Features
 AEC-Q100 qualified
 Engineered for ISO26262 compliant system
 1 pre-boost regulator and 1 pre-buck regulator
 1 linear 5 V regulator with 1 A output current
 3 independent self-protection 5 V tracking
regulator with 150 mA output.
 1 input voltage pin for monitor external
tracking.
 Coordinated soft start-up of all regulators
 4 channels LS injector LS drivers
 2 channels LS drivers for O2H load with current
sense
 2 channels LS camshaft or solenoid drivers
 5 channels LS relay drivers
 2 channels LS LED drivers
 3 channels LS/HS drivers with low battery
function for smart start
 1 channel LS main relay driver (MRD) with
internal diode for reverse battery protection
 5 channels pre-drivers for external FET drivers.
Pre-driver 1&3 configurable for O2H load with
external Rshunt-on the source of Ext.
N-channel MOS
 6 channels pre-drivers for internal or external
igniter drivers
 1 K-Line ISO9141/LIN 2.1 compliant
 Integrated charge-pump
 VRS-interface
 Watchdog
 Wake-up pin
 Temperature sensor and monitoring
 Stop-counter with wakeup
 Dual bandgap reference & oscillator
 Micro-second-channel MSC for differential
single ended mode
 SEO function
 CAN-FD with wakeup by CAN function
 Package LQFP100 exposed pad

Description
The L9788 is an integrated circuit designed for automotive engine management system.
L9788 is a device realized in ST BCD proprietary technology, able to provide the full set of power supplies and signal preprocessing peripherals needed to control a 4-cylinders internal combustion engine.