MSLU400 Series
2W, Miniature SMD, Single & Dual Output DC/DC Converters
Key Features
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1500
VDC
SMD
I/O Isolation
Efficiency up to 80%
1500VDC Isolation
MTBF > 2,000,000 Hours
Low Cost
Input 5, 12 and 24VDC
Output 3.3, 5, 12, {5, {12 and {15VDC
Temperature Performance -25] to +75]
Lead Frame Technology
UL 94V-0 Package Material
Internal SMD Construction
$
Low Cost
Low Profile
Minmax's MSLU400 2W DC/DC's are in "gull-wing" SMT package, weigh a mere 2.2 grams. The series consists of 18 models with input
voltages of 5V,12V and 24VDC which offers standard output voltages of 3.3V, 5V, 12V, {5V, {12V and {15VDC for the choice.
Their impressive guaranteed efficiencies enable all models to deliver their fully rated output power from -25] to +75] without heat
sinking or forced-air cooling.
The MSLU400 series are excellent selections for a variety of applications including data communication equipments, distributed power
systems, telecommunication equipments and industrial robot systems.
The MSLU400 units are available in tape and reel package.
Absolute Maximum Ratings
Parameter
Environmental Specifications
Min.
Max.
Unit
Parameter
Conditions
Min.
Max.
Unit
5VDC Input Models
-0.7
9
VDC
Operating Temperature
Ambient
-25
+75
]
12VDC Input Models
-0.7
18
VDC
Operating Temperature
Case
-25
+90
]
24VDC Input Models
-0.7
30
VDC
Storage Temperature
-25
+125
]
Lead Temperature (1.5mm from case for 10 Sec.)
-----
300
]
Humidity
---
95
%
650
mW
Cooling
Free-Air Convection
Input Surge Voltage
( 1000 mS )
Internal Power Dissipation
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
Leadfree Reflow Solder Process as per IPC/JEDEC J-STD-020C peak
temp. 245C/10 sec.
1
MINMAX
REV:4 2009/01/20
MSLU400 Series
Model Selection Guide
Model
Number
MSLU401
MSLU402
MSLU404
MSLU406
MSLU408
MSLU409
MSLU411
MSLU412
MSLU414
MSLU418
MSLU419
MSLU421
MSLU422
MSLU424
MSLU428
MSLU429
Input
Voltage
Output
Voltage
VDC
VDC
3.3
5
12
{5
{12
{15
3.3
5
12
{12
{15
3.3
5
12
{12
{15
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
24
(21.6 ~ 26.4)
Output Current
Max.
mA
500
400
165
{200
{83
{66
500
400
165
{83
{66
500
400
165
{83
{66
Input Current
Min.
mA
10
8
3
{4
{1.5
{1
10
8
3
{1.5
{1
10
8
3
{1.5
{1
@Max. Load
mA (Typ.)
471
548
514
541
524
521
191
222
209
208
206
96
111
105
105
104
Load
Regulation
@No Load
mA (Typ.)
60
30
15
% (Max.)
11
11
11
10
7
7
8
8
5
5
5
8
8
5
5
5
Efficiency
@Max. Load
% (Typ.)
70
73
77
74
76
76
72
75
79
80
80
72
75
79
79
79
Capacitive Load
Models by Vout
Maximum Capacitive Load
3.3V
5V
12V
{5V #
{12V #
{15V #
Unit
47
47
10
10
4.7
4.7
uF
# For each output
Input Fuse Selection Guide
5V Input Models
12V Input Models
24V Input Models
1000mA Slow - Blow Type
500mA Slow - Blow Type
200mA Slow - Blow Type
Input Specifications
Parameter
Input Voltage Range
Reverse Polarity Input Current
Input Filter
REV:4 2009/01/20
Model
Min.
Typ.
Max.
5V Input Models
4.5
5
5.5
12V Input Models
10.8
12
13.2
24V Input Models
21.6
24
26.4
---
---
0.3
All Models
MINMAX
Unit
VDC
A
Internal Capacitor
2
MSLU400 Series
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
Dual Output, Balanced Loads
---
{0.1
{1.0
%
Line Regulation
For Vin Change of 1%
---
{1.2
{1.5
Load Regulation
Io=20% to 100%
Output Voltage Balance
See Model Selection Guide
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line, Load & Temp.
%
%
---
100
120
mV P-P
---
---
200
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms
Temperature Coefficient
---
{0.01
{0.02
%/]
Output Short Circuit
0.5 Second Max.
General Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage Rated
60 Seconds
1500
---
---
VDC
Flash Tested for 1 Second
1650
---
---
VDC
Isolation Resistance
Isolation Voltage Test
500VDC
10
---
---
G[
Isolation Capacitance
100KHz,1V
---
60
100
pF
50
100
120
KHz
2000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Notes :
1. Specifications typical at Ta=+25], resistive load, nominal input voltage, rated output current unless otherwise noted.
2. Ripple & Noise measurement bandwidth is 0-20 MHz.
3. These power converters require a minimum output loading to maintain specified regulation.
4. Operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed.
5. All DC/DC converters should be externally fused on the front end for protection.
6. Other input and output voltage may be available, please contact factory.
7. Specifications subject to change without notice.
8. It is not recommended to use water-washing process on SMT units.
Block Diagram
Single Output
Dual Output
+Vo
+Vin
+Vo
+Vin
Bipolar
Push-Pull
Inverter
Bipolar
Push-Pull
Inverter
-Vin
-Vin
-Vo
3
Com.
MINMAX
-Vo
REV:4 2009/01/20
MSLU400 Series
All other types.
