COMMON SPECIFICATION
APPLICATION NOTE
Item
Test Conditions
Min
Typ
15
Max
95
Units
%
Requirement on output load
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
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.
-40
-55
85
125
25
°C
1.5mm from case for 10 seconds
260
Free air convection
Isolation voltage
Isolation resistance
Short circuit protection*
package material
MTBF
Tested for 1 minute and 1mA max
Test at 500VDC
3000
1000
VDC
MΩ
1
second
Epoxy Resin(UL94-V0)
3500 K hours
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).
Weight
1.71
g
*Supply voltage must be discontinued at the end of short circuit duration.
L
TYPICAL CHARACTERISTICS
L
+Vo
Vin
GND
Cout
Cin
DC
DC
0V
(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. It’s not recommended to connect any
external capacitor in the application field.
Operating Temp.(oC)
RECOMMENDED REFLOW SOLDERING PROFILE
260o C
250
10 Sec Max
220o C
200
150
Output Voltage Regulation and Over-voltage
Protection Circuit
The simplest device for output voltage
90 Sec Max
(>220oC)
regulation,
over-voltage
and
over-current
100
protection is
a
linear voltage regulator with
overheat protection that is connected to the input
50
0
or output end in series (Figure2).
Dual Ou tput
Time (sec.)
+Vout
0V
REG
REG
REG
Vin
REG
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
DC DC
GND
-Vout
First Angle Projection
Single Output
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch),
diameter:1.00mm
+Vout
0V
Vin
REG
DC
DC
（Figure2）
Overload Protection
GND
2.00
(0.079)
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.
(0.039)
FOOTPRINT DETAILS
No parallel connection or plug and play.
Single
Pin
Dual
2
1
Vin
Vin
GND
0V
GND
0V
NC
-Vo
+Vo
NC
8
+Vo
NC
Others
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
MORNSUN reserves the copyright
Specifications subject to change without notice.
F_T-W2&E_T-W2
A/0-2007
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