ATA6847T-5050E/NHX

Overview

The ATA6847T-5050E/NHX is a three-phase brushless DC motor gate driver system basis chip designed for automotive applications. It integrates a 42V motor driver with integrated linear regulators providing 5V and 3.3V outputs, alongside a 5V operational amplifier. The device operates on a supply voltage range of 3V to 42V and supports PWM and SPI interfaces. It utilizes NMOS technology and features a 40-pin VQFN package. The component is rated for an operating temperature range of -40°C to 125°C (junction temperature) and is manufactured using advanced SOI technology.

Feature Summary

• Integrates a three-phase brushless motor gate driver with built-in power management including 5V and 3.3V linear regulators.
• Includes a dedicated 5V operational amplifier for signal processing within the motor control circuit.
• Supports digital communication via SPI interface and analog control through PWM signals.
• Constructed using advanced Silicon-On-Insulator (SOI) technology for robust performance in harsh environments.

Applications

• Brushless DC motor control in automotive systems
• General purpose motor driver applications requiring integrated regulation
• Automotive ignition and motion control subsystems

Procurement Notes

Verify the specific suffix '5050' indicates the inclusion of a 5V op-amp, distinguishing it from variants like the 5033 which may have different internal configurations. Confirm the 40-pin VQFN footprint compatibility with your PCB design. Ensure the operating junction temperature rating aligns with your thermal management strategy. Check RoHS compliance status as required by your manufacturing standards. Validate that the SPI and PWM interface requirements match your microcontroller capabilities.

Selection Notes

Select this component when a combined solution for motor driving and power regulation is required to reduce board space. The integrated 5V op-amp makes it suitable for applications needing signal conditioning without external components. Consider the 42V withstand capability for direct battery-connected automotive loads. The SOI technology offers advantages in noise immunity compared to standard CMOS processes. Evaluate the thermal dissipation requirements of the VQFN package for high-current scenarios.

Part Context

This part belongs to the Microchip ATA6847 family of System Basis Chips (SBCs). These chips are specifically engineered for automotive BLDC motor applications, combining gate driving, power management, and diagnostic functions into a single compact package. The family leverages SOI technology to provide high reliability and integration levels suitable for demanding automotive environments.

Replacement Considerations

The ATA6847T-5033E/NHX is a related variant but features a 3.3V op-amp instead of the 5V op-amp found in the 5050 version. Verify if the op-amp voltage level is critical for your signal chain before substituting. Other parts in the ATA6847 series may lack the integrated regulators or op-amps, requiring additional external components.