ATA6838-PXQW

Overview

The ATA6838-PXQW is a hex half-bridge driver manufactured by Microchip Technology, designed for automotive and industrial applications. It integrates six high-side and six low-side drivers to control up to six independent loads via a serial interface. The device supports supply voltages from 5.5V to 40V and delivers output currents up to 1A per channel. Key electrical parameters include a typical on-resistance of 1.0Ω at 25°C and a maximum of 1.8Ω at 150°C. It operates within a junction temperature range of -40°C to +150°C and features a very low standby quiescent current of less than 20µA.

Feature Summary

• Integrates six half-bridge outputs formed by separate high-side and low-side drivers for versatile load control
• Features a 5V-compatible serial data interface supporting clock frequencies up to 2 MHz with daisy-chaining capability
• Includes comprehensive protection mechanisms such as short-circuit protection, overtemperature warning, and undervoltage lockout
• Provides various diagnosis functions including open load detection, shorted output monitoring, and power supply failure indication

Applications

• Control of DC motors using H-bridge configurations in automotive systems
• Driving inductive loads such as solenoids and relays
• Switching capacitive and resistive loads in industrial environments
• Illumination control for bulbs and lighting systems

Procurement Notes

Verify the specific suffix PXQW against the official datasheet to confirm package type and tape-and-reel specifications. Confirm end-of-life status and availability through authorized distributors. Ensure compatibility with system voltage ranges and thermal requirements before integration.

Selection Notes

Select this component when a single IC needs to drive multiple distinct loads with individual serial control. It is suitable for designs requiring integrated protection and diagnostic feedback. Consider the QFN24 package constraints and thermal dissipation capabilities for high-current applications.

Part Context

This part belongs to the ATA68xx series of smart power devices developed using SOI technology. It serves as a central driver unit in complex electronic control units where space efficiency and multi-channel control are critical. The series is widely used in automotive body electronics and industrial motor control modules.

Replacement Considerations

Check for direct pin-to-pin replacements within the ATA68xx family. Verify that alternative components support the same 40V supply range and 1A output current. Ensure compatible serial interface protocols and package dimensions for board-level substitution.