SX8639I05AULTRT

Description：IC TOUCH BUTTON CTLR 28QFN
Series：-

SKU:03d32e6c7f65 Category: Sensor, Capacitive Touch Brand: Semtech Corporation

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Product introduction

Product Detailed Parameters

Description：IC TOUCH BUTTON CTLR 28QFN
Series：-
Mfr：Semtech Corporation
Package：Tape & Reel (TR)
Type：Buttons, Wheel
Proximity Detection：Yes
Number of Inputs：Up to 8
LED Driver Channels：8
Interface：I2C
Resolution：10 b
Voltage - Supply：2.7V ~ 3.6V
Current - Supply：175µA
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：28-VFQFN
Supplier Device Package：28-QFN (4x4)
Grade：-
Qualification：-

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SX8639I05AULTRT

Overview

The SX8639I05AULTRT is a low-power capacitive touch controller manufactured by Semtech. It supports up to nine sensors, including buttons and wheels, with integrated proximity detection capabilities. The device features an I2C interface for communication and operates within a supply voltage range of 1.7V to 3.6V. It functions reliably across an industrial temperature range from -40°C to +85°C. The component is housed in a compact MLPQ-UT-28 package, suitable for space-constrained designs requiring robust touch input handling.

Feature Summary

Supports capacitive sensing for buttons and rotary wheels
Integrates proximity detection functionality
Utilizes I2C digital interface for system connectivity

Applications

Consumer electronics touch interfaces
Industrial control panels
Automotive infotainment systems

Procurement Notes

Verify the specific suffix ULTRT against the official Semtech datasheet to confirm reel packaging and tape specifications. Ensure the I2C address configuration matches the target system design requirements before integration. Cross-reference the MLPQ-UT-28 package dimensions with PCB layout guidelines to ensure mechanical compatibility.

Selection Notes

Select this component when nine independent sensor channels are required alongside proximity sensing. Compare power consumption metrics against the SX8638 series if fewer sensors suffice. Verify that the operating voltage range aligns with the host system's power rails. Confirm that the I2C speed requirements are met by the controller's interface capabilities.

Part Context

This part belongs to Semtech's SX86xx family of capacitive touch controllers. It shares architectural similarities with the SX8638 but offers additional sensor channel capacity. The family is designed for low-power applications requiring reliable touch input in various environments.

Replacement Considerations

The SX8638I05AULTRT serves as a functional substitute if eight sensors are sufficient. Verify pinout compatibility and software register mapping differences between the nine-channel SX8639 and the eight-channel SX8638 before substitution.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.