Datasheet

Electrical specifications L6375S
8/17 Doc ID 12603 Rev 8
2.4 Switching waveform
Figure 3. Switching waveform
2.5 Input section
An single ended input TTL/CMOS compatible with a wide voltage range and high noise
immunity (thanks to a built-in hysteresis) is available.
2.6 Overtemperature protection (OVT)
An on-chip overtemperature protection provides excellent protection of the device in
extreme conditions. Whenever the temperature, measured on a central portion of the chip,
exceeds T
max
= 150 °C (typical value), the device is shut off, and the DIAG2 output goes
LOW. Normal operation is resumed as the chip temperature (normally after a few seconds)
falls below T
max
- T
hys
= 130 °C (typical value). The hysteresis avoids that an intermittent
behavior takes place.
2.7 Undervoltage protection (UV)
The supply voltage is expected to range from 8 to 35 V. In this range the device operates
correctly. To avoid any malfunctioning the supply voltage is continuously monitored to
provide an undervoltage protection. As V
S
falls below V
sth
-V
shys
(typically 7.5 V, see
Figure 1) the output Power MOSFET is switched off and DIAG1 and DIAG2 (see
Section 2.11). Normal operation is resumed as soon as V
S
exceeds V
sth
. The hysteretic
behavior prevents intermittent operation at low supply voltage.