MSAU100 Series
1W, Miniature SMD, Single Output DC/DC Converters
Key Features
Efficiency up to 82%
1000VDC Isolation
MTBF > 2,000,000 Hours
Low Cost
Input 5 and 12VDC
Output 3.3, 5, 9, 12 and 15VDC
Temperature Performance -40] to +85]
Lead Frame Technology
UL 94V-0 Package Material
Interanl SMD Construction
Minmax's MSAU100 1W DC/DC's are in "gull-wing" SMT package,
weigh a mere 1.5 grams and meet 245]/10sec in solder-reflow for lead
free process.
The series consists of 9 models with input voltages of 5V and
12VDC which offers standard single output voltages of 3.3V, 5V, 9V, 12V
and 15VDC for the choice.
Their impressive guaranteed efficiencies enable all models to deliver
their fully rated output power from -40] to +85] without heat sinking
or forced-air cooling.
The MSAU100 series is an excellent selection for a variety of
applications including data communication equipments, distributed power
systems, telecommunication equipments and industrial robot systems.
The MSAU100 units are available
in tape and reel package.
I/O Isolation
Low Cost
Low Profile
SMD
1000
VDC
$
Block Diagram
+Vo
+Vin
Bipolar
Push-Pull
Inverter
-Vin
-Vo
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MSAU100 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Load
Regulation
Efficiency
VDC
MSAU101
MSAU102
MSAU103
MSAU104
MSAU105
MSAU111
MSAU112
MSAU113
MSAU114
12
( 10.8 ~ 13.2 )
5
( 4.5 ~ 5.5 )
VDC
5
9
12
15
3.3
5
9
12
15
Max.
mA
200
110
84
67
300
200
110
84
67
Min.
mA
4
2
1.5
1
60
4
2
1.5
1
@Max. Load
mA (Typ.)
250
254
252
248
264
103
106
104
102
@No Load
mA (Typ.)
% (Max.)
10
10
8
7
10
8
8
5
5
@Max. Load
% (Typ.)
80
78
80
81
75
81
78
81
82
30
15
Absolute Maximum Ratings
Parameter
Input Surge Voltage
( 1000 mS )
Internal Power Dissipation
5VDC Input Models
12VDC Input Models
Min.
-0.7
-0.7
---
---
Max.
9
18
260
450
Unit
VDC
VDC
]
mW
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.
Lead Temperature (1.5mm from case for 10 Sec.)
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conditions
Ambient
Case
Min.
-40
-40
-40
---
Free-Air Convection
Max.
+85
+90
+125
95
Unit
]
]
]
%
5. All DC/DC converters should be externally fused
at the front end for protection.
6. Other input and output voltage may be available,
please contact factory.
7. Specifications subject to change without notice.
Input Specifications
Parameter
Input Voltage Range
Reverse Polarity Input Current
Input Filter
Model
5V Input Models
12V Input Models
All Models
Min.
4.5
10.8
---
Typ.
5
12
---
Max.
5.5
13.2
0.3
Unit
VDC
A
Internal Capacitor
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MINMAX
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MSAU100 Series
Output Specifications
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Load
Temperature Coefficient
Output Short Circuit
Over Line, Load & Temp.
For Vin Change of 1%
Io=20% to 100%
Conditions
Min.
---
---
---
---
---
120
---
0.5 Second Max.
Typ.
{1.0
{1.2
60
---
---
---
{0.01
Max.
{3.0
{1.5
120
150
5
---
{0.02
Unit
%
%
%
mV P-P
mV P-P
mV rms
%
%/]
See Model Selection Guide
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
Min.
1000
1100
1000
---
50
2000
Typ.
---
---
---
40
100
---
Max.
---
---
---
100
140
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Capacitive Load
Models by Vout
Maximum Capacitive Load
3.3V
33
5V
33
9V
33
12V
33
15V
33
Unit
uF
Input Fuse Selection Guide
5V Input Models
500mA Slow - Blow Type
12V Input Models
200mA Slow - Blow Type
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MSAU100 Series
90
80
Efficiency (%)
70
60
50
40
60
50
100
90
Efficiency (%)
80
70
30
Low
Nom
Input Voltage (V)
High
20
10
20
40
60
80
100
Load Current (%)
Efficiency vs Input Voltage
Efficiency vs Output Load
100
80
Output Power (%)
100LFM
400LFM
200LFM
60
Natural
convection
40
20
0
-40
〜
50
60
70
80
]
90
100
110
Ambient Temperature
Derating Curve
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MSAU100 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
+
Lin
Current
Probe
+Vin
+Out
Load
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+Out
Load
KHz) capacitor of 2.2uF for the 5V input devices, and a 1.0uF
for the 12V devices.
Output Ripple Reduction
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 0.47uF
capacitors at the output.
DC / DC
Converter
-Vin
-Out
Cin
Peak-to-Peak Output Noise Measurement Test
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.
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
Copper Strip
Cout
Scope
Resistive
Load
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
Cout
Load
Thermal Considerations
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.
Design & Feature Considerations
Maximum Capacitive Load
The MSAU100 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.
For optimum performance we recommend 33uF maximum
capacitive load
.
The maximum capacitance can be found in the data sheet.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
Input Source Impedance
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.
Capacitor mounted close to the power module helps
ensure stability of the unit, it is recommeded to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
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