Functional description

STSPIN820

18/29

DocID031065 Rev 2

TOFF adjustment

The total OFF time is adjusted through an external resistor connected between the TOFF

pin and ground as shown in Figure 6.

Figure 6. OFF time regulation circuit

The relation between the total OFF time and the external resistor value is shown in the

graph of Figure 7. The value typically ranges from 10 µs to 150 µs. The recommended value

The resulting OFF time depends on the decay mode selected:



DECAY = 'L', mixed decay



DECAY = 'H', slow decay