Data Sheet
August 2001
SMC/SMW Dual-Output Series Surface-Mount Power Modules:
18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc Inputs, 10 W
Features
s
Low profile: 10 mm x 30.2 mm x 49.5 mm
(0.39 in. x 1.19 in. x 1.95 in.)
Wide input voltage range: 18 Vdc to 36 Vdc and
36 Vdc to 75 Vdc
Input-to-output isolation: 1500 V
Operating case temperature range: –40 °C to
+105 °C
Overcurrent protection, unlimited duration
Remote on/off
Output voltage adjustment: 90% to 105% of V
O, nom
Output overvoltage protection
Undervoltage lockout
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The SMC/SMW Dual-Output Series Surface-Mount Power
Modules use advanced, surface-mount technology and
deliver high-quality, compact, dc-dc conversion at an eco-
nomical price.
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UL*
60950 Recognized,
CSA
†
C22.2 No. 60950-00
Certified,
VDE
‡
0805 (EN60950) Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives
§
(SMW only)
Within FCC Class A radiated limits
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Applications
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Communication equipment
Computer equipment
Distributed power architectures
The SMC/SMW Dual-Output Series Surface-Mount
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 10 W and efficiencies up to
80%. Built-in filtering for both input and output mini-
mizes the need for external filtering.
These modules are designed and manufactured to
be gull-winged surface-mounted power modules that
are reflowed with other surface-mount components in
a typical surface-mount fashion.
Description
Options
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Negative remote on-off logic
Synchronization
Tight output voltage regulation
Input voltage turn-on adjustment
*
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.)
SMC/SMW Dual-Output Series Surface-Mount Power Modules:
18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc Inputs, 10 W
Data Sheet
August 2001
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
(See Thermal Considerations section.)
Storage Temperature
I/O Isolation Voltage
Device
SMC
SMW
SMW
All
All
All
Symbol
V
I
V
I
V
I, trans
T
C
T
stg
—
Min
0
0
0
–40
–55
—
Typ
—
—
—
—
—
—
Max
50
80
100
105*
120
1500
Unit
Vdc
Vdc
V
°C
°C
Vdc
* Maximum case temperature varies based on power dissipation. See derating curves, Figure 14, for details.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 to V
I, max
; I
O
= I
O, max
)
Inrush Transient
Input Reflected-ripple Current
(5 Hz to 20 MHz; 12 µH source imped-
ance; T
A
= 25 °C; see Figure 7.)
Input Ripple Rejection (100 Hz—120 Hz)
Device
SMC
SMW
SMC
SMW
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
1.2
0.6
0.2
—
Unit
Vdc
Vdc
A
A
A
2
s
mAp-p
All
—
—
45
—
dB
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
fusing 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.
2
Tyco Electronics Corp.
Data Sheet
August 2001
SMC/SMW Dual-Output Series Surface-Mount Power Modules:
18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc Inputs, 10 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage Set Point
(V
I
= V
I, nom
; I
O
= I
O, max
; T
A
= 25 °C)
Device Code
or Suffix
AJ
BK
CL
Output Voltage
(Over all line, load, and temperature
conditions until end of life; see Figure 9.)
AJ
BK
CL
Output Regulation
(For line and load see characteristic
curves.)
Output Ripple and Noise
(Across 2 x 0.47 µF ceramic capacitors;
see Figure 8.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
Output Current
(At I
O
< I
O, min
, the modules may exceed
output ripple specifications, but operation is
guaranteed.)
Output Current-limit Inception
(V
O
= 90% V
O, set
)
Output Short-circuit Current
(V
O
= 0.25 V)
Efficiency
(V
I
= V
I, nom
; I
O
= I
O, max
; T
A
= 25 °C; see
Figure 9.)
Switching Frequency
All
Symbol
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
—
Min
4.75
–4.75
11.40
–11.40
14.25
–14.25
4.5
–4.5
10.80
–10.80
13.50
–13.50
—
Typ
5.0
–5.0
12.0
–12.0
15.0
–15.0
—
—
—
—
—
—
—
Max
5.25
–5.25
12.60
–12.60
15.75
–15.75
5.5
–5.5
13.20
–13.20
16.50
–16.50
—
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
—
AJ
BK, CL
AJ
BK, CL
AJ
BK
CL
AJ
BK
CL
AJ
BK
CL
SMC010xx
SMW010AJ
SMW010BK
SMW010CL
All
—
—
—
—
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
I
O1
, I
O2
η
η
η
η
—
—
—
—
—
0.1
0.06
0.05
—
—
—
—
—
—
TBD
TBD
76
76
—
—
—
—
—
—
—
—
—
—
—
—
—
—
77
78
79
79
265
35
50
120
150
1.0
0.42
0.33
4.0
2.5
2.5
6.0
3.5
3.5
—
—
—
—
—
mVrms
mVrms
mVp-p
mVp-p
A
A
A
A
A
A
A
A
A
%
%
%
%
kHz
Tyco Electronics Corp.
3
SMC/SMW Dual-Output Series Surface-Mount Power Modules:
18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc Inputs, 10 W
Data Sheet
August 2001
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Dynamic Response
(for duals: I
O1
or I
O2
= I
O, max
;
∆I
O
/∆t = 1A/10 µs; V
I
= V
I, nom
; T
A
= 25 °C):
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)
Device Code
or Suffix
Symbol
Min
Typ
Max
Unit
All
All
—
—
—
—
2
1.5
—
—
%V
O, set
ms
All
All
—
—
—
—
2
1.5
—
—
%V
O, set
ms
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Min
—
10
Typ
600
—
Max
—
—
Unit
pF
MΩ
Table 4. General Specifications
Parameter
Calculated MTBF (I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
Min
—
Typ
4,860,000
—
Max
30 (1.05)
Unit
hours
g (oz.)
4
Tyco Electronics Corp.
Data Sheet
August 2001
SMC/SMW Dual-Output Series Surface-Mount Power Modules:
18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc Inputs, 10 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 equivalent
compatible; signal referenced to V
I
(–) terminal.
See Figure 10 and Feature Descriptions.):
Positive Logic— If Device Code Suffix “1” Is
Not Specified:
Logic Low—Module Off
Logic High—Module On
Negative Logic— Device Code Suffix “1”:
Logic Low—Module On
Logic High—Module Off
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
= 10 V)
Output Low Voltage During Logic Low
(I
on/off
= 1 mA)
Turn-on Delay and Rise Times
(At 80% of I
O, max
; T
A
= 25 °C):
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
A
= 25 °C)
Output Voltage Set-point Adjustment Range
Output Overvoltage Protection (clamp)
Device Code
or 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
—
—
—
—
—
—
—
—
1.0
1.2
10
50
1.2
mA
V
V
µA
V
All
T
delay
—
5
20
ms
All
T
delay
—
1
10
ms
All
T
rise
—
0.2
5
ms
All
AJ
BK, CL
AJ
BK
CL
—
—
—
V
O1, clamp
V
O2, clamp
V
O1, clamp
V
O2, clamp
V
O1, clamp
V
O2, clamp
V
uvlo
V
uvlo
—
90
90
5.6
–5.6
13.2
–13.2
16.6
–16.6
11
20
—
—
—
—
—
—
—
—
—
14
27
5
110
100
7.0
–7.0
18.0
–18.0
22.0
–22.0
—
—
%
%V
O, nom
%V
O, nom
V
V
V
V
V
V
V
V
Undervoltage Lockout
SMC
SMW
Tyco Electronics Corp.
5
