Application ideas

L5973D

12/17

When an output voltage below the internal reference (1.235 V) is required, the circuit

reported in the figure 18 can been used. In this case the minimum voltage reachable is 0.6 V

and can be easily calculated with the following formula:

The value of this resistor has to be calculated taking into account that the current flowing

Figure 19.

Output voltage below the 1.235 V internal voltage reference