COMMON SPECIFICATION
APPLICATION NOTE
Recommended circuit
Item
Test Conditions
Min
Typ
15
Max
95
Units
%
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
Storage Humidity
Operating Temperature
Storage Temperature
Temp. Rise at Full Load
Lead Temperature
Isolation voltage
Isolation resistance
Isolation Capacitance
No-load power consumption
Cooling
-40
-55
85
125
°C
converter, see (Figure 1).
Single Output
Ic
D1
R
1.5mm from case for 10 seconds
Tested for 1 minute and 1mA max 3000
300
Vc
3
Lin
VDC
MΩ
PF
2
1
6
8
Vi n
+Vo
0V
Test at 500VDC
100KHz,1V
1000
Cin
35
Co ut
Cs
GND
120
mW
7
Dual Output
Free Air Convection
D1 Ic
R
Vc
Short Circuit Protection
Case Material
Continuous, Automatic recovery
Plastic(UL94-V0)
3
Lin
Lout
2
6
Vin
+Vo
Cout
Cout
Cin
0V
MTBF
1000
K hours
g
7
8
Lout
1
GND
Weight
5
-Vo
Note:
(Figure 1)
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless
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). General:
otherwise specified.
4. See below recommended circuits for more details.
TYPICAL TEMPERATURE CURVE
Cin:
5V,12V
100μF
10μF
24V,48V
Cout: 47μF(Typ.)
Lin:
4.7μH -120μH
Lout:
Cs:
2.2μH-10μH
10μF-22μF
External Capacitor Table(Table 1)
Single Vout
(VDC)
Cout
(μF)
Dual Vout
(VDC)
Cout
(μF)
100
5
9
12
15
680
560
470
330
±5
±9
±12
±15
330
270
220
150
Operating Temp.(
C )
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
CTRL Terminal
When open or high impedance,the converter
work well; When this pin is ‘high’; the converter
shutdown; It should be note that the input current
(Ic) should between 5-10mA, exceeding the
maximum 20mA will cause permanence damage
to the converter. The value of R Can be derived as
First Angle Projection
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch),
diameter:1.00mm(0.039inch)
1 2 3 5 6 7 8
Bottom View
follows :
Dual/Single Output
VC-VD -1.0
R=
Ic
3
5
(0.866)
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
Side View
FOOTPRINT DETAILS
Single
Pin
1
Dual
GND
Vin
GND
Vin
2
3
5
CTRL
NC
CTRL
NC
Ip
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pin section tolerances:+0.10mm(+0.004inch)
General tolerances:+0.25mm(+0.010inch)
6
+Vo
+Vo
7
8
0V
CS
0V
-Vo
Input Voltage
Range
NC:No Connection
Input Voltage (V)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRE_CKS-1W & WRF_CKS-1W
A/0-2008
Page 2 of 2
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