MX877R

Overview

The MX877R is an 8-channel high-voltage load driver manufactured by IXYS Integrated Circuits Division. It features push-pull outputs capable of driving loads up to 60V at 15mA per channel, with a total device current limit of 240mA when outputs are paralleled. The device operates on a logic supply range of 1.65V to 5.5V and a driver supply range of 6V to 60V. It utilizes a 3-wire serial interface for control and is housed in a 28-lead QFN package. The component is rated for operation between -40°C and +85°C.

Feature Summary

• Provides eight independent high-voltage push-pull output channels for direct load driving
• Supports synchronous updating across multiple packages via standard serial interface
• Allows output paralleling to increase total sink or source drive current capacity
• Operates with low-voltage logic inputs compatible with standard microprocessors

Applications

• Automotive lighting systems
• Industrial relay switching
• White goods control circuits
• Test and measurement equipment

Procurement Notes

Verify the specific suffix 'R' indicates the tape-and-reel packaging variant if required for automated assembly processes. Confirm that the 28-QFN package dimensions match the target PCB footprint. Check for end-of-life status as distribution availability may be limited compared to active inventory. Ensure voltage ratings align with the specific load requirements before integration.

Selection Notes

Select this component when eight isolated high-side or low-side switches are required in a compact form factor. The push-pull architecture eliminates the need for external pull-up or pull-down resistors typically associated with open-drain outputs. Consider the thermal dissipation capabilities of the QFN package if operating near maximum current limits. Verify compatibility with the system's serial communication protocol timing constraints.

Part Context

This part belongs to the MX877 series of high-voltage load drivers designed for automotive and industrial applications. It serves as a bridge between low-voltage digital controllers and higher-voltage analog loads. The series emphasizes simplified board design by integrating protection features and drive circuitry into a single small outline package.

Replacement Considerations

Public confirmed substitute part numbers: None identified.