The relationship between the OFF time and the external resistor value is shown in Figure 8. OFF time regulation

circuit. The value typically ranges from 10 µs to 150 µs.

1 kΩ

22 nF

2.2 kΩ

22 nF

0

20

40

60

80

100

120

140

0

50

100

150

200

Off resistor [kohm]

6.4

Overcurrent and short-circuit protection

The device embeds circuitry protecting each power output against the overload and short circuit conditions (short-

circuit to ground, short-circuit to VS and short-circuit between outputs).

When the overcurrent or short-circuit protection is triggered, the power stage is disabled and the EN\FAULT input

Figure 10. Overcurrent and short-circuit protection management).

The power stage is kept disabled and the open-drain MOSFET is kept ON until the EN\FAULT input falls below

STSPIN220

Overcurrent and short-circuit protection

DS11633 - Rev 4

page 15/27