+20%
+20%
+20%
+15%
+15%
+15%
+15%
+10%
+10%
+10%
Max.
+5%
Output Voltage(%)
Output Voltage(%)
3.3V & 5V output types.
+20%
+5%
Typ.
Vnom
Vnom
Min.
-5%
-5%
-10%
0%
20%
40%
60%
80%
+5%
+5%
Typ.
Vnom
Vnom
Min.
-5%
-5%
-10%
0%
-10%
100%
20%
40%
60%
80%
-10%
100%
Output Load Current (%)
Output Load Current (%)
Tolerance Envelopes Graph (3.3V & 5V Output)
REV:4 2009/01/20
+10%
Max.
Tolerance Envelopes Graph (All other Output)
MINMAX
4
MSLU400 Series
Test Configurations
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor
Lin (4.7uH) and Cin (220uF, ESR < 1.0[ 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.
To Oscilloscope
+
+
Battery
+Vin
Lin
DC / DC
Converter
Current
Probe
Cin
+Out
-Vin
Capacitor mounted close to the power module helps
ensure stability of the unit, it is comended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 2.2uF for the 5V input devices, a 1.0uF for
the 12V input devices and a 0.47uF for the 24V devices.
Output Ripple Reduction
+
+Vin
+
DC Power
Source
Load
DC / DC
Converter
-Vin
A good quality low ESR capacitor placed as close as
practicable across the load will give the best ripple and noise
performance.
To reduce output ripple, it is recommended to use 1.5uF
capacitors at the output.
+
+Vin
-Vin
+Vin
Copper Strip
Cout
-Out
+Out
Scope
-
-Vin
+
+Vin
Cout
Load
-Out
Resistive
Load
Copper Strip
Cout
Dual Output
DC / DC
Converter
Com.
Copper Strip
-Vin
-Out
Copper Strip
Cout
Scope
-
Resistive
Load
+Out
Dual Output
Com.
DC / DC
Converter
DC Power
Source
Copper Strip
-Vin
Cout
Load
-Out
Scope
Thermal Considerations
Design & Feature Considerations
Maximum Capacitive Load
The MSLU400 series has limitation of maximum connected
capacitance at the output.
The power module may be operated in current limiting
mode during start-up, affecting the ramp-up and the startup
time.
The maximum capacitance can be found in the data sheet.
Input Source Impedance
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 an experimental apparatus.
Position of air velocity
probe and thermocouple
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.
5
+Out
Single Output
DC / DC
Converter
DC Power
Source
Single Output
DC / DC
Converter
-Out
-Out
Use a Cout 0.33uF ceramic capacitor.
Scope measurement should be made by using a BNC
socket, measurement bandwidth is 0-20 MHz. Position the
load between 50 mm and 75 mm from the DC/DC Converter.
+Out
Load
Cin
-
Peak-to-Peak Output Noise Measurement Test
+Vin
+Out
MINMAX
15mm / 0.6in
50mm / 2in
Air Flow
DUT
REV:4 2009/01/20
MSLU400 Series
Mechanical Dimensions
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
0.25 [0.01]
5
9.3 [0.37]
7.62mm
3.04
[0.12]
2
2.54
[0.10]
4
1.8mm
(Magnification of A)
5.08
[0.20]
13.1mm
1
0~4
°
R0.5
13.7 [0.54]
11.3mm
8
13.3 [0.52]
8.9 [0.35]
7.0 [0.28]
1.6 [0.06]
SEATING PLANE
2.54mm
1.3mm Min
A
1.5 ±0.1
[0.06±0.004]
0.3 [0.01]
0.6 [0.02]
8.6 [0.34]
13.0 [0.51]
1.5 ±0.1
[0.06±0.004]
6.15 [0.24]
c 0.15 M S
6.15 [0.24]
12.3 [0.48]
Dual Output
0.25 [0.01]
7
9.3 [0.37]
10
2
4
7.62mm
0~4
°
R0.5
1
5
1.8mm
5.08
[0.20]
(Magnification of A)
2.54
[0.10]
16.3 [0.64]
11.3mm
2.54
[0.10]
13.1mm
3.07
[0.12]
16.0 [0.63]
8.6 [0.34]
SEATING PLANE
8.9 [0.35]
0.3 [0.01]
0.6 [0.02]
1.6 [0.06]
7.0 [0.28]
15.7 [0.62]
2.54mm
1.3mm Min
A
1.5 ±0.1
[0.06±0.004]
6.15 [0.24]
1.5 ±0.1
[0.06±0.004]
c 0.15 M S
6.15 [0.24]
12.3 [0.48]
Tolerance
Pin
REV:4 2009/01/20
Millimeters
Inches
X.X{0.25
X.XX{0.01
X.XX{0.13
X.XXX{0.005
{0.05
{0.002
MINMAX
6
MSLU400 Series
Pin Connections
Physical Characteristics
Pin
Single Output
Dual Output
1
-Vin
-Vin
2
+Vin
+Vin
4
-Vout
Common
5
+Vout
-Vout
7
No Pin
+Vout
8
NA
No Pin
10
No Pin
NA
Case Size
(Single Output)
:
Case Size
(Dual Output)
:
Case Material
:
Weight (Single Output) :
13.7*9.3*8.7 mm
0.54*0.37*0.34 inches
16.3*9.3*8.7 mm
0.64*0.37*0.34 inches
Non-Conductive Black Plastic
Weight (Dual Output)
:
1.5g
2.2g
Flammability
:
UL94V-0
NA : Not Available for Electrical Connection
7
MINMAX
REV:4 2009/01/20