Data Sheet
April 2008
LC/LW005-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 5 W
Features
n
Low profile: 10.2 mm x 25.4 mm x 32 mm
(0.400 in. x 1 in. x 1.26 in.) with standoffs
(9.78 mm (0.385 in.) with standoffs recessed)
Wide input voltage range: 18 Vdc to 36 Vdc or
36 Vdc to 75 Vdc
Input-to-output isolation up to 1500 V
Operating case temperature range: –40 °C to
+105 °C
Overcurrent protection, unlimited duration
Output overvoltage protection
Undervoltage lockout
UL*
1950 Recognized,
CSA
†
C22.2 No. 950-95
Certified,
VDE
‡
0805 (EN60950, IEC950) Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives
‡
Within FCC Class A radiated limits
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n
The LC/LW005-Series Power Modules use advanced, surface-
mount technology and deliver high-quality, compact, dc-dc
conversion at an economical price.
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Applications
n
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Computer equipment
Communications equipment
Distributed power architectures
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Options
n
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Positive remote on-off logic
Short pins: 2.8 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
Synchronization
Tight output voltage tolerance
n
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*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Associa-
tion.
‡
VDE
is a trademark of Verband Deutscher Elektrotechniker e.V.
§ This product is intended for integration into end-use equipment.
All the required procedures for CE marking of end-use equip-
ment should be followed. (The CE mark is placed on selected
products.)
Description
The LC/LW005-Series Power Modules are low-profile, dc-dc converters that operate over an input voltage
range of 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc and provide a precisely regulated output. The output is isolated
from the input, allowing versatile polarity configurations and grounding connections. The modules have a maxi-
mum power rating of 5 W and efficiencies greater than 75%. Built-in filtering for both input and output minimizes
the need for external filtering.
LC/LW005-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 5 W
Data Sheet
April 2008
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Input Voltage:
Continuous
Transient (100 ms)
Operating Case Temperature
Operating Ambient Temperature in
Natural Convection (See Thermal Con-
siderations section.)
Storage Temperature
I/O Isolation Voltage (1 minute)
Device
LC
LW
LW
All
All
Symbol
V
I
V
I
V
I, trans
T
C
T
A
Min
0
0
0
–40
–40
Typ
—
—
—
—
—
Max
50
80
100
105
85
Unit
Vdc
Vdc
V
°C
°C
All
All
T
stg
—
–55
—
—
—
125
1500
°C
Vdc
Electrical Specifications
Table 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 to V
I, max
; I
O
= I
O, max
; see Figures
1 and 2.)
Inrush Transient
Input Reflected-ripple Current
(5 Hz to 20 MHz; 12 µH source
impedance; T
C
= 25 °C; see Figure 16.)
Input Ripple Rejection
(100 Hz—120 Hz)
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The
safety agencies require a normal-blow fuse with a maximum rating of 5 A (see Safety Considerations section).
Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same
type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Device
LC
LW
LC
LW
All
All
Symbol
V
I
V
I
I
I, max
I
I, max
I
2
t
I
I
Min
18
36
—
—
—
—
Typ
24
48
—
—
—
5
Max
36
75
0.6
0.3
0.2
—
Unit
Vdc
Vdc
A
A
A
2
s
mAp-p
All
—
—
45
—
dB
2
Lineage Power
Data Sheet
April 2008
LC/LW005-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 5 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage Set Point
(V
I
= V
I, nom
; I
O
= I
O, max
; T
C
= 25 °C)
Device Code
or Suffix
F
A
B
C
F
A
B
C
A, F
B, C
A, F
B, C
A, F
B, C
Symbol
V
O, set
V
O, set
V
O, set
V
O, set
V
O
V
O
V
O
V
O
—
—
—
—
—
—
Min
3.17
4.85
11.52
14.40
3.13
4.80
11.40
14.25
—
—
—
—
—
—
Typ
—
—
—
—
—
—
—
—
2
0.03
2
0.1
25
0.5
Max
3.43
5.20
12.48
15.60
3.47
5.25
12.60
15.75
5
0.1
10
0.2
100
2.0
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mV
%V
O
mV
%V
O
mV
%V
O
Output Voltage
(Over all line, load, and temperature
conditions until end of life; see
Figure 18.)
Output Regulation:
Line (V
I
= V
I, min
to V
I, max
)
Load (I
O
= I
O, min
to I
O, max
; see
Figure 3.)
Temperature
(T
C
= –40 °C to +85 °C)
Output Ripple and Noise Voltage:
With an External 0.1 µF Ceramic
Output Capacitor (See Figure 17.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
With an External 3.3 µF Ceramic
Output Capacitor:
RMS
Peak-to-peak (5 Hz to 20 MHz)
External Load Capacitance
Output Current
(At I
O
< I
O, min
, the modules may exceed
output ripple specifications, but opera-
tion is guaranteed.)
