T6819-TBQY

Overview

The T6819-TBQY is a six-channel N-channel power driver manufactured by Microchip Technology, designed for high-side or low-side load switching applications. It operates with a supply voltage range of 4.75V to 5.25V and supports load voltages from 5.6V to 40V. Each channel delivers a maximum output current of 1.5A with a typical on-resistance of 500 milliohms. The device utilizes an SPI interface for control and integrates comprehensive fault protection features including fixed current limiting, open-load detection, over-temperature shutdown, and under-voltage lockout. It is available in a 16-SOIC surface-mount package and functions within a junction temperature range of -40°C to 150°C.

Feature Summary

• Six-channel N-channel power driver architecture supporting independent high-side or low-side configuration
• Serial Peripheral Interface (SPI) control for precise digital management of load states
• Integrated diagnostic capabilities including open-load detection and fixed current limiting
• Robust thermal and electrical protection mechanisms ensuring operational safety under fault conditions

Applications

• Automotive lighting systems requiring multi-channel load control
• Industrial solenoid and valve actuation circuits
• High-side or low-side switching in automotive body electronics modules
• General purpose load driver applications in harsh environment industrial equipment

Procurement Notes

Verify the specific suffix TBQY indicates tape-and-reel packaging when sourcing components. Confirm the component status as discontinued or obsolete through official Microchip channels prior to design finalization. Ensure compatibility with existing SPI bus protocols and validate that the 16-SOIC footprint matches the target PCB layout constraints. Cross-reference the exact part number against current distributor catalogs to avoid substitution errors due to legacy status.

Selection Notes

Select this component when a single IC must manage multiple loads with integrated diagnostics. The SPI interface reduces pin count compared to parallel control schemes. Verify that the 1.5A per-channel current rating meets the peak load requirements. Consider the wide operating temperature range for automotive or industrial deployments. Ensure the system voltage remains within the specified 5.6V to 40V load range to prevent device damage.

Part Context

The T6819 series represents Microchip's solution for compact, multi-channel power distribution. This family integrates DMOS outputs with serial control logic to simplify board design. The T6819-TBQY variant specifically denotes the tape-and-reel packaging option within the 16-SOIC form factor. It serves as a direct replacement for older discrete driver solutions, offering higher integration and enhanced diagnostic feedback for modern electronic control units.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the available documentation. Designers should consult Microchip directly for qualified alternatives or obsolescence management strategies given the discontinued status of this specific model.