ATA6838C-PXQW-1

Overview

The ATA6838C-PXQW-1 is a fully integrated hex half-bridge motor driver manufactured by Microchip Technology. It features six high-side and six low-side drivers capable of controlling up to six independent loads, including brushed DC motors, bulbs, resistors, capacitors, and inductors. The device utilizes Smart Power SOI technology and includes an SPI serial interface for control. Key electrical parameters include a supply voltage range of 4.75V to 5.25V for logic and 5.5V to 40V for the bridge, with output currents up to 950mA. It operates within a junction temperature range of -40°C to 150°C and is housed in a 24-VQFN package.

Feature Summary

• Fully integrated hex half-bridge architecture with six independently controllable high-side and low-side drivers.
• Comprehensive protection mechanisms including short-circuit protection, overtemperature prewarning, and undervoltage lockout.
• Serial data interface compatible with standard microcontrollers, supporting daisy-chaining capabilities.
• Low quiescent current consumption in standby mode to enhance energy efficiency.

Applications

• Control of brushed DC motors in automotive and industrial systems
• Driving incandescent lamps and lighting loads
• Actuation of resistive, capacitive, and inductive loads
• General-purpose load switching in smart power applications

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified partners. Confirm RoHS compliance status and check for specific manufacturing date codes relevant to project timelines. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering. Validate that the received part number matches the exact suffix specifications required for your design integration.

Selection Notes

Select this component when a compact solution for driving multiple independent loads is required. It is suitable for designs needing integrated power MOSFETs with minimal external components. Consider the thermal performance of the QFN package and ensure adequate PCB copper area for heat dissipation. Verify that the serial interface timing meets the microcontroller's clock frequency requirements for reliable communication.

Part Context

The ATA6838 series belongs to Microchip's family of smart power devices designed for robust load control. These ICs combine logic control with power output stages in a single package, reducing board space and complexity. The ATA6838C variant specifically targets applications requiring precise control over various load types with built-in diagnostic and protection features for enhanced system reliability.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Check Microchip official resources for potential obsolescence notices or recommended upgrades if this component is discontinued.