OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
For Vin change
of
±1%
(3.3 input)
(others input)
(3.3 output)
(5V output)
Load regulation
10% to 100% load
(9V output)
(12V output)
(15V output)
Output voltage accuracy
Temperature drift
100% full load
(EXXXXS-1W）
Test conditions
Min
0.1
Typ
Max
1
±1.5
±1.2
Units
W
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.
12
10
8.3
6.8
6.3
20
15
15
15
15
0.03
%/
°
C
%
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).
Dual Output
L
L
See tolerance envelope graph
50
100
75
100
100
75
150
100
150
KHz
mVp-p
Vin
Cin
+Vo
Cout
Ripple& Noise*
20MHz Bandwidth
(EXX24S-1W）
(FXXXXS-1W）
(FXX24S-1W）
DC DC
GND
Single Output
L
L Cout
0V
-Vo
L
Switching frequency Full load, nominal input
Vin
Cin
+Vo
Cout
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
1.All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2.Dual output models unbalanced load:
±5%.
DC DC
(Figure 1)
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
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
recommended capacitance of its filter capacitor
sees (Table 1).
EXTERNAL CAPACITOR TABLE (TABLE 1)
Single
Dual
Cin
Vin
Cout
Cout
Vout
Vout
(VDC)
(uF)
(uF)
(uF)
(VDC)
(VDC)
3.3/5
4.7
3.3/5
10
4.7
±
5
12
15
2.2
2.2
9
12
4.7
2.2
TYPICAL CHARACTERISTICS
Operating Temp.(
o
C)
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch),
diameter:1.00mm
Dual Output
Side view
24
1
15
1
0.47
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
±
9
±
12
±
15
2.2
1
1 2
5 6
Single Output
Output Voltage Regulation and Over-voltage
Protection Circuit
The simplest device for output voltage
regulation,
over-voltage
and
over-current
5
Bot tom view
1 2
protection is a linear voltage regulator with
overheat protection that is connected to the input
or output end in series (Figure 2).
FOOTPRINT DETAILS
Pin
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)
1
2
5
6
7
Single
Vin
GND
0V
No pin
+Vo
Dual
Vin
GND
-V0
0V
+Vo
D ual Output
Vin
GND
Single Output
Vin
GND
REG
REG
REG
REG
+Vout
0V
-Vout
+Vout
DC
DC
REG
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_S-W25&F_S-W25).
DC
DC
0V
(Fi g u re 2 )
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
E_S-1W & F_S-1W
A/1-2007
Page 2 of 2
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
