F0303T-W2 Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

COMMON SPECIFICATION
Item
Test Conditions
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
1.5mm from case for 10 seconds
Cooling
Isolation voltage
Tested for 1 minute and 1mA max
Isolation resistance
Test at 500VDC
Short circuit protection*
package material
MTBF
Weight
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
Min
Typ Max Units
95
%
-40
85
-55
125
°C
15
25
260
Free air convection
3000
1000
VDC
MΩ
1 second
Epoxy Resin(UL94-V0)
3500
K hours
1.71
g
Operating Temp.(^oC)
RECOMMENDED REFLOW SOLDERING PROFILE
2 50
26 0^o C
10 Sec Max
2 00
2 2 0^oC
1 50
90 Sec Max
1 00
( >2 2 0 ^oC )
50
0
Time ( sec .)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch),
diameter:1.00mm
2. 00
(0 . 079)
(0.039)
FOOTPRINT DETAILS
Pin
Single
Dual
2
1
8
Others
Vin
GND
0V
NC
+Vo
NC
Vin
GND
0V
- Vo
+Vo
NC
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)
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.
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
Vin
L
+Vo
Cin
DC DC
Co ut
GND
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.
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).
Dual O u tput
Vi n
R EG
REG
DC DC
GND
REG
+Vout
0V
-Vo ut
S ingle Output
Vi n
R EG
REG
DC DC
GND
（Figure2）
+Vout
0V
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 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.
F_T-W2&E_T-W 2
A/0-2007
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