Overload Protection
ISOLATION SPECIFICATIONS
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.
Item
Test conditions
Min
Typ
Typ
Max
Units
VDC
MΩ
Isolation voltage
Tested for 1 minute and 1 mA max
1000
1000
Isolation resistance Test at 500VDC
OUTPUT SPECIFICATIONS
Item
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).
Test conditions
Min
0.2
Max
2
Units
W
Output power
Line regulation
For Vin change of 1%
±1.2
15
(5V output)
(9V output)
(12V output)
(15V output)
(24V output)
12.8
8.3
6.8
6.3
5
15
%
Dual Output
L
Load regulation
10% to 100% load
15
L
+Vo
Vin
Cout
15
0V
Cin
DC
DC
DC
DC
Cout
L
L
15
GND
-Vo
Output voltage accuracy
See tolerance envelope graph
Single Output
Vin
L
Temperature drift
Ripple & Noise*
100% full load
20MHz Bandwidth
0.03
150
%/°C
+Vo
0V
75
75
mVp-p
KHz
Cout
Cin
GND
Switching frequency Full load, nominal input
(Figure 1)
*Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
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).
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%.
TYPICAL CHARACTERISTICS
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
(VDC)
Cin
(uF)
Single Cout
Dual
Vout
Cout
(uF)
(
)
C
Ambient Temperature
Vout
(uF)
(VDC)
(VDC)
OUTLINE DIMENSIONS & PIN CONNECTIONS
5
4.7
2.2
2.2
1
5
10
4.7
2.2
1
±5
±9
4.7
2.2
1
First Angle Projection
12
15
24
9
12
15
±12
±15
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*0.1inch)
diameter:1.00mm(0.039inch)
0.47
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
Dual Output
2
1
4 5
6
(0.100)
(0.079)
Output Voltage Regulation and Over-voltage
Protection Circuit
Single Output
The simplest device for output voltage
regulation,
over-voltage
and
over-current
2
1
4
6
protection is
a
linear voltage regulator with
overheat protection that is connected to the input
or output end in series (Figure 2).
FOOTPRINT DETAILS
(0.020)
Pin
1
Singles
Vin
Duals
Vin
Dual Ou tput
2
GND
0V
GND
-V0
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)
+Vout
0V
REG
REG
REG
Vin
REG
4
DC DC
5
No Pin
+Vo
0V
GND
-Vout
6
+Vo
Single Output
APPLICATION NOTE
Requirement on output load
+Vout
0V
Vin
REG
DC
DC
(Figure 2)
No parallel connection or plug and play.
GND
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 (A_S-1W /B_LS-1W Series).
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_S-2W & B_S-2W A/1-2008
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