COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Lead temperature
Temp. rise at full load
Short circuit protection*
package material
Cooling
MTBF
Weight
*Supply voltage must be discontinued at the end of short circuit duration.
Test Conditions
Min
Typ
Max
95
Units
%
Recommended testing 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 (Figure1).
-40
-55
1.5mm from case for 10 seconds
15
85
125
300
25
1
Free air convection
Plastic (UL94-V0)
S
°C
L
Vin
Cin
GND
L
Cout
+Vout
0V
-Vout
DC DC
(Figure 1)
L Cout
3500
2.1
K hours
g
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
Cin
Dual Vout
Cout
(VDC)
(uF)
(VDC)
(uF)
3.3
It’s
not
TYPICAL CHARACTERISTICS
4.7
±5
any
4.7
external
recommended to connect
Operating Temp.( C)
o
capacitor in the application field with less than 0.5 watt
output.
RECOMMENDED REFLOW SOLDERING PROFILE
First Angle Projection
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
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 (Figure2).
Side view
1 2
5 6
Vin
GND
REG
+Vout
DC DC
REG
0V
-Vout
+Vout
0V
REG
7.00
Vin
Bottom view
FOOTPRINT DETAILS
Pin
1
2
5
6
7
Function
Vin
GND
-Vo
0V
+Vo
GND
DC DC
(Figure 2)
-Vout
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pinsection tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
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
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.
input end or add a circuit breaker to the circuit.
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
E_KS-1W5
A/0-2008
Page 2 of 2
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
