WRD241212S-1W 데이터 시트보기 (PDF) - MORNSUN Science& Technology Ltd.
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WRD241212S-1W
MORNSUN Science& Technology Ltd.
WRD241212S-1W Datasheet PDF : 2 Pages
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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
Lead temperature
1.5mm from case for 10 seconds
300
Isolation voltage
Isolation resistance
Tested for 1 minute and 1mA max 1000
Test at 500VDC
1000
VDC
MΩ
Isolation Capacitance
100KHz,1V
80
pF
No-load power consumption
0.1
W
Cooling
Free Air Convection
Short circuit protection
Continuous
Case material
Plastic(UL94-V0)
MTBF
1000
K hours
Weight
5.8
g
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.
TYPICAL TEMPERATURE CURVE
100
Operating Temp.( C )
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
(1.079)
(Bottom View)
12
6 7 8 9 10
2.30±0.50
(0.100)
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid: 2.54 mm(0.1inch)
diameter:1.00mm(0.039inch)
12
6 7 8 9 10
(Side View)
0.50
(0.020)
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin sect ion tolerances:±0. 05mm(±0.002inch)
General tolerances:±0. 25mm(±0.010inch)
FOOTPR INT DETAILS
P in
Function
1
GND
2
Vin
6
+Vo1
7
0V1
8
CS
9
0V2
10
+Vo2
APPLICATION NOTE
CS Pin
By connecting a low ESR capacitor between
this terminal and the pin-7(Figure 1), the output
ripple and noise may be further improved.
Generally, the capacitance is no greater than
47uF.
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,
If the actual load is less than the specified
minimum load, the output ripple may increase
sharply. If the actual output power is very
small, please add an appropriate resistor as
extra loading, or contact our company for other
lower output power products.
Recommended Circuit
If you want to further decrease the
input/output ripple, you can increase
capacitance properly or choose capacitors with
low ESR (Figure 1).
Vin
Li 2
6
CS
8
+ Vo 1
Co
GND
Ci
1
Cs
7 4.7-12uH
0V1
10 +Vo2
+ Vo 2
Co
9
0V2
(Figure 1)
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)Cin： 5V & 12V 100μF
24V & 48V 10μF-47μF
Lin： 10μH-120μH
Cout：100μF(TYP)
Extemal Capacitor Table(Table 1)
Vout(VDC) 2W:Cout(uF) 1W:Cout(uF)
5
680
470
9
470
330
12
330
220
15
220
100
Input current
While using unstable power source, please
ensure the output voltage and ripple voltage do
not excced indexes of the converter. The
preceding power source must be able to
provide for converter sufficient starting current
Ip (Figure 2). General: Ip ≤1.4*Iin-max
Ip
Input Voltage
Range
Input Voltage (V)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRD_S-1W & WRD_S-2W
A/1-2008 Page 2 of 2
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