COMMON SPECIFICATION
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature)
Short circuit protection*
Cooling
Case material
MTBF
Weight
*
Supply voltage must be discontinued at the end of short circuit duration.
3500
11
1.5mm from case for 10 seconds
-40
-55
20
Test conditions
Min
Typ
Max
95
85
125
30
300
1
Free air convection
Plastic(UL94-V0)
K hours
g
s
°C
Units
%
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).
L
L
Vin
Cin
+Vo
Cout
DC DC
(Figure 1)
GND
L Co ut
0V
-Vo
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)
TYPICAL CHARACTERISTICS
Temperature Derating Graph
Vin(VDC)
5
12
24
-
Operating Temp.(
C
)
Cin(uF)
4.7
2.2
1
-
Vout(VDC) Cout(uF)
±5
4.7
±9
2.2
±12
1
±15
0.47
It’s not recommended to connect any external capacitor in
the application field with less than 0.5 watt output.
OUTLINE DIMENSIONS & PIN CONNECTIONS
Overload Protection
Under normal operating conditions, the output
circuit of these products has no protection against
over-current
and
short-circuits.
The
simplest
First Angle Projection
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
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).
31.80(1.252)
2.53
(0.100)
9.50
(0.374)
(0.799)
(0.600)
1 2 3
10 11 12
24 23 22
15 14 13
(Bottom View)
24 2322
1514
1 2 3
10 11 12
2.00
(0.079)
4.10
FOOTPRINT DETAILS
Pin
1,24
2,23
3,10,15,22
11,14
12,13
Duals
Vin
-Vo
0V
+Vo
GND
Vin
GND
REG
+Vout
DC DC
(Figure 2)
0V
-Vout
Note:
Unit:mm(inch)
Pin diameter:0.50mm (0.020inch)
Pin diameter tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
When the environment temperature is higher
than 71°C, the product output power should be
less then 60% of the rated power.
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.
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
IA_KP-*W
A/1-2008
Page 2 of 2
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