COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
Case material
Short circuit protection*
MTBF
Weight
*
Supply voltage must be discontinued at the end of short circuit duration.
3500
6.3
1.5mm from case for 10 seconds
-25
-45
25
300
Free air convection
Plastic (UL94-V0)
1
Test conditions
Min
Typ
Max
95
75
105
°C
Units
%
Recommended circuit
If you want to further
decrease
the
input/output ripple, an capacitor filtering network
may be connected to the input and output ends
of the DC/DC converter, see (Figure 1).
Vin
Cin
+Vo
DC DC
(Figure 1)
Cout
GND
0V
s
K hours
g
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
Cin
Vo
Cout
(VDC)
(μF)
(VDC)
(μF)
5
12
4.7
2.2
±12
±15
1
0.47
TYPICAL CHARACTERISTICS
Temperature Derating Graph
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
Overload Protection
Under normal operating conditions, the output
circuit of these products has no protection
Operating Temp.(
C
)
against over-current and short-circuits. The
simplest method is to connect a self-recovery
fuse in series at the input end or add a circuit
breaker to the circuit.
Input Over-voltage Protection Circuit
The simplest device for input over-voltage
protection is a linear voltage regulator with
overheat protection that is connected to the
input end in series (Figure 2).
Vin
GND
+Vo
OUTLINE DIMENSIONS & PIN CONNECTIONS
REG
DC DC
(Figure 2)
0V
-Vo
When the environment temperature is higher
than 71°C, the product working should be
see temperature derating graph.
No parallel connection or plug and play.
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum
output load could
not be less than 10%
of the full 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.
MORNSUN reserves the copyright
Specifications subject to change without notice.
IA_WS-1W5
A/3-2012
Page 2 of 2
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