Overview
The L9779WD-SPI is a multifunction integrated circuit designed by STMicroelectronics for automotive environments, particularly for engine management systems. It is implemented in BCD6S technology and assembled in the HiQUAD-64 power package. This IC provides a comprehensive set of functions necessary for standard engine management control units, making it a crucial component in modern automotive systems.
Key Specifications
| Attribute | Description |
|---|---|
| Package | HiQUAD-64 |
| Packing | Tray, Tape and Reel |
| Voltage Regulators | 5 V logic regulator, 3.3 V logic regulator, 5 V tracking sensor supply |
| Power Management | Power latch with Secure Engine Off (SEO) functionality, main relay driver, protected low-side drivers |
| Drivers | IGBT pre-drivers (IGN1 to 4), configurable power stages (CPS) for stepper motor and high-side/low-side drivers |
| Interfaces | SPI 16-bit frame, ISO9141 interface (K-Line), high speed CAN transceiver |
| Compliance | VDA 2.0 with 3 level Watchdog |
| Thermal Management | Thermal warning and shutdown |
Key Features
- 5 V and 3.3 V logic regulators and a 5 V tracking sensor supply
- Smart reset function and power latch with Secure Engine Off (SEO) functionality
- Flying wheel interface function (VRS) with adaptive time and amplitude control
- Protected low-side relay drivers and injector drivers
- IGBT pre-drivers with parallel input
- Configurable power stages (CPS) for stepper motor and high-side/low-side drivers
- SPI 16-bit frame, ISO9141 interface (K-Line), and high speed CAN transceiver
- VDA 2.0 compliance with 3 level Watchdog
- Thermal warning and shutdown
Applications
The L9779WD-SPI is primarily designed for automotive engine management systems. It is used to drive various loads such as injectors, ignitions, and relays, and to interface with variable reluctance sensors. This IC is also suitable for advanced driver-assistance systems (ADAS) and other powertrain applications.
Q & A
- What is the primary application of the L9779WD-SPI?
The L9779WD-SPI is primarily designed for automotive engine management systems. - What technology is the L9779WD-SPI implemented in?
The L9779WD-SPI is implemented in BCD6S technology. - What type of package is the L9779WD-SPI assembled in?
The L9779WD-SPI is assembled in the HiQUAD-64 power package. - What are the key voltage regulators provided by the L9779WD-SPI?
The IC provides 5 V and 3.3 V logic regulators and a 5 V tracking sensor supply. - Does the L9779WD-SPI have thermal management features?
Yes, it includes thermal warning and shutdown features. - What communication interfaces does the L9779WD-SPI support?
The IC supports SPI 16-bit frame, ISO9141 interface (K-Line), and high speed CAN transceiver. - Is the L9779WD-SPI compliant with any specific automotive standards?
Yes, it is compliant with VDA 2.0 and includes a 3 level Watchdog. - What types of drivers are included in the L9779WD-SPI?
The IC includes IGBT pre-drivers, protected low-side drivers, and configurable power stages (CPS). - How is the power management handled in the L9779WD-SPI?
The IC features a power latch with Secure Engine Off (SEO) functionality and main relay drivers. - Can the L9779WD-SPI be used in ADAS applications?
Yes, it is engineered for ADAS applications among other powertrain uses.
