Recommended testing and application circuit
COMMON SPECIFICATIONS
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).
Item
Test conditions
Min
Typ
Max
95
Units
%
Storage humidity range
Operating temperature
Storage temperature
Lead temperature
Temp. rise at full load
-40
-55
85
125
300
25
Dual Output
L
°C
L
1.5mm from case for 10 seconds
+Vo
Vin
Cout
15
0V
Cin
DC
DC
DC
DC
Cout
L
L
GND
-Vo
5V input voltage
12V input voltage
1
second
Short circuit protection*
Single Output
Vin
Continuous
L
+Vo
0V
Cooling
Free air convection
Plastic(UL94-V0)
Cout
Cin
Case material
MTBF
GND
3500
K hours
g
(Figure 1)
Weigh
4.2
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).
*When input voltage (Nominal) is 5V,Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
Cin
Single Cout
Dual
Vout
Cout
(uF)
(VDC) (uF)
Vout
(uF)
(VDC)
(VDC)
5
12
-
4.7
2.2
-
5
9
10
4.7
2.2
1
4.7
2.2
2.2
1
±5
±9
(
)
C
Ambient Temperature
12
15
±12
±15
OUTLINE DIMENSIONS & PIN CONNECTIONS
-
-
It’s not recommended to connect any external capacitor
First Angle Projection
in the application field with less than 0.5 watt output.
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
Output Voltage Regulation and Over-voltage
Protection Circuit
Dual Output
1 2
5 6
The simplest device for output voltage
regulation,
over-voltage
and
over-current
1
2
5 6
7
protection is
a
linear voltage regulator with
overheat protection that is connected to the input
or output end in series (Figure 2).
Single Output
Dual Output
+Vo
REG
REG
REG
Vin
REG
0V
DC DC
5
1
2
7
GND
-Vo
Single Output
+Vo
0V
FOOTPRINT DETAILS
Vin
REG
Singles
Duals
Pin
DC
DC
GND
1
2
5
6
7
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
(Figure 2)
Overload Protection
General tolerances: 0.25mm ( 0.010inch)
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.
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.
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
G_S-1W & H_S-1W
A/2-2008
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一文带你了解压敏电阻器在直流电路中的过压保护作用
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