D050505T-1W Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – TWIN OUTPUT ULTRAMINIATURE SMD PACKAGE

COMMON SPECIFICATIONS
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
260
Short circuit protection*
1
S
Cooling
Free air convection
package material
Plastic (UL94-V0)
MTBF
3500
K hours
Weight
2.1
g
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARECTERISTICS
Ambient Temperature( C )
RECOMMENDED REFLOW SOLDERING PROFILE
2 50
26 0^oC
10 Sec Max
2 2 0^oC
2 00
1 50
90 Sec Max
1 00
( >220^oC )
50
0
Time (sec.)
OUTLINE DIMENSIONS& RECOMMENDED FOOTPRINT
2 .75( 0. 10 8 )
1.27
(0.050)
0.25
(0.010)
14 13 12 10 9 8
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
1413 12 10 9 8
1 2 3 567
15.24(0.600)
17 .78 (0 .70 0)
1.8
123 567
1. 2
(0 .04 7)
A
0.25
0. 50( 0.0 2 0)
1.3 0.13
(0.051 0.005)
5. 00^。
N ot e:
U ni t:mm(i nc h)
Pin section:0.60*0.25mm(0.024*0.010inch)
Pin section tolerances: 0.10mm( 0.004inch)
General tolerances: 0.15mm( 0.006inch)
FOOTPRINT DETAILS
Function
1
GND
2
Vi n
5
0V1
6
Vo1
9
Vo2
10
0V 2
Ot h ers
NC
NC:No connection
APPLICATION NOTE
Requirement On Output Load
To ensure this module can operate efficiently and
reliably, a minimum load is specified for this kind of
DC/DC converter in addition to a maximum load
(namely full load). During operation, make sure the
specified range of input voltage is not exceeded, 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
(D_T –W2/W5).
Recommended testing 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 (Figure1).
L
Vin
C
L
DC DC
C
L
+Vo1
0V1
+Vo2
GND
C
0V2
(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. 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)
Vin
Cin
Vout
Cout
(VDC) (uF) (VDC) (uF)
5
4.7
5
4.7
12
2.2
9
2.2
-
-
12
1
-
-
15
0.74
It’s not recommend to connect any external capacitor in the
application field with less than 0.5 watt output.
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 (Figure2).
Vo1
Vin
REG
0V1
GND
DC DC
Vo2
0V2
REG
Vo1
Vin
GND
0V1
DC DC
REG
Vo2
0V2
(Figure2)
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.
D_T-1W
A/1-2008
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