Designing an application with the L6230

AN4243

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Doc ID 024199 Rev 1

2.9

Input logic pins

INx and ENx pins are TTL/CMOS and microcontroller compatible logic input pins. The

internal structure is shown in Figure 10 . Typical values for turn-on and turn-off thresholds

Pins are ESD protected and can be directly connected to the logic outputs of a

microcontroller; a series resistor is generally not recommended, as it could help inducted

noise to disturb the inputs.

Figure 10.

Logic input internal structure

DIAG-EN pin has the same input structure with the exception that the drain of the

overcurrent and MOSFET thermal protection is also connected to this pin. Due to this

connection, this pin has to be driven very carefully. The EN input may be driven in one of two

configurations as shown in Figure 11 or Figure 12. If driven by an open-drain (collector)

k

More information on selecting the values is found in Section 2.10.

5V

ESD

PROTECTION

AM16572v1