Data Sheet
January 2002
SMLW010 Single-Output Low-Profile
Power Modules: 36 Vdc to 75 Vdc Input; 10 W
Features
■
Low profile: 8.2 mm x 22.6 mm x 47.8 mm
(0.323 in. x 0.89 in. x 1.88 in.)
Wide input voltage range: 36 Vdc to 75 Vdc
Input-to-output isolation: 1500 V
Operating case temperature range: –40 °C to
+105 °C
Overcurrent protection, unlimited duration
Positive remote on/off logic
Output voltage adjustment: 90% to 110% of V
O, nom
Output overvoltage protection
Undervoltage lockout
■
■
■
■
■
■
The SMLW010 Single-Output, Low-Profile, PCB Mount Power
Modules use advanced, surface-mount technology and
deliver high-quality, compact, dc-dc conversion at an eco-
nomical price.
■
■
■
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
‡
Within FCC Class A radiated limits
Applications
■
■
■
■
■
Communications equipment
Computer equipment
Distributed power architectures
Surface-mount applications
■
Options
■
Synchronization
Description
The SMLW010 Single-Output, Low-Profile, PCB Mount Power Modules are low-profile, dc-dc converters that
operate over an input voltage range of 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. Built-in filtering for
both input and output minimizes 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.
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Association.
‡ This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should
be followed. (The CE mark is placed on selected products.)
SMLW010 Single-Output Low-Profile
Power Modules: 36 Vdc to 75 Vdc Input; 10 W
Data Sheet
January 2002
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute 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 (for 1 minute)
* See derating curves, Figure 8, for details.
Device
SMLW
All
All
All
All
Symbol
V
I
V
I, trans
T
C
T
stg
—
Min
0
0
–40
–55
—
Typ
—
—
—
—
—
Max
80
100
105*
125
1500
Unit
Vdc
V
°C
°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
)
Inrush Transient
Input Reflected-ripple Current
(5 Hz to 2 0MHz; 12 µH source imped-
ance; T
A
= 25 °C; see Figure 1 and
Design Considerations section.)
Input Ripple Rejection (100 Hz—120 Hz)
Device
SMLW
SMLW
All
All
Symbol
V
I
I
I, max
I
2
t
I
I
Min
36
—
—
—
Typ
48
—
—
2
Max
75
0.6
0.2
—
Unit
Vdc
A
A
2
s
mAp-p
All
—
—
50
—
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
January 2002
SMLW010 Single-Output Low-Profile
Power Modules: 36 Vdc to 75 Vdc Input; 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)
Output Voltage
(Over all line, load, and temperature conditions
until end of life; see Figure 3.)
Output Regulation:
Line (V
I
= V
I, min
to V
I, max
)
Load (I
O
= I
O, min
to I
O, max
)
Temperature (T
C
= –40 °C to +85 °C)
Output Ripple and Noise Voltage
(Across one 0.1 µF ceramic capacitor; see
Figure 2.):
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 operation is guaran-
teed. For A, and G codes, the output voltage
may exceed specifications when I
O
< I
O, min
.)
Output Current-limit Inception
(V
O
= 90% V
O, set
)
Output Short-circuit Current
(V
O
= 0.25 V at 25 °C)
* For output voltages below 2.5 V, the G is trimmable down to 1.5 V.
Device Code
or Suffix
G*
A
G
A
Symbol
V
O, set
V
O, set
V
O
V
O
Min
2.45
4.85
2.41
4.80
Typ
2.5
5.0
—
—
Max
2.55
5.15
2.59
5.20
Unit
Vdc
Vdc
Vdc
Vdc
A, G
A, G
A, G
—
—
—
—
—
—
—
—
—
—
—
—
1
0.01
10
0.1
25
0.5
—
—
—
—
—
—
mV
%V
O
mV
%V
O
mV
%V
O
A, G
A, G
A, G
G
A
—
—
—
I
O
I
O
—
—
0
0.15
0.10
—
—
—
—
—
25
75
220
3.0
2.0
mVrms
mVp-p
µF
A
A
All
All
I
O
I
O
—
—
115
200
—
—
%I
O, max
%I
O, max
Tyco Electronics Corp.
3
SMLW010 Single-Output Low-Profile
Power Modules: 36 Vdc to 75 Vdc Input; 10 W
Data Sheet
January 2002
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Efficiency
(V
I
= V
I, nom
; I
O
= I
O, max
; T
A
= 25 °C; see
Figure 3.)
Switching Frequency
Dynamic Response
(∆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)
* For output voltages below 2.5 V, the G is trimmable down to 1.5 V.
† Engineering estimate.
Device Code
or Suffix
SMLW010G
SMLW010A
A
G
Symbol
η
η
—
—
Min
—
—
—
—
Typ
73
79
475
350
Max
—
—
—
—
Unit
%
%
kHz
kHz
All
All
All
All
—
—
—
—
—
—
—
—
3
1.5
3
1.5
—
—
—
—
%V
O, set
ms
%V
O, set
ms
Table 3. Isolation Specifications
Parameter
Isolation Capacitance (engineering estimate)
Isolation Resistance
Device
All
All
Min
—
10
Typ
1100
—
Max
—
—
Unit
pF
MΩ
Table 4. General Specifications
Parameter
Calculated MTBF
(I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight (engineering estimate)
Device
All
All
—
Min
Typ
5,500,000
—
17 (0.6)
Max
Unit
hours
g (oz.)
4
Tyco Electronics Corp.
Data Sheet
January 2002
SMLW010 Single-Output Low-Profile
Power Modules: 36 Vdc to 75 Vdc Input; 10 W
Electrical Specifications
(continued)
Table 5. Feature Specifications
Parameter
Remote On/Off Signal Interface
(V
I
= V
I, min
to V
I, max
; open collector or
equivalent compatible; signal referenced to
V
I
(–) terminal. See Figure 4 and Feature
Descriptions.):
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 mA)
Open Collector Switch Specifications:
Leakage Current During Logic High
(V
on/off
= 6 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 Logic High 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 Logic High (Delay from Point at Which
V
on/off
= 0.9 V 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)
Undervoltage Lockout
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
6
50
1.2
mA
V
V
µA
V
All
T
delay
—
15
60
ms
All
T
delay
—
4
10
ms
All
All
A
G
G
A
All
T
rise
—
V
trim
V
trim
V
O, clamp
V
O, clamp
—
—
—
90
60
3.0
5.6
20
2
—
—
—
—
—
27
10
5
110
110
5.7
7.7
—
ms
%
%V
O, nom
%V
O, nom
V
V
V
Tyco Electronics Corp.
5
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