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B0515LT-2W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd.

Part # B0515LT-2W
Description  DUAL/SINGLE OUTPUT, SMD, DC-DC CONVERTER
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Manufacturer  MORNSUN [MORNSUN Science& Technology Ltd.]
Direct Link  http://www.mornsun-power.com
Logo MORNSUN - MORNSUN Science& Technology Ltd.

B0515LT-2W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd.

  B0515LT-2W Datasheet HTML 1Page - MORNSUN Science& Technology Ltd. B0515LT-2W Datasheet HTML 2Page - MORNSUN Science& Technology Ltd.  
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MORNSUN reserves the copyright
Specifications subject to change without notice.
A_LT-2W & B_LT-2W
A/1-2008
Page 2 of 2
ISOLATION CHARACTERISTICS
Item
Test Conditions
Min
Typ
Max
Units
Isolation voltage
Tested for 1 minute and 1mA max
1000
VDC
Isolation resistance Test at 500VDC
1000
M
Ω
TYPICAL CHARACTERISTICS
Operating Temp.( C)
o
RECOMMENDED REFLOW SOLDERING PROFILE
0
50
100
150
200
250
Ti m e (s ec .)
220
10
M ax
S ec
P eak.Tem p 260
90
M ax
( > 220
)
S ec
C
C
C
OUTLINE DIMENSIONS & PIN CONNECTIONS
1.27
2.54
1.30 0.13
5.0 MAX
(0.050)
(0.100)
2 3
5 67
8
9
10
12
13
14
17.78 (0.700)
(0.052 0.005)
A
A
FOOTPRINT DETAILS
Pin
S ingles
Duals
1
2
5
7
6
Vin
GND
NC
+Vo
0V
Vin
GND
-Vo
+Vo
0V
10
NC
-Vo
Others
NC
NC
NC:No Connection
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*0.1inch)
Dual output & Singl e Output
First Angle Projection
Note:
Unit:mm(inch)
Pi n section:0.60*0.25mm(0.024*0.010inch)
Pi n tolerances: 0.10mm( 0.004inch)
General tol erances: 0.25mm( 0.010inch)
1
13 12
10 98
14
2 3
5 67
1
2.00
(0.079)
1.00
(0.039)
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum
output load is not less than 10% of the full load, and that this product should never be
operated under no load! If the actual output power is very small, please connect a resistor
with proper resistance at the output end in parallel to increase the load, or use our company
’s
products with a lower rated output power (A_T -1W/B_T-1W series).
Overload Protection
Under norm al operating conditions, the output
circuit of these products has no protection against
overload. The simplest method is to connect a
self-recovery fuse in series at the input end or add a
circuit breaker to the circuit.
Recommended
testing and application circuit
If you want to further decrease the input/output
ripple, an
“LC” filtering network may be connected to
the input and output ends of the DC/DC converter,
see (Figure 1).
Dual Out put
Singl e Output
Vin
GND
+Vo
0V
DC
Cin
L
L
DC
L Cout
Cout
-Vo
L
Vin
GND
+Vo
0V
DC
Cin
L
DC
Cout
(Figure 1)
It should also be noted that the inductance and the
frequency of the
“LC” filtering network should be
staggered with the DC/DC frequency to avoid mutual
interference. However, the capacitance of the output
filter capacitor must be proper. If the capacitance is
too big, a startup problem might arise. For every
channel of output, provided the safe and reliable
operation is ensured, the recommended capacitance
of its filter capacitor sees (Table 1).
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
(VDC)
Cin
(uF)
Single
Vout
(VDC)
Cout
(uF)
Dual
Vout
(VDC)
Cout
(uF)
5
4.7
5
10
±5
4.7
12
2.2
9
4.7
±9
2.2
-
-
12
2.2
±12
1
-
-
15
1
±15
0.47
It
’s not recommended to connect any external capacitor in
the application field with less than 0.5 watt output.
Output
Voltage
Regulation
and
Over-voltage
Protection Circuit
The simplest device for output voltage regulation,
over-voltage and over-current protection is a linear
voltage regulator with overheat protection that is
connected to the input or output end in series (Figure
2).
Dua l O u tp ut
S i ng l e O u tput
Vin
GND
0V
+Vout
DC DC
-Vout
Vin
GND
0V
+Vout
DC DC
REG
REG
REG
REG
REG
(Figure 2)
No parallel connection or plug and play.


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