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B0303LD-1W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd.

Part # B0303LD-1W
Description  DUAL/SINGLE OUTPUT 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.

B0303LD-1W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd.

  B0303LD-1W Datasheet HTML 1Page - MORNSUN Science& Technology Ltd. B0303LD-1W Datasheet HTML 2Page - MORNSUN Science& Technology Ltd.  
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MORNSUN reserves the copyright
Specifications subject to change without notice.
A_D-1W & B_LD-1W
A/2-2008
Page 2 of 2
OUTPUT SPECIFICATIONS
Item
Test conditions
Min
Typ
Max
Units
Output power
0.1
1
W
(3.3V output)
±1.5
Line regulation
For Vin change
of 1%
(Other output)
±1.2
(3.3V output)
12
20
(5V output)
10.5
15
(9V output)
8.3
15
(12V output)
6.8
15
Load regulation
10% to 100%
load
(15V output)
6.3
15
%
Output voltage accuracy
See tolerance envelope graph
Temperature drift
100% full load
0.03
%/
°C
(AXXXXD-1W)
50
75
(BXXXXD-1W)
75
100
Ripple & Noise*
20MHz
Bandwidth
(A/BXX24D-1W)
100
150
mVp-p
Switching frequency Full load, nominal input
100
KHz
*Test ripple and noise by
“parallel cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
1.All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2.Dual output models unbalanced load:
±5%.
TYPICAL CHARACTERISTICS
Operating Temp.( C)
o
OUTLINE DIMENSIONS & PIN CONNECTIONS
Dual Output
Single Output
Pin
Single
Dual
FO OTP RINT DE TAILS
RECO MMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
Note:
Unit:mm(inch)
Pin secti on:0.50*0.30mm( 0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
First Angle Projec tion
1
7
8
9
11
14
1
7
8
9
11
14
1
7
8
9
14
1
8
9
11
Vin
GND
0V
+Vo
No Pin
V in
GND
+ Vo
NC
NC
0V
-Vo
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_D -W25/B_LD-W25 series)
Overload Protection
Under
normal
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 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).
Vin
GND
+Vo
0V
DC
Cin
L
L
DC
L Cout
Cout
-Vo
Dual Output
L
Single Output
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
15
2.2
12
2.2
±12
1
24
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).
Vin
GND
0V
+Vout
DC
DC
-Vout
REG
REG
REG
D ual Output
Si ngl e Output
Vin
GND
0V
+Vout
DC
DC
REG
REG
(Figure 2)
No parallel connection or plug and play.


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