COMMON SPECIFICATIONS
APPLICATION NOTE
Requirement on output load
Item
Test Conditions
Min
Typ Max Units
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).
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
95
85
%
-40
-55
125
25
°C
15
1.5mm from case for 10 seconds
260
Free air convection
Epoxy Resin(UL94-V0)
Package material
Short circuit protection*
MTBF
1
Second
Recommended testing circuit
3500
K hours
g
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
*Supply voltage must be discontinued at the end of short circuit duration.
Dual Output
L
L
+Vo
TYPICAL CHARACTERISTICS
Vin
Cout
Cin
0V
DC
DC
DC
DC
Cout
L
L
GND
-Vo
Single Output
Vin
L
+Vo
0V
Cout
Cin
GND
(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
Operating Temp.(oC)
RECOMMENDED REFLOW SOLDERING PROFILE
260oC
250
10 Sec Max
220oC
200
greatest capacitance of its filter capacitor sees (Table 1).
EXTERNAL CAPACITOR TABLE (Table 1)
150
Vin
Cin
Single Cout
Dual
Cout
90 Sec Max
(>220oC)
100
(VDC)
(uF)
Vout
(uF)
Vout
(uF)
(VDC)
(VDC)
3.3/5
4.7
2.2
-
5
9
10
4.7
2.2
1
±3.3/5
±9
4.7
2.2
1
50
12
-
0
12
15
±12
±15
Time (sec.)
-
-
1
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
It’s not recommended to connect any external capacitor in
the application field with less than 0.5 watt output.
First Angle Projection
Output Voltage Regulation and Over-voltage
Protection Circuit
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*01inch)
The simplest device for output voltage regulation,
over-voltage and over-current protection is
a linear
1211
8 7
10
Top View
Sigle/Dual output
2.00
(0.079)
voltage regulator with overheat protection that is
connected to the input or output end in series (Figure2).
Dual Ou tput
0.60
(0.024)
2.54
(0.100)
8
12
7
11
10
+Vout
REG
Vi n
R EG
0V
DC
DC
DC
GND
-Vout
REG
REG
(0.039)
Single Output
Side View
+Vout
0V
Vi n
R EG
FOOTPRINT DETAILS
DC
Dual
Single
Pin
1.30
GND
1
2
GND
Vin
0V
GND
Vin
0V
(Figure2)
Overload Protection
NC
-Vo
+Vo
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.
8
Others
+Vo
NC
NC
NC:No Connection
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)
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
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
