The L9524C is a control IC for up to six glow plugs of diesel engines. The glow plugs are switched by up to four external PWM-controlled N-channel Power MOSFETs or a single relay in high-side configuration. Supply voltage, battery voltage, junction temperature, switches, currents through the glow plugs, and charge pump voltage are monitored. A two-wire interface is used to communicate with the diesel engine management system.Quad gate driver for external N-channel Power MOSFETs in high-side configuration: Gates driven by PWM output signal Adjustable gate charge/discharge currents Limited gate-to-source voltages Negative clamping for inductive loads Advanced run-off control Regulation of the power through the glow plugsControl output for external relay driverBattery-voltage-compatible two-wire interfaceSupply voltage monitoring with shutdownBattery voltage monitoring with shutdownJunction temperature monitoring with shutdownMonitoring of currents through the glow plugs with shutdown at overcurrent (adjustable threshold)Monitoring of external switchesCharge pump voltage monitoring with shutdownActive clamping during load dump