DESCRIPTION

The L9349 is a monolithic integrated quad low side driver realized in an advanced MultipowerBCD mixed technology. The device is intended to drive valves in automotive environment.

The inputs are µP compatible. Particular care has been taken to protect the device against failures, to avoid electromagnetic interferences and to offer extensive real time diagnostic.

■ Quad power low side driver with 2 x 5A and 2 x 3A output current capability

■ Low RDSON typically 200mΩ and 300mΩ @ Tj = 25°C

■ Internal output clamping structures with VFB = 50V for fast inductive load current recirculation

■ Limited output voltage slew rate for low EMI

■ Protected µP compatible enable and input

■ Wide operating supply voltage range 4.5V to 32V

■ Real time diagnostic functions:

– Output shorted to GND

– Output shorted to VSS

– Open load detection in ON and OFF condition

– Load bypass detection

– Overtemperature detection

■ Device protection functions:

– Overload disable

– Selective thermal shutdown

■ Signal- and Power-Ground-loss shutdown