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.
The L9524C is an integrated circuit designed to control up to six glow plugs in diesel engines. It manages switching via external N-channel Power MOSFETs or a single relay in high-side configuration, utilizing PWM output signals for precise regulation of power through the glow plugs.
The device incorporates extensive monitoring capabilities including supply voltage, battery voltage, junction temperature, and currents flowing through the glow plugs. It features an advanced run-off control and active clamping during load dump conditions to ensure system reliability.
| Number of glow plugs supported | Up to six |
|---|---|
| Supply voltage range | -0.3 to 45 V |
| Thermal shutdown threshold | 125 to 150 °C |
| Charge pump voltage range | -0.3 to 45 V |
Pin MS selects between transistor modes (transistor sense / shunt sense) and relay mode.
It has a quad gate driver for external N-channel Power MOSFETs.
Yes, it includes regulation of the power through the glow plugs and advanced run-off control.