3 Watt LCS Single Series DC/DC Converters
Features
Up to 3 Watts in a 0.80" x 1.25" x 0.28" case
Low Cost
Standard Pinout
Wide Input Range
High Efficiency
Fully Isolated, 1544 VDC
Fully Self contained,
No External Parts Required for Operation
5 Year Warranty
Description
These 3 Watt DC/DC converters were designed for fast
integration with your system’s power needs. With no external
components or filtering necessary for all but the most critical
applications, these converters can provide power instantly.
This saves you costly engineering time required to design
your system around the power converter.
Model
Selection Chart
Input Range
VD C
Min
12S3R3.600LCS
12S5.600LCS
12S12.250LCS
12S15.200LCS
24S3R3.600LCS
24S5.600LCS
24S12.250LCS
24S15.200LCS
48S3R3.600LCS
48S5.600LCS
48S12.250LCS
48S15.200LCS
9
9
9
9
18
18
18
18
36
36
36
36
N om
12
12
12
12
24
24
24
24
48
48
48
48
Max
18
18
18
18
36
36
36
36
72
72
72
72
V out
VD C
3.3
5
12
15
3.3
5
12
15
3.3
5
12
15
I out
mA
600
600
250
200
600
600
250
200
600
600
250
200
3 Watt LCS Single Series Block Diagram
A
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
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3 Watt LCS Single Series DC/DC Converters
Input Parameters *(1)
Model
Voltage Range
Input Current No Load
Min Load
Full Load
Efficiency
Switching Frequency
Maximum Input Over voltage,
100ms Maximum
Turn-on Time,
1% Output Error
Recommended Fuse
Model
Voltage Range
Input Current No Load
Min Load
Full Load
Efficiency
Switching Frequency
Maximum Input Over voltage,
100ms Maximum
Turn-on Time,
1% Output Error
Recommended Fuse
Model
Voltage Range
Input Current No Load
Min Load
Full Load
Efficiency
Switching Frequency
Maximum Input Over voltage,
100ms Maximum
Turn-on Time,
1% Output Error
Recommended Fuse
MIN
TYP
MAX
TYP
TYP
TYP
TYP
TYP
2
7
57
73
2
13
81
78
300
85
1
(3)
48S3R3.600LCS
48S5.600LCS
36
48
72
2
13
77
80
2
13
77
80
MIN
TYP
MAX
TYP
TYP
TYP
TYP
TYP
2
17
111
73
2
25
161
78
300
45
1
(3)
48S12.250LCS
48S15.200LCS
Units
VDC
24S3R3.600LCS
24S5.600LCS
18
24
36
2
25
155
80
2
25
155
80
MIN
TYP
MAX
TYP
TYP
TYP
TYP
TYP
10
33
231
70
10
50
338
74
300
24
1
(3)
24S12.250LCS
24S15.200LCS
Units
VDC
12S3R3.600LCS
12S5.600LCS
9
12
18
10
50
321
78
14
50
310
80
12S12.250LCS
12S15.200LCS
Units
VDC
mA
%
kHz
VDC
ms
mA
%
kHz
VDC
ms
mA
%
kHz
VDC
ms
A
NOTES
*
(2)
(3)
All parameters measured at T
AMB
= 25°C, nominal input
voltage and full rated load unless otherwise noted. Refer
to the CALEX Application Notes for the definition of
terms, measurement circuits and other information.
Noise is measured per CALEX Application Notes. Measurement
bandwidth is 0-20 MHz for peak-peak measurements, 10 kHz to
1 MHz for RMS measurements. Output noise is measured with
a 0.01µF / 100V ceramic capacitor in parallel with a 1µf / 35V
Tantalum capacitor, 1 inch from the output pins to simulate
standard PCB decoupling capacitance.
External fusing should be used for system protection due to a
catastrophic failure. See CALEX Application Note 9 in the Calex
DC/DC Catalog to determine correct fuse.
(4)
(5)
(6)
(7)
The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
Specifications subject to change without notice.
Requires minimum load to regulate. No harm to the unit when
operated at less than minimum load.
Water Washability - Calex DC/DC converters are designed to
withstand most solder/wash processes. Careful attention should
be used when assessing the applicability in your specific
manufacturing process. Converters are not hermetically sealed.
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
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3 Watt LCS Single Series DC/DC Converters
Output Parameters *(1)
Model
Output Voltage
Output Voltage Accuracy
Rated Load Range (6)
Load Regulation
10% - 100% Load
Line Regulation
Vin = Min-Max VDC
Noise (2)
Shor t Circuit Protection
MIN
TYP
MAX
MIN
MAX
TYP
TYP
TYP
50
12S3R3.600LCS
24S3R3.600LCS
48S3R3.600LCS
3.3
3.24
3.33
3.42
60
600
12S5.600LCS
24S5.600LCS
48S5.600LCS
5
4.90
5.00
5.10
60
600
0.2
0.1
75
Continuous, Auto Restar t
12S12.250LCS
24S12.250LCS
48S12.250LCS
12
11.70
12.00
12.30
25
250
12S15.200LCS
24S15.200LCS
48S15.200LCS
15
14.60
15.00
15.40
20
200
Units
VDC
VDC
mA
%
%
mV P-P
General Specifications
All Models
Isolation
Input to Output Isolation,
10µ Leakage
V nom = 12V, 24V
V nom = 48V
Environmental
Ambient Operating
Temperature
Case Operating Temperature
Storage Temperature
Thermal Impedance (4)
Cooling
General
Case Size
Case Material
Weight
MIN
MAX
MIN
MAX
MIN
MAX
TYP
-40
°C
+85
-40
°C
+105
-40
°C
+125
30
°C/watt
Free-Air Convection
1.27 x 0.74 x 0.28 in
32.3 x 18.8 x 7.1 mm
Non-Conductive
Black Plastic
8g
Units
MIN
MIN
700
1544
VDC
VDC
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
Pin location shown is for mating PCB.
The case is plastic with a non-conductive header.
APPLICATION NOTE
Start-up: A minimum load is required for the LCS to have a
nominal output. The specification indicates a minimum load of
10% of the maximum load, but will usually start with less. The
type of load will also vary the start-up characteristics. Such as
an electronic load or some types of active circuitry (vs. a pure
resisitive load) will require more load for start-up.
Each application should be verified and an additional resistive
load added if needed.
The output may be in a burp mode (output pulsing) with less
than a minimum load, causing the output voltage to vary.
Pin
2
3
9
11
14
16
22
23
F nc
A
-
u
NP
t
U
ion
I
T
-INPUT
OUTPUT CMN
+OUTPUT
+OUTPUT
OUTPUT CMN
+INPUT
+INPUT
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
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1/29/04, eco#041007-1, eco# 050628-1, 060403-7
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