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TP113175-000-0 Datasheet
Figure 11 depicts a complete schematic for a step-down cir- cuit using the RC4391. Observe that the ground lead ofthe 4391 is not connected to circuit ground; instead, it is tied to the output voltage. It is by this rearrangement that the feed- back system, which senses voltages more negative than the ground lead, can be used to regulate a non-negative output voltage.
TP113175-000-0 Price

VDRM
Type Volts Code
BCR3AM 400 8
600 -12


TP113175-000-0 on stock

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There are also ESD protection diodes that are connected from each input to each power supply rail. These diodes are normally reversed biased, but will turn on if either input voltage exceeds either supply rail by more than 0.6 V. Again, should this condi- tion occur the input current should be limited to less than +5 mA. The minimum resistor value should then be: