F0303T-1W Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

COMMON SPECIFICATIONS
Item
Test Conditions
Min Typ Max Units
Storage humidity
95 %
Operating temperature
-40
85
Storage temperature
Temp. rise at full load
-55
125
°C
15 25
Lead temperature
1.5mm from case for 10 seconds
260
Cooling
Free air convection
Package material
Epoxy Resin(UL94-V0)
Short circuit protection*
1 Second
MTBF
3500
K hours
Weight
1.71 g
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
Operating Temp.(^oC)
RECOMMENDED REFLOW SOLDERING PROFILE
2 50
26 0^oC
10 Sec Max
2 2 0^oC
2 00
1 50
90 Sec Max
1 00
( >220^oC )
50
0
Time (sec.)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
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 (E _T-W2/F_T-W2 Series).
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 (Figure 1).
Dual O utput
L
L
Vi n
+Vo
Co ut
Cin
GND
DC DC
L ^Cout
0V
-Vo
Single Output
L
Vi n
L
+Vo
Cin
GND
DC DC
Co ut
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. 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 Single Cout Dual Cout
(VDC) (uF) Vout (uF) Vout (uF)
(VDC)
(VDC)
3.3/5 4.7
5
10 ±3.3/5 4.7
12
2.2
9
4.7
±9
2.2
-
-
12
2.2 ±12
1
-
-
15
1
±15
1
It’s not recommended to connect any external capacitor in
the application field with less than 0.5 watt output.
1211 10 8 7
Top View
2.54
(0.100)
0.60
(0.024)
Side View
1.30
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*01inch)
Sigle/Dual output
12 11 10 8 7
2.00
(0.079)
(0.039)
FOOTPRINT DETAILS
Pin
Single
Dual
1
GND
2
Vin
0V
GND
Vin
0V
NC
8
+Vo
Others
NC
NC:No Connection
-Vo
+Vo
NC
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin section tolerances: 0.10mm( 0.004inch)
General tolerances: 0.15mm( 0.006inch)
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
Single O utput
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-1W &E_T-1W
A/1-2008 Page 2 of 2