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MC79M05BDTRK 数据表(PDF) 5 Page - ON Semiconductor |
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MC79M05BDTRK 数据表(HTML) 5 Page - ON Semiconductor |
5 / 9 page MC79M00 Series http://onsemi.com 5 Protection Diodes When external capacitors are used with MC79M00 series regulator it is sometimes necessary to add protection diodes to prevent the capacitors from discharging through low current points into the regulator or from output polarity reversals . Generally, no protection diode is required for values of output capacitance less then 10 mF. Figure 2 shows the MC79M15 with the recommended protection diodes. • Opposite Polarity Protection Diode D1 protects the regulator from output polarity reversals during startup, power off and short-circuit operation. • Reverse-bias Protection Diode D2 prevents output capacitor from discharging thru the MC79M15 during an input short circuit or fast switch off of power supply. Figure 2. Protection Diodes Gnd Gnd + -20 V Input -15 V Output MC79M15 + 1.0 mF 1.0 mF MBRS140 or Equiv D1 MBRS140 or Equiv D2 |
类似零件编号 - MC79M05BDTRK |
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类似说明 - MC79M05BDTRK |
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