COMMON SPECIFICATION
Item
Storage humidity
Operating temperature
Storage temperature
Lead temperature
Temp. rise at full load
Cooling
Case material
Short circuit protection*
MTBF
Weight
*
Supply voltage must be discontinued at the end of short circuit duration.
Note:
1.All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output
load unless otherwise specified.
2. See below recommended circuits for more details.
Test Conditions
Min
Typ
Max
95
Units
%
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 Out put
Vin
Cin
L
L
-40
-55
15
1.5mm from case for 10 seconds
85
125
25
300
Free air convection
Plastic(UL94-V0)
1
S
K hours
2.1
g
°C
3500
+Vo
Cout
DC DC
GND
Singl e Output
L
L Cout
L
0V
-Vo
+Vo
Vin
Cin
TYPICAL CHARACTERISTICS
DC DC
(Figure 1)
Cout
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
Operating Temp.(
o
C)
safe
and
reliable
operation
is
ensured,
the
recommended capacitance of its filter capacitor
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
RECOMMENDED FOOTPRINT
Top
view,grid:2.54*2.54mm(0.1 *0.1inch),
diameter:1.00mm(0 .039inch)
Single
7.50
1 2
0.50
(0.020)
4
6
sees (Table 1).
EXTERNAL CAPACITOR TABLE (Table 1)
Vin
(VDC)
5
12
24
-
Cin
(uF)
4.7
2.2
1
-
Single
Vout
(VDC)
5
9
12
15
Cout
(uF)
10
4.7
2.2
1
Dual
Vout
(VDC)
±5
±9
±12
±15
Cout
(uF)
4.7
2.2
1
0.47
It’s not recommended to connect any external capacitor in
Dua l
the application field with less than 0.5 watt output.
4
5
6
6.00
(0.24)
1 2
1
(0.035)
2
4
5
6
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).
Du al Ou t pu t
Vin
RE G
RE G
FOOTPRINT DETAILS
Pin
Single
Dual
1
Vin
GND
0V
NC
+Vo
Vin
GND
-Vo
0V
+Vo
2
4
5
6
Note:
Unit:mm(inch)
Pin section :0.50*0.30mm(0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
General tolerance s: 0.25mm( 0.010inch)
+Vout
0V
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_M
–W2/B_LM-W2
series).
D C DC
GND
Si ng le O ut put
Vin
GND
RE G
RE G
RE G
-Vout
+Vout
D C DC
0V
(Figure 2)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_M-1W & B_LM-1W
A/1-2008
Page 2 of 2
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