40 inches (31.80 x 20.3 x 10.2 mm)
Case Material
Non-conductive black plastic
Flammability
UL 94V-0 rated
SAFETY & EMI
Safety Approvals
UL/cUL 60950-1 recognition (CSA certificate). IEC/EN 60950-1
Conducted EMI
Compliance to EN 55022, class A and FCC part 15, class A
MODEL SELECTION TABLE
SINGLE OUTPUT MODELS
Model Number
LANC505W3
LANC512W3
LANC515W3
LANC1205W3
LANC1212W3
LANC1215W3
LANC2405W3
LANC2412W3
LANC2415W3
LANC4805W3
LANC4812W3
LANC4815W3
LANC2005W3
LANC2012W3
LANC2015W3
Input Voltage
5 VDC
(4.5 – 9 VDC)
12 VDC
(9 – 18 VDC)
24 VDC
(18 – 36 VDC)
48 VDC
(36 – 75 VDC)
20 VDC
(10 – 30 VDC)
Output
Voltage
5 VDC
12 VDC
15 VDC
5 VDC
12 VDC
15 VDC
5 VDC
12 VDC
15 VDC
5 VDC
12 VDC
15 VDC
5 VDC
12 VDC
15 VDC
Output Current
Min (1)
Max
60mA
600mA
25mA
250mA
20mA
200mA
60mA
600mA
25mA
250mA
20mA
200mA
60mA
600mA
25mA
250mA
20mA
200mA
60mA
600mA
25mA
250mA
20mA
200mA
60mA
600mA
25mA
250mA
20mA
200mA
Output
Voltage
±12 VDC
±15 VDC
±12 VDC
±15 VDC
±12 VDC
±15 VDC
±12 VDC
±15 VDC
±12 VDC
±15 VDC
Output Current
Min (1)
Max
±12.5mA ±125mA
±10mA
±100mA
±12.5mA ±125mA
±10mA
±100mA
±12.5mA ±125mA
±10mA
±100mA
±12.5mA ±125mA
±10mA
±100mA
±12.5mA ±125mA
±10mA
±100mA
Input Current
Reflected Ripple
No Load Max Load Current (Typ)
857mA
40mA
811mA
100mA
811mA
329mA
20mA
313mA
30mA
313mA
162mA
5mA
154mA
15mA
154mA
81mA
3mA
77mA
10mA
77mA
188mA
5mA
188mA
20mA
188mA
Output
Power
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
Efficiency
70%
74%
74%
76%
80%
80%
77%
81%
81%
77%
81%
81%
80%
80%
80%
Maximum
Capacitive Load
2000µF
2000µF
2000µF
2000µF
4000µF
DUAL OUTPUT MODELS
Model Number
Input Voltage
LANC512DW3
LANC515DW3
LANC1212DW3
LANC1215DW3
LANC2412DW3
LANC2415DW3
LANC4812DW3
LANC4815DW3
LANC2012DW3
LANC2015DW3
5 VDC
(4.5 – 9 VDC)
12 VDC
(9 – 18 VDC)
24 VDC
(18 – 36 VDC)
48 VDC
(36 – 75 VDC)
20 VDC
(10 – 30 VDC)
Input Current
Reflected Ripple
No Load Max Load Current (Typ)
811mA
40mA
100mA
811mA
313mA
20mA
30mA
313mA
154mA
5mA
15mA
154mA
77mA
3mA
10mA
77mA
188mA
5mA
20mA
188mA
Output
Power
3W
3W
3W
3W
3W
3W
3W
3W
3W
3W
Efficiency
74%
74%
80%
80%
81%
81%
81%
81%
80%
80%
Maximum
Capacitive Load
±1000µF
±1000µF
±1000µF
±1000µF
±470µF
NOTES
1. These power converters require a minimum output loading to maintain all specified regulations. Operation under no-load conditions will not
damage these devices; however, they may not meet all the listed specifications.
2. All DC/DC converters should be externally fused at the front end for protection.
*Due to advances in technology, specifications are subject to change without notice.
12/17/2012
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 3 of 6
LANCW3 Series
Single and Dual Outputs
2:1 & 3:1 Wide Input Ranges
3 Watt DC/DC Power Converters
Rev. B
DERATING CURVES
20V Nominal Input Models
5V, 12V, 24V, and 48V Nominal Input Models
MECHANICAL DRAWING
12/17/2012
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 4 of 6
Rev. B
LANCW3 Series
Single and Dual Outputs
2:1 & 3:1 Wide Input Ranges
3 Watt DC/DC Power Converters
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin (4.7µH) and Cin (220µF, ESR < 1.0Ω at 100 KHz) to
simulate source impedance. Capacitor Cin offsets possible battery impedance.
Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0-500 KHz.
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47µF ceramic capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth
is 0-20MHz. Position the load between 50mm and 75mm from the DC/DC Converter.
DESIGN & FEATURE CONSIDERATIONS
Over Current Protection
To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and
can endure current limiting for an unlimited duration. At the point of current-limit inception, the unit shifts from voltage
control to current control. The unit operates normally once the output current is brought back into its specified range.
Input Source Impedance
The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect
the stability of the power module.
In applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor at
the input to ensure startup.
Capacitor mounted close to the power module helps ensure stability of the unit, it is recommended to use a good quality low
Equivalent Series Resistance (ESR < 1.0Ω at 100 KHz) capacitor of 8.2µF for 5V nominal input models, a 3.3µF for 12V
nominal input models, and a 1.5µF for 24V and 48V nominal input models.
12/17/2012
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 5 of 6
Rev. B
LANCW3 Series
Single and Dual Outputs
2:1 & 3:1 Wide Input Ranges
3 Watt DC/DC Power Converters
Output Ripple Reduction
A good quality low ESR capacitor placed as close as possible across the load will give the best ripple and noise performance.
To reduce output ripple, it is recommended to use 3.3µF capacitors at the output.
Maximum Capacitive Load
The LANCW3 series has a limitation of maximum connected capacitance on the output. The power module may be operated
in current limiting mode during start-up, affecting the ramp-up and the start-up time. The maximum capacitance can be
found in the model selection table.
Thermal Considerations
Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and
board spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case
temperature must be kept below 90°C. The derating curves are determined from measurements obtained in a test setup.
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:
12/17/2012
(603)778-2300
(888)587-9255
(603)778-9797
sales@wallindustries.com
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 6 of 6