MBU100 Series
1W, Ultra Miniature SIP, Single Output DC/DC Converter
Key Features
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Efficiency up to 80%
1000VDC Isolation
MTBF > 2,000,000 Hours
Low Cost
Input 5, 12 and 24VDC
Output 5, 9, 12 and 15VDC
Temperature Performance -40] to +75]
UL 94V-0 Package Material
Internal SMD Construction
Industry Standard Pinout
Taking up as little as 0.18 square inches of board space,
Minmax's MBU100 1W DC/DC's are specially designed to
provide power distribution applications where space is critical
in an ultra-miniature SIP package.
The series consists of 12 models with input voltages of
5V, 12V and 24VDC which offers standard single output
voltages of 5V, 9V, 12V, 15VDC.
The MBU100 series is an excellent selection for a variety
of applications including distributed power systems, mixed
analog/digital subsystems, portable test equipments, local
power networks and battery backed systems.
$
Low Cost
1000
VDC
I/O Isolation
Low Profile
Block Diagram
+Vo
+Vin
Bipolar
Push-Pull
Inverter
-Vin
-Vo
1
MINMAX
REV:0 2005/04
MBU100 Series
Model Selection Guide
Model
Number
MBU101
MBU102
MBU103
MBU104
MBU111
MBU112
MBU113
MBU114
MBU121
MBU122
MBU123
MBU124
Input
Voltage
Output
Voltage
VDC
VDC
5
9
12
15
5
9
12
15
5
9
12
15
5
(4.5~5.5)
12
(10.8~13.2)
24
(21.6~26.4)
Output Current
Max.
mA
200
110
84
67
200
110
84
67
200
110
84
67
Input Current
Min.
mA
4
2
1.5
1
4
2
1.5
1
4
2
1.5
1
@Max. Load
mA (Typ.)
290
260
262
258
117
107
106
105
60
54
53
53
Load
Regulation
@No Load
mA (Typ.)
30
13
7
% (Max.)
11
8
7
6
9
5
5
4
8
5
4
4
Efficiency
@Max. Load
% (Typ.)
69
76
77
78
71
77
79
80
70
76
79
79
Notes :
Absolute Maximum Ratings
Parameter
5VDC Input Models
Input Surge Voltage
12VDC Input Models
( 1000 mS )
24VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Min.
-0.7
-0.7
-0.7
-----
Max.
9
18
30
260
450
Unit
VDC
VDC
VDC
]
mW
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
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 at
the front end for protection.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conditions
Ambient
Case
Min.
Max.
-40
+75
-40
+90
-40
+125
--95
Free-Air Convection
Unit
]
]
]
%
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
Model
Min.
Typ.
Max.
5V Input Models
4.5
5
5.5
12V Input Models
10.8
12
13.2
21.6
24
26.4
---
---
0.3
24V Input Models
Reverse Polarity Input Current
Input Filter
REV:0 2005/04
All Models
MINMAX
Unit
VDC
A
Internal Capacitor
2
MBU100 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
Conditions
For Vin Change of 1%
Io=20% to 100%
Over Line, Load & Temp.
Min.
Typ.
Max.
--{1.0
{3.0
--{1.2
{1.5
See Model Selection Guide
--100
150
----200
----5
120
------{0.01
{0.02
0.5 Second Max.
Unit
%
%
%
mV P-P
mV P-P
mV rms
%
%/]
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
MIL-HDBK-217F @ 25], Ground Benign
Min.
1000
1100
1000
--50
2000
Typ.
------60
90
---
Max.
------100
110
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Capacitive Load
Models by Vout
Maximum Capacitive Load
5V
33
9V
33
12V
33
15V
33
Unit
uF
Input Fuse Selection Guide
5V Input Models
500mA Slow - Blow Type
3
12V Input Models
200mA Slow - Blow Type
MINMAX
24V Input Models
100mA Slow - Blow Type
REV:0 2005/04
MBU100 Series
90
100
80
Efficiency (%)
Efficiency (%)
90
80
70
70
60
50
40
60
50
30
20
Low
Nom
High
10
20
40
Input Voltage (V)
Efficiency vs Input Voltage
80
100
Efficiency vs Output Load
100
100
400LFM
60
Natural
convection
200LFM
40
20
80
Output Power (%)
100LFM
80
Output Power (%)
60
Load Current (%)
60
100LFM
200LFM
Natural
convection
400LFM
40
20
0
0
〜
-40
50
60
70
80
Ambient Temperature
90
100
110
50
60
70
80
Ambient Temperature
]
Derating Curve ( 5V Output Only )
REV:0 2005/04
〜
-40
90
100
110
]
Derating Curve ( All Other Output )
MINMAX
4
MBU100 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
Current
Probe
Cin
-Vin
+Out
-Vin
Load
Cin
-Vin
-Out
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 1uF
capacitors at the output.
Load
-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.
Single Output
DC / DC
Converter
DC / DC
Converter
-
Peak-to-Peak Output Noise Measurement Test
+Vin
+
DC Power
Source
+Out
Output Ripple Reduction
+Out
DC / DC
Converter
+Vin
+Vin
Single Output
DC / DC
Converter
DC Power
Source
-
+Out
-Vin
Cout
Load
-Out
Copper Strip
Cout
Scope
Thermal Considerations
Resistive
Load
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.
-Out
Design & Feature Considerations
Maximum Capacitive Load
The MBU100 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 for devices.
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 recommended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 1.5uF for the 5V input devices, a 1.0uF for
the 12V input devices and a 0.47uF for the 24V devices.
5
MINMAX
REV:0 2005/04
MBU100 Series
Mechanical Dimensions
Connecting Pin Patterns
Bottom View ( 2.54 mm / 0.1 inch grids )
0.25 [0.010]
2.54 [0.100]
10.5 [0.41]
2
3
10.2 [0.40]
4
T
1
1.8 [0.07]
1.9 [0.08]
3.2 [0.13]
0.5 [0.02]
11.5 [0.45]
T: 6.1(0.24) for 5V&12V Input Models
T: 7.1(0.28) for 24V Input Models
Tolerance
Pin
Millimeters
Inches
X.X{0.25
X.XX{0.01
X.XX{0.13
{0.05
X.XXX{0.005
{0.002
Pin Connections
Physical Characteristics
Pin
Function
1
-Vin
2
+Vin
3
-Vout
4
+Vout
11.5*6.1*10.2 mm
Case Size
:
(5 & 12V Input)
0.45*0.24*0.40 inches
Case Size
(24V Input)
:
0.45*0.28*0.40 inches
Case Material
:
Weight
:
11.5*7.1*10.2mm
Non-Conductive Black Plastic
1.3g (5 & 12V Input)
1.7g (24V Input)
The MBU100 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical
characteristics over a wide temperature range or in high humidity environments.
The encapsulant and unit case are both rated to UL 94V-0 flammability specifications.
Leads are tin plated for improved solderability.
REV:0 2005/04
MINMAX
6