COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
Package material
Short circuit protection*
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
Epoxy Resin(UL94-V0)
1
3500
1.71
Second
K hours
g
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
Vin
Cin
L
L
Test Conditions
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
°C
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).
1.5mm from case for 10 seconds
TYPICAL CHARACTERISTICS
+Vo
Cout
DC DC
GND
Single Output
L
L Cout
0V
-Vo
L
Vin
Cin
+Vo
Cout
DC DC
GND
0V
(Figure 1)
It should also be noted that the inductance and the
frequency of the
“LC”
filtering network should be
Operating Temp.( C)
o
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)
RECOMMENDED REFLOW SOLDERING PROFILE
250
Te mperatur e (
o
C)
200
150
100
50
0
Time (s ec . )
90 Sec Max
( >220
o
C )
26 0
o
C
1 0 Sec Max
220 C
o
Vin
(VDC)
3.3/5
12
-
-
Cin
(uF)
4.7
2.2
-
-
Single
Vout
(VDC)
5
9
12
15
Cout
(uF)
10
4.7
2.2
1
Dual
Vout
(VDC)
±3.3/5
±9
±12
±15
Cout
(uF)
4.7
2.2
1
1
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projection
RECOMMENDED FOOTPRINT
Top
view,grid:2.54*2.54mm(0.1*01inch)
7.50
(0.295)
11.20
(0.441)
1211 10
8 7
Top View
Sigle/Dual output
It’s not recommended to connect any external capacitor in
the application field with less than 0.5 watt output.
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
GND
R EG
REG
2.00
(0.079)
8
7
2.54
(0.100)
0.60
(0.024)
12 11 10
+Vout
0V
DC DC
REG
-Vout
6.50
(0.254)
6.25
(0.244)
Side View
4.25
(0.166)
FOOTPRINT DETAILS
Pin
1
2
Single
GND
Vin
0V
NC
8
+Vo
Others
NC
NC:No Connection
(0.039)
Single O utput
Vi n
R EG
REG
+Vout
1.30
Dual
GND
Vin
0V
-Vo
+Vo
NC
GND
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 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.
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)
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. ]
