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WRB0503T-2W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd.

Part No. WRB0503T-2W
Description  3W SINGLE OUTPUT DC/DC CONVERTER
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Maker  MORNSUN [MORNSUN Science& Technology Ltd.]
Homepage  http://www.mornsun-power.com
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WRB0503T-2W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd.

   
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MORNSUN reserves the copyright For any design change and upgrade, we will not make any prior notification
A/1-2007
Page 2 of 2
COMMON SPECIFICATIONS
Output Short Circuit Protection
Continuous ,Automatic Recovery
Temperature Rise at Full Load
15°C (TYP) 35°C(max)
Cooling
Free Air Convection
Operating Temperature Range
-40°C~+85°C
Storage Temperature Range
-50°C ~+125°C
Lead Temperature***
245°C Max. (10sec)
Storage Humidity Range
≤ 95%
MTBF
>1,000,000 hours
Note: 217
(
70 sec)
TYPICAL CHARECTERISTICS
Operating Temp.( )
C
Temperature Derating Graph
FOOTPRINT DETAILS
123
9 101 112
242 32 2
1615141 3
22,23
2,3
14
16
Oth ers
Vin
GND
+Vo
0V
NC
(Top Vie w)
Pin
Function
OUTLINE DIMENSIONS
(Top View)
R1.5
[R0.06]
1.5
[0.06]
2.5
[0.10]
32.5
[1.28]
27.9
[1.10]
0.3
[0.01]
8.0
[0.31]
7.5
[0.30]
Note: Unit: mm(inch); Tolerance:
±0.25mm.
APPLICATION NOTE
Output Load
In order to ensure the product operate efficiently and reliably, in addition to a max load
(namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure the
specified range of input voltage is not exceeded, the minimum output load no less than 10%
full load,
If the actual load is less than the specified minimum load, the output ripple may
increase sharply. If the actual output power is very small, please add an appropriate resistor as
extra loading,or contact our company for other lower output power products.
Recommended Circuit
All the WRB_T-3W Series have been tested
according to the following recommended testing
circuit before leaving factory. This series should
be tested under load(Figure 1).
DC
DC
Vin
GND
Vout
0V
Cin
If you want to further decrease the input/output
ripple, you can increase capacitance properly or
choose capacitors with low ESR. However, the
capacitance should not be too high(Table 1)
External Capacitor Table(Table 1)
Vin
Cin
Cout
(0~70 )
Cout
(-40~85 )
5V&12V
100uF
24V&48V
22uF
100uF
(electrolytic
capacitor)
47uF
(tantalum
capacitor)
Recommended Reflow Soldering Profil
e
Input Current
Nominal input voltage range.The input current
of the power supply must be sufficient to the
startup current (Ip) of the DC/DC module (Figure
2)
Input Voltage (V)
Input Voltage
Range
Ip
No parallel connection or plug and play.


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