Recommended testing and application 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).
OUTPUT SPECIFICATIONS
Item
Test conditions
Min
0.1
Typ
Max
1
Units
W
Output power
Line regulation
For Vin change of 1%
±1.2
15
10% to 100% load(5V output)
10% to 100% load (9V output)
10% to 100% load (12V output)
10% to 100% load (15V output)
12.8
8.3
6.8
6.3
%
15
Load regulation
15
Dual Output
L
L
15
+Vo
Vin
Cout
Output voltage accuracy
See tolerance envelope graph
0V
Cin
DC
DC
DC
DC
Cout
L
L
Temperature drift
Ripple & Noise*
100% full load
0.03
200
%/°C
GND
-Vo
20MHz Bandwidth
150
250
42
mVp-p
Single Output
Vin
(5V input)
L
Full load,
nominal input
+Vo
0V
Switching frequency
KHz
(others input)
Cout
Cin
*Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
GND
(Figure 1)
Note:
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2. Dual output models unbalanced load: ±5%.
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).
TYPICAL CHARACTERISTICS
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
(VDC) (uF)
Cin Single Cout Dual Cout
(
)
C
Ambient Temperature
Vout (uF)
(VDC)
Vout
(VDC)
(uF)
OUTLINE DIMENSIONS & PIN CONNECTIONS
5
12
24
-
4.7
2.2
1
5
9
10
4.7
2.2
1
±5
±9
4.7
2.2
1
First Angle Projection
12
15
±12
±15
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
-
1
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
Dual Output
1 2
5 6
Output Voltage Regulation and Over-voltage
Protection Circuit
1
2
5
6
7
The simplest device for output voltage
regulation,
over-voltage
and
over-current
Single Output
protection is
a
linear voltage regulator with
overheat protection that is connected to the input
or output end in series (Figure 2).
5
1
2
7
Dual Output
+Vout
REG
REG
REG
FOOTPRINT DETAILS
Vin
REG
0V
Singles
Duals
Pin
DC DC
GND
-Vout
1
2
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
Single Output
5
6
7
+Vout
0V
Vin
REG
DC
DC
(Figure 2)
Overload Protection
General tolerances: 0.25mm( 0.010inch)
GND
APPLICATION NOTE
Requirement on output load
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.
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.
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
EA_S-1W & FB_S-1W
A/1-2008
Page 2 of 2
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
