ATA663431-GDQW

Drivers, Receivers, Transceivers Overview

The ATA663431-GDQW is a System Basis Chip (SBC) integrating a LIN transceiver, voltage regulator, watchdog, and high-side switch. It supports LIN 2.0 through 2.2A protocols with data rates up to 20 Kbaud. The supply voltage range is 5V to 28V, with a maximum rating of 40V. It features an 85 mA linear low-dropout regulator providing a stable 3.3V output. Current consumption is typically 10 µA in sleep mode and 47 µA in silent mode. The device operates within a temperature range of -40°C to 150°C and is housed in a 16-lead VDFN package measuring 3 x 5.5 mm.

Drivers, Receivers, Transceivers Feature Summary

• Integrated LIN physical layer compliant with ISO 17987-4 and SAE J2602-2 standards
• Built-in 85 mA LDO voltage regulator with undervoltage detection and reset output
• Configurable window watchdog with Limp Home failure output for safety monitoring
• Multiple wake-up sources including LIN bus, local WKin pin, and CL15 ignition detection

Drivers, Receivers, Transceivers Applications

• Automotive body control modules requiring LIN communication
• Low-power sensor nodes in vehicle convenience electronics
• Actuator interfaces with integrated power switching capabilities
• ECUs designed for functional safety compliance in automotive environments

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix GDQW corresponds to the 16-VDFN package with wettable flanks. Confirm the 3.3V regulator output requirement matches the system design, as the 5V variant is designated by a different model number. Ensure component authenticity through authorized Microchip distributors to guarantee AEC-Q100 qualification status.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a 3.3V logic interface is required for the connected microcontroller. Choose over the 5V variant if the application demands lower regulator dissipation at higher supply voltages. Verify that the 85 mA regulator current capability meets the peak load requirements of the attached peripheral devices and sensors.

Drivers, Receivers, Transceivers Part Context

This part belongs to the ATA6634xx family of LIN System Basis Chips manufactured by Microchip Technology. It serves as a central node controller for LIN bus networks, combining communication and power management functions. The device is designed to replace discrete solutions, reducing board space and component count in automotive applications.

Drivers, Receivers, Transceivers Replacement Considerations

The ATA663454-GDQW is a direct functional substitute offering a 5.0V regulator output instead of 3.3V. Both share identical pinouts, packages, and core functionalities. Ensure the downstream microcontroller logic levels are compatible with the selected regulator voltage before swapping.