55V, 2A 4-channel low-side driver with independent overtemperature and overcurrent protection

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).