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J0505N-1W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd.

Part No. J0505N-1W
Description  QUAD OUTPUT,DIP PACKAGE DC-DC CONVERTER
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Maker  MORNSUN [MORNSUN Science& Technology Ltd.]
Homepage  http://www.mornsun-power.com
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 2 page
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MORNSUN reserves the copyright
Specifications subject to change without notice.
J_N-1W
A/1-2008
Page 2 of 2
TYPICAL CHARACTERISTICS
Ambient Temperature C
(
)
OUTLINE DIMENSIONS & PIN CONNECTIONS
1
4 5 67
14
1110 98
14
1110 98
1
4 5 67
FOOTPRINT DETAILS
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*0.1inch),
diameter:1.00mm(.039inch)
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin section tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
First Angle Projection
Pin
Function
1
GND
4
5
6
7
8
9
10
11
14
0V3
+Vo3
0V4
+Vo2
0V2
+Vo1
0V1
+Vin
+Vo4
(Side View)
APPLICATION NOTE
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
+Vo1
0V1
+Vo4
0V4
+Vo2
0V2
+V o3
0V3
DC
DC
C
L
L
C
L
C
L
C
L
C
( 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 greatest capacitance of its filter capacitor sees (Table 1).
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin(VDC)
Cin(uF)
Vout(VDC) Cout(uF)
5
4.7
5
1
12
2.2
-
-
24
1
-
-
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
DC DC
+Vo1
0V1
+Vo4
0V4
+Vo2
0V2
+Vo3
0V3
REG
Vin
GND
DC DC
REG
+Vo1
0V1
+Vo4
0V4
+Vo2
0V2
+Vo3
0V3
REG
REG
REG
(Figure 2)
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.
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.
No parallel connection or plug and play.




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