Microchip ATA6826C-TUQW: A System Basis Chip for LIN and DC Motor Control Applications

The increasing complexity of modern automotive and industrial electronic systems demands highly integrated and robust solutions. Addressing this need, the Microchip ATA6826C-TUQW stands out as a premier System Basis Chip (SBC) designed to simplify and enhance designs incorporating Local Interconnect Network (LIN) communication and DC motor control.

This highly integrated circuit combines several critical functions into a single 32-pin QFN package, significantly reducing the component count, board space, and overall system cost. Its core strength lies in its ability to serve as a centralized power and communication hub for a microcontroller (MCU) in a wide array of applications, from automotive body control modules (e.g., window lifters, sunroofs, seat control) to industrial automation systems.

Key Features and Functionalities:

The ATA6826C-TUQW is engineered with a suite of powerful features:

LIN System Basis Chip: It includes a fully compliant LIN 2.x/SAE J2602 transceiver, serving as the physical layer interface between a host MCU and a LIN bus. This facilitates reliable serial communication within a networked system.

Integrated DC Motor Drivers: A significant feature is the inclusion of three half-bridge outputs capable of driving up to three DC motors or one DC motor with multiple windings. Each output can deliver a continuous current of up to 350 mA, making it ideal for small to medium-power motors.

Voltage Regulators: The chip houses a 5 V/100 mA and a 3.3 V or 5 V/50 mA low-dropout (LDO) voltage regulator to power the external MCU and associated sensors, ensuring stable operation.

Comprehensive Protection and Diagnostics: Robustness is paramount. The device is equipped with extensive protection mechanisms, including overtemperature shutdown, overvoltage protection on VS and VBAT, and load-dump recovery. It also offers diagnostic feedback to the MCU, enhancing system reliability and safety.

Wake-up Capabilities: It supports wake-up functionality through both the LIN bus and a dedicated wake-up input pin, enabling low-power sleep modes critical for automotive applications.

Application Advantages:

By integrating the communication interface, motor drivers, and power supply into a single device, the ATA6826C-TUQW offers unparalleled advantages. It simplifies the PCB layout, accelerates time-to-market, and improves the overall reliability of the system by minimizing external interconnections. Its robust design and AEC-Q100 qualification make it exceptionally suitable for the harsh electrical and environmental conditions found in automotive electronics.

ICGOOODFIND

The Microchip ATA6826C-TUQW is an exemplary System Basis Chip that provides a compact, cost-effective, and highly reliable solution for designers. Its powerful integration of LIN communication, multiple DC motor drivers, and voltage regulation into a single package makes it an indispensable component for creating efficient and sophisticated mechatronic systems in automotive and industrial markets.

Keywords:

1. System Basis Chip (SBC)

2. LIN Transceiver

3. DC Motor Driver

4. Integrated Circuit

5. Automotive Applications