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WRB1212CKS-1W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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WRB1212CKS-1W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 2 page MORNSUN reserves the copyright Specifications subject to change without notice. WRA_CKS-1W & WRB_CKS-1W A/0-2008 Page 2 of 2 COMMON SPECIFICATION APPLICATION NOTE Item Test Conditions Min Typ Max Units Storage Humidity 95 % Operating Temperature -40 85 Storage Temperature -50 125 Temp. Rise at Full Load 15 35 Lead Temperature 1.5mm from case for 10 seconds 300 °C Isolation voltage Tested for 1 minute and 1mA max 1500 VDC Isolation resistance Test at 500VDC 1000 M Ω Isolation Capacitance 100KHz,1V 35 PF No-load power consumption 120 mW Cooling Free Air Convection Short Circuit Protection Continuous, Automatic recovery Case Material Plastic(UL94-V0) MTBF 1000 K hours Weight 5 g Note: 1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section, application notes. 3. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. 4. See below recommended circuits for more details. TYPICAL TEMPERATURE CURVE Operating Temp.( ) C 100 OUTLINE DIMENSIONS & FOOTPRINT DETAILS FOOTPRINT DETAILS RECOMMENDED FOOTPRINT Top view,grid:2.54mm(0.1inch), diameter:1.00mm(0.039inch) 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) Dual/Single Output Pin Single Dual 1 2 3 5 GND Vin +Vo NC 0V 7 8 6 CTRL -Vo GND Vin +Vo NC 0V CTRL CS 22.00 (0.866) 2 35 2 6 78 1 NC:No Connection First Angle Projection 3 5 Side View Bottom View 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). Single Output +Vo 0V Co ut 6 7 8 Cs Cin Vin G ND 2 1 3 Vc R Lin Ic D1 Dual Output +Vo 0V Cout 6 8 7 Cout L out L out -Vo C in V in G ND 2 1 3 Vc R Lin Ic D1 (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). General: Cin: 5V,12V 100 μF 24V,48V 10uF Cout: 47 μF(typ) Lin: 4.7 μH -120μH Lout: 2.2 μH-10μH Cs: 10uF-22uF External Capacitor Table(Table 1) Single Vout (VDC) Cout (uF) Dual Vout (VDC) Cout (uF) 5 680 ±5 330 9 560 ±9 270 12 470 ±12 220 15 330 ±15 150 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 follows : R= 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 Input Voltage (V) Input Voltage Range Ip No parallel connection or plug and play. VC-VD -1.0 Ic |
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