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VWRBS2-D5-S3.3-SIP Datasheet(PDF) 4 Page - CUI INC |
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VWRBS2-D5-S3.3-SIP Datasheet(HTML) 4 Page - CUI INC |
4 / 5 page cui.com CUI Inc │ SERIES: VWRBS2 │ DESCRIPTION: DC-DC CONVERTER date 09/10/2012 │ page 4 of 5 1. 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 : 2. 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). 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). 3. 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 Ipy. General: Ip ≤1.4*Iin-max 4. No parallel connection or plug and play +V o 0V Co ut 6 7 8 Cs Cin Vi n GND 2 1 3 Vc R Li n Ic D1 Vin (Vdc) Cout (μF) 3.3 2,200 5 1,000 9 820 12 680 15 560 24 470 Table 1 APPLICATION NOTES Input Voltage (V) Inp ut Voltage Ra nge Ip R= V C-VD-1.0 I C Figure 1 Cin 5, 12 V 24, 48 V 100 μF 10 ~ 22 μF Lin -- 4.7 ~ 120 μH Cout -- 100 μF (typ) Lout -- 2.2 ~ 10 μH Cs -- 10 ~ 22 μF |
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