Overview
The NCV7471DQ5R2G, produced by onsemi, is a System Basis Chip (SBC) designed for automotive Electronic Control Units (ECUs) in the body domain. This chip integrates multiple functions essential for automotive applications, including power management, communication interfaces, and monitoring capabilities. It ensures safe power-up sequences, controls mode transitions, and supports low-power modes, making it a comprehensive solution for modern automotive electronics.
Key Specifications
| Parameter | Description |
|---|---|
| Package | SSOP36-EP |
| Mounting Style | SMD/SMT |
| Number of Drivers | 1 Driver (CAN and LIN) |
| CAN Transceiver | ISO11898-2 and ISO11898-5 compliant, up to 1 Mbps |
| LIN Transceivers | LIN2.X and J2602 compliant, two transceivers |
| DC/DC Converter | Boost-Buck converter, 5 V output up to 500 mA |
| Low-Drop Regulator (VOUT2) | 5 V output up to 50 mA |
| Watchdog and Reset | Programmable watchdog, system reset, and interrupt requests |
| Serial Peripheral Interface (SPI) | 16-bit frames, mode settings, and chip status feedback |
| Protection and Monitoring | Main supply monitoring, VOUT supply diagnosis, thermal warning, and thermal shutdown protection |
| Compliance | AEC-Q100 qualified, Pb-free, halogen-free/BFR-free, and RoHS compliant |
Key Features
- Safe Power-Up Sequence: Ensures correct power-up and reaction to different supply conditions.
- Power Management: Controls mode transitions, including power management and wakeup treatment.
- Communication Interfaces: High-speed CAN transceiver and two LIN transceivers for multiple communication nodes or gateway functions.
- DC/DC Converter: Boost-Buck converter delivering up to 500 mA with ±2% accuracy.
- Low-Drop Regulator (VOUT2): Supplies external loads with up to 50 mA.
- Watchdog and Reset: Programmable watchdog and system reset capabilities.
- Serial Peripheral Interface (SPI): For communication with the ECU’s microcontroller, mode settings, and chip status feedback.
- Protection and Monitoring: Includes main supply monitoring, VOUT supply diagnosis, thermal warning, and thermal shutdown protection.
- Wakeup Input (WU): Edge-sensitive high-voltage input for wake-up or logical input.
Applications
The NCV7471DQ5R2G is designed for use in automotive Electronic Control Units (ECUs) within the body domain. It is suitable for various automotive applications, including:
- Body control modules
- Infotainment systems
- Sensor and actuator control
- Gateway units for multiple communication buses
Q & A
- What is the primary function of the NCV7471DQ5R2G?
The NCV7471DQ5R2G is a System Basis Chip (SBC) that integrates power management, communication interfaces, and monitoring functions for automotive ECUs.
- What communication interfaces does the NCV7471DQ5R2G support?
The chip supports a high-speed CAN transceiver and two LIN transceivers.
- What is the output capacity of the DC/DC converter?
The DC/DC converter can deliver up to 500 mA with an accuracy of ±2%.
- What is the purpose of the VOUT2 low-drop regulator?
The VOUT2 regulator supplies external loads with up to 50 mA.
- Does the NCV7471DQ5R2G have built-in protection features?
Yes, it includes main supply monitoring, VOUT supply diagnosis, thermal warning, and thermal shutdown protection.
- How does the watchdog function work?
The watchdog is programmable and monitors the ECU software, generating reset and interrupt requests as needed.
- What is the role of the SPI interface?
The SPI interface allows communication with the ECU’s microcontroller, enabling mode settings and chip status feedback.
- Is the NCV7471DQ5R2G compliant with automotive standards?
Yes, it is AEC-Q100 qualified, Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What is the purpose of the WU input?
The WU input is an edge-sensitive high-voltage input that can be used as a wake-up source or as a logical input.
- What kind of package does the NCV7471DQ5R2G come in?
The chip is packaged in an SSOP36-EP package.
