OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Test conditions
For Vin change of 1%
(5V output)
(9V output)
(12V output)
(15V output)
Min
0.2
Max
Units
2
W
±1.2
%
12.8
15
8.3
15
%
6.8
15
6.3
15
See tolerance envelope graph
0.03
%/°C
100
150
mVp-p
75
KHz
Typ
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.
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).
Dual Output
L
L
Load regulation
10% to 100% load
Output voltage accuracy
Temperature drift
100% full load
Ripple & Noise*
20MHz Bandwidth
Switching frequency Full load, nominal input
*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:
±0.5%.
Vin
Cin
+Vo
Cout
DC DC
GND
Single Output
L
L Cout
0V
-Vo
L
TYPICAL CHARACTERISTICS
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 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
Ambient Temperature
( C )
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)
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
(0.323)
RECO MMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch),
diameter:1.00mm(0.039inch)
Vin
(VDC)
5
12
15
24
-
Cin
(uF)
4.7
2.2
2.2
1
-
Single Out put
14
(0.394)
(0.300)
9 8
7
1
14
11
7
9 8
1
Single Cout
Vout (uF)
(VDC)
3.3
10
5
10
9
4.7
12
2.2
15
1
Dual
Vout
(VDC)
±5
±9
±12
±15
±24
Cout
(uF)
4.7
2.2
1
0.47
0.47
Dual Output
14
1
11
9 8
7
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
FOOTPR INT DETAILS
Singles
Duals
Pin
1
7
8
9
11
14
GND
NC
0V
+Vo
No pin
Vin
GND
NC
0V
+Vo
-Vo
Vin
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 (Figure 2).
Dual O u tput
Vn
i
GND
S ingle Output
Vn
i
GND
R EG
REG
R EG
REG
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
DC DC
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 (A_D -1W/B_D-1Wseries).
REG
-Vout
+Vout
DC DC
0V
(Figure 2)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_D-2W & B_D-2W
A/1-2007
Page 2 of 2
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