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STK732C 数据表(PDF) 5 Page - Sanyo Semicon Device |
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STK732C 数据表(HTML) 5 Page - Sanyo Semicon Device |
5 / 6 page Notes on PC Board Production • Capacitor C1 should be placed as close as possible to the pin 10 input in the layout. (This is to prevent voltage drops in the input lines and pattern. Also, a separate smoothing capacitor is required if the input is a direct current input using rectified and smoothed AC.) • Capacitor C2 should be placed as close as possible to the load in the layout. (This is to compensate for voltage drops due to load fluctuations.) • Pins 2 and 5 are voltage sensing lines, and should be connected close to the load, i.e., close to C2. (This is to compensate for voltage drops in the pattern.) • Pins 3 and 4 should be directly connected to the two terminals of the current detection resistor Rs1. (This is to prevent detection based on pattern resistances.) • Pin 6 should be connected to the capacitor C1 ground using a thick, short line to reduce the related loop area. (This is to reduce switching spikes.) • Power lines, i.e., lines that carry current, should be made as wide as possible in the pattern. • When a ripple suppression LC filter is added, connect it at the location indicated by dotted lines in the figure. The sensing line from pin 2 should be connected to the same position (the C2 location) as it is when no filter is used. • C5 and R1, which are used to reduce switching spikes, should be connected as close as possible to the IC pins. • Locations where multiple pins are used (pins 7 and 8, and pins 9 and 10) must be connected in the printed circuit pattern. Output On/Off Control (cutoff) The on/off control function uses pin 12. When pin 12 is at the low level, the output will be cut off. STK732C No. 4533-5/6 Connection diagram for circuits that do not use the cutoff function. |
类似零件编号 - STK732C |
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类似说明 - STK732C |
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