MTCH650T-I/SS

Sensor And Detector Interfaces Overview

The MTCH650T-I/SS is a high-voltage line driver featuring 21 level shifters, manufactured by Microchip Technology in a 28-pin SSOP package. It operates with an input voltage range of 1.8V to 5.5V and supports a maximum serial clock frequency of 1 MHz. The device requires an external boost voltage source within the 3.6V to 18V range for its high-voltage outputs. Key electrical characteristics include a quiescent current of less than 200 µA and a shutdown current of 1.5 µA typical. It functions within an industrial temperature range from -40°C to +85°C.

Sensor And Detector Interfaces Feature Summary

• Provides 21 independent high-voltage output lines controlled via a 3-wire serial interface.
• Features an Output Enable pin that allows efficient cycling of boost voltage without serial interface delays.
• Includes internal latch mechanisms for data retention during power-on reset events.
• Supports configurable soft-start functionality to limit initial in-rush currents.

Sensor And Detector Interfaces Applications

• Driving capacitive touch sensor electrodes requiring high-voltage signals.
• Controlling liquid crystal displays (LCD) or e-paper panels.
• Powering high-voltage analog front-end circuits in sensing applications.

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix 'I/SS' confirms the industrial temperature grade (-40°C to +85°C) and the SSOP-28 package type. Confirm that the 'T' prefix indicates tape-and-reel packaging if reel quantity is required for assembly. Ensure the design includes an external boost generator, as this component does not contain an internal switching regulator.

Sensor And Detector Interfaces Selection Notes

Select the MTCH650 variant over the MTCH652 when an external high-voltage supply is already available or preferred for system design flexibility. The MTCH650 lacks the built-in boost converter found in the MTCH652, offering 21 outputs compared to the MTCH652's 19. Verify that the external boost circuit can meet the peak current demands of the connected load.

Sensor And Detector Interfaces Part Context

This component belongs to the MTCH650/2 family of programmable voltage boost drivers with integrated level shifters. While the MTCH652 integrates a boost converter driven by an external PWM, the MTCH650 relies on an external VPPIN source. Both share identical serial interface protocols and output latch structures, differing primarily in power generation architecture and channel count.

Sensor And Detector Interfaces Replacement Considerations

The MTCH652 serves as a functional substitute if an internal boost converter is desired, provided the application can accommodate 19 outputs instead of 21. Direct pin-to-pin replacement is possible in SSOP-28 packages, but the VPPIN pin on the MTCH650 must be repurposed or left unconnected depending on the MTCH652 configuration.