B0303YS-W2 Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – MINIATURE SIP PACKAGE

COMMON SPECIFICATION
Item
Test Conditions
Min
Typ Max Units
Storage humidity
95
%
Operating temperature
-40
85
Storage temperature
Temp. rise at full load
-55
125
°C
15 25
Lead temperature
1.5mm from case for 10 seconds
300
Short circuit protection*
1
S
Cooling
Free air convection
Case material
Plastic(UL94-V0)
MTBF
3500
K hours
Weight
1.6
g
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
Operating Temp.(^oC)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch),
d i am e t er :1 . 0 0 mm
12 34
1 2 34
Note:
Un i t : mm ( i nc h )
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin toler ances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
FOOTPRINT DETAILS
Pin Function
1
Vin
GN D
3
0V
4
+Vo
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.
Recommended 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).
L
Vin
L
+Vo
C
DC DC
C
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
arise. It’s not recommended to connect any
external capacitor in the application field .
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).
Vin
REG
DC DC
GND
+Vout
0V
Vin
GND
REG
DC DC
+Vout
0V
(Figure 2)
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.
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
B_YS-W 2
A/0-2008
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