COMMON SPECIFICATION
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
Isolation voltage
Isolation resistance
Short circuit protection*
package material
MTBF
Weight
*Supply voltage must be discontinued at the end of short circuit duration.
APPLICATION NOTE
Min
-40
-55
15
Typ
Max
95
85
125
25
260
Free air convection
3000
1000
1
3500
1.71
VDC
MΩ
second
K hours
g
°C
Units
%
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.
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
Test Conditions
1.5mm from case for 10 seconds
Tested for 1 minute and 1mA max
Test at 500VDC
Epoxy Resin(UL94-V0)
TYPICAL CHARACTERISTICS
Vin
Cin
+Vo
DC DC
(Figure 1)
Cout
GND
0V
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
Operating Temp.( C)
o
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
RECOMMENDED REFLOW SOLDERING PROFILE
250
Te mp eratu r e (
o
C)
200
150
100
50
0
Time ( sec .)
90 Sec Max
( >220
o
C )
26 0
o
C
1 0 S ec Max
external capacitor in the application field.
Output Voltage Regulation and Over-voltage
Protection Circuit
The
simplest
device
for
output
voltage
regulation,
over-voltage
and
over-current
220 C
o
protection is a linear voltage regulator with
overheat protection that is connected to the input
or output end in series (Figure2).
Dual O u tput
Vn
i
GND
R EG
REG
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projection
+Vout
0V
DC DC
REG
-Vout
S ingle Output
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch),
diameter:1.00mm
2.00
(0.079)
Vn
i
GND
R EG
REG
+Vout
DC DC
0V
（Figure2）
Overload Protection
Under normal operating conditions, the output
circuit of these products has no protection
against overload. The simplest method is to
(0.039)
connect a self-recovery fuse in series at the input
end or add a circuit breaker to the circuit.
FOOTPRINT DETAILS
Pin
2
1
Single
Dual
No parallel connection or plug and play.
Vin
GND
0V
NC
+Vo
NC
Vin
GND
0V
-Vo
+Vo
NC
8
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-W 2
A/0-2007
Page 2 of 2
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
