L6227Q

Circuit description

11/27

4.2

Logic inputs

The internal structure is shown in Figure 6. Typical value for turn-on and turn-off thresholds

are respectively Vthon = 1.8 V and Vthoff = 1.3 V.

Overcurrent and thermal protection MOSFETs (one for the bridge A and one for the

bridge B) are also connected to these pins. Due to these connections some care needs to

configurations as shown in Figure 7 or Figure 8. If driven by an open drain (collector)

the driver is a standard push-pull structure the resistor R

connected as shown in Figure 8. The resistor R

2.2 k

Ω to 180 kΩ. Recommended values for R

More information on selecting the values is found in the overcurrent protection section.

Figure 6.

Logic inputs internal structure

Figure 7.

Figure 8.

5V

D01IN1329

ESD

PROTECTION

5V

5V

OPEN

COLLECTOR

OUTPUT

EN

D01IN1330

ESD

PROTECTION

5V

PUSH-PULL

OUTPUT

EN

D01IN1331

ESD

PROTECTION