Output Current-limit Inception
(V
O
= 90% V
O, set
; see Figure 4.)
Output Short-circuit Current
(V
O
= 0.25 V)
Efficiency
(V
I
= V
I, nom
; I
O
= I
O, max
; T
C
= 25 °C;
see Figures 6 through 8.)
All
All
A, F
A, F
A, F
B, C
F
A
B
C
F
A
B, C
F
A
B, C
LC005F
LC005A
LC005B, C
LW005F
LW005A, B, C
All
—
—
—
—
—
—
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
η
η
η
η
η
—
—
—
—
—
0
0
0.12
0.1
0.08
0.06
—
—
—
—
—
—
69
73
71
71
75
—
—
—
—
—
—
—
—
—
—
—
1.7
1.4
0.6
2.4
2.2
1.0
72
76
74
74
78
300
35
150
30
100
470
100
1.21
1.0
0.42
0.33
3.0
2
0.9
4.5
4.0
2.5
—
—
—
—
—
—
mVrms
mVp-p
mVrms
mVp-p
µF
µF
A
A
A
A
A
A
A
A
A
A
%
%
%
%
%
kHz
Switching Frequency
Lineage Power
3
LC/LW005-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 5 W
Data Sheet
April 2008
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Dynamic Response
(ΔI
O
/Δt = 1 A/10 µs; V
I
= V
I, nom
;
T
C
= 25 °C; see Figures 12 and 13.):
Load Change from I
O
= 50% to 75% of
I
O, max
:
Peak Deviation
Settling Time
(V
O
< 10% of peak deviation)
Load Change from I
O
= 50% to 25% of
I
O, max
:
Peak Deviation
Settling Time
(V
O
< 10% of peak deviation)
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Table 4. General Specifications
Parameter
Calculated MTBF
(I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
Hand Soldering
(soldering iron 3 mm (0.125 in.) tip, 425 °C)
Min
—
—
—
Typ
8,400,000
—
—
Max
—
17 (0.6)
12
Unit
hours
g (oz.)
s
Min
—
10
Typ
2300
—
Max
—
—
Unit
pF
M¾
Device Code
or Suffix
Symbol
Min
Typ
Max
Unit
All
All
—
—
—
—
1.5
0.8
—
—
%V
O, set
ms
All
All
—
—
—
—
1.5
0.8
—
—
%V
O, set
ms
4
Lineage Power
Data Sheet
April 2008
LC/LW005-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 5 W
Electrical Specifications
(continued)
Table 5. Feature Specifications
Parameter
Remote On/Off Signal Interface (optional)
(V
I
= 0 V to V
I, max
; open collector or equiva-
lent compatible; signal referenced to V
I
(–)
terminal. See Feature Descriptions section
and Figure 19.):
Positive Logic—Device Code Suffix “4:”
Logic Low—Module Off
Logic High—Module On
Module Specifications:
On/Off Current—Logic Low
On/Off Voltage:
Logic Low
Logic High (I
on/off
= 0)
Open Collector Switch Specifications:
Leakage Current During Logic High
(V
on/off
= 15 V)
Output Low Voltage During Logic Low
(I
on/off
= 10 mA)
Turn-on Delay and Rise Times
(at 80% of I
O, max
; T
C
= 25 °C; see Figures 14
and 15.):
Case 1: On/Off Input Is Set for Unit On and
then Input Power Is Applied (delay from
point at which V
I
= V
I, min
until V
O
= 10% of
V
O, nom
).
Case 2: Input Power Is Applied for at Least
One Second, and then the On/Off Input Is
Set to Turn the Module On (delay from
point at which on/off input is toggled until
V
O
= 10% of V
O, nom
).
Output Voltage Rise Time
(time for V
O
to rise from 10% of V
O, nom
to
90% of V
O, nom
)
Output Voltage Overshoot
(at 80% of I
O, max
; T
C
= 25 °C)
Output Overvoltage Protection (clamp)
Device
Code Suffix
Symbol
Min
Typ
Max
Unit
All
All
All
All
All
I
on/off
V
on/off
V
on/off
I
on/off
V
on/off
—
–0.7
—
—
—
5.0
—
—
—
—
10
1.2
15
50
1.2
mA
V
V
µA
V
All
T
delay
—
5
20
ms
All
T
delay
—
4
10
ms
All
T
rise
—
0.3
5
ms
All
F
A
B
C
LCxxx
LWxxx
—
V
O, clamp
V
O, clamp
V
O, clamp
V
O, clamp
V
uvlo
V
uvlo
—
3.5
5.4
12.7
15.8
11
20
0
—
—
—
—
14
27
5
6.2
7.0
16.0
21.0
—
—
%
V
V
V
V
V
V
Undervoltage Lockout
Lineage Power
5
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