The DRV81545 is
a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The
device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP
pin. This feature allows the user to either recirculate current or connect an external TVS
for inductive load turn-off.
The device can
be controlled through a hardware GPIO interface. Each channel features individual
overtemperature protection, and an analog current limit adjustable with an external resistor
on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the
duration of a current-limiting condition on the respective channel, helping to prevent
damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).
The DRV81545 is
a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The
device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP
pin. This feature allows the user to either recirculate current or connect an external TVS
for inductive load turn-off.
The device can
be controlled through a hardware GPIO interface. Each channel features individual
overtemperature protection, and an analog current limit adjustable with an external resistor
on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the
duration of a current-limiting condition on the respective channel, helping to prevent
damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).