COMMON SPECIFICATIONS
Filtering
To get an extreme low ripple, an “LC”
Item
Test conditions
Min
Typ
20
Max
95
Units
%
filtering network may be connected to the
input and output ends of the DC/DC
Storage humidity
Operating temp. range
Storage temp. range
Temp. rise at full load
Lead temperature
Cooling
-40
-55
85
converter, which may produce
a
more
125
30
significant filtering effect. 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 see (figure 1).
°C
1.5mm from case for 10 seconds
300
Free air convection
Plastic (UL94-V0)
Continuous
1
Case material
IEXXXXS-1W
L
Short circuit protection
L
+Vo
IEXXXXKS-1W *
s
Vin
Cout
Cin
0V
DC
DC
MTBF
3500
K hours
g
L
Cout
GND
-Vo
Weight
5.2
(Figure 1)
*Supply voltage must be discontinued at the end of short circuit duration.
In some circuits which are sensitive to noise
and ripple, a filtering capacitor may be added
to the DC/DC output end and input end to
reduce the noise and ripple. However, the
capacitance of the output filter capacitor must
proper. If the capacitance is too big, a startup
problem might arise. For every channel of
output, providing the safe and reliable
TYPICAL CHARACTERISTICS
Temperature Derating Graph
operation
is
ensured,
the
greatest
capacitance of its filter capacitor refer to the
external capacitor table (table1).
EXTERNAL CAPACITOR TABLE (TABLE1)
Operating Temp.( C)
Vin
(VDC)
Vout
(VDC)
Cout
(uF)
Cin
(uF)
OUTLINE DIMENSIONS
5
4.7
2.2
1
±5
±9
4.7
2.2
1
First Angle Projection
12
24
--
±12
±15
(Bottom View)
7
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
1 2
9 10
--
0.47
2.32
2.54
Overload Protection
Under normal operating conditions, the
output circuit of these products has no
protection against over-current. The simplest
method is to connect a self-recovery fuse in
series at the input end or add a circuit breaker
to the circuit.
2
1
7
9
10
(1.080)
FOOTPRINT DETAILS
(Side View)
When the environment temperature is
higher than 71°C, the product output
power should be less then 60% of the
rated power.
Function
Pin
1
Vin
GND
+Vo
-Vo
0.50
(0.020)
2
7
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)
No parallel connection or plug and play.
9
Use dual output simultaneously, forbid
opening output pin(0V) to use as single
output.
0V
10
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, a minimum load is specified for
this kind of DC/DC converter in addition to a maximum load (namely full load). During
operation, make sure the specified range of input voltage is not exceeded, the minimum
output load is not less than 10% of the full load, that this product should never be
operated under no load!
MORNSUN reserves the copyright
Specifications subject to change without notice
IE_KS-1W & IE_S-1W
A/2-2008
Page 2 of 2
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