myMectronic
myMectronic

A Premier B2B Part Search

ROHM BU21182FSE2 Capacitive Switch Controller

The BU21182FS is a capacitive switch controller IC designed for applications such as office automation, AV appliances, and home appliances. It features 20 capacitive sensor ports, switch ON/OFF/Long Press detection, noise calibration, drift calibration, adjustable detection time, and a 2-wire serial bus interface. Operating within 3.0V to 5.5V supply, it supports multiple switch patterns and includes advanced calibration and noise filtering functions, making it suitable for electrical equipment with multiple switches in various environments.

Authorized Distributors
Source:DigiKey
Part No:BU21182FS-E2
Stock:0
Inv Date:06-09-2026
Price: Unit price: $2.85978
Buy/RFQ:
Part No:BU21182FS-E2
Stock:635
Inv Date:06-10-2026
Price: Unit price: $4.58
Buy/RFQ:

ROHM BU21182FSE2 Capacitive Switch Controller Specifications:

  • Power Supply Voltage Range: 3.0V to 5.5V
  • Operating Temperature Range: -25°C to +85°C
  • Operating Current: 3.5mA (Typ)
  • Package: SSOP-A32, Dimensions: 13.60mm x 7.80mm x 2.01mm
  • Supports 20 capacitive sensor ports
  • Detection functions: ON/OFF/Long Press, Repeated Long Press, Noise and Drift Calibration
  • Serial Bus Interface: 2-wire, support for I2C protocol, address modes 0x5C/0x5D
  • Threshold configuration for switch detection, sensitivity adjustment, and filter settings
  • Includes multiple detection, calibration, and masking registers for flexible control
  • Supports multi-pattern switch detection with configuration registers
  • Built-in LDO outputs: AVDD (2.8V) and DVDD (1.5V)
  • Supports detection thresholds, timing, sensitivity, and calibration adjustments via configuration registers
  • Maximum Junction Temperature: 125°C, Storage: -55°C to +125°C

Buy the ROHM BU21182FS – Reliable Capacitive Switch Controller for Industrial Applications

Order the ROHM BU21182FS capacitive switch controller online today and ensure reliable switch detection with advanced calibration, multiple sensor support, and noise filtering. Designed for industrial and home automation, this IC provides high precision in ON/OFF/Long Press detection, adjustable thresholds, and customizable detection times. Its compact SSOP-A32 package with integrated LDO outputs makes it ideal for various electronic systems requiring stable and accurate touch control. Experience seamless integration, robust performance, and long-term durability by purchasing online now.

Get ROHM BU21182FS today—built for precise sensing, noise filtering, and long-lasting durability in automation and home appliances.

Frequently Asked Questions

Where can I buy ROHM BU21182FSE2?

You can click on the BUY or RFQ button to purchase BU21182FSE2 from an authorized ROHM distributor.

How do I troubleshoot issues or seek technical support for part BU21182FSE2?

You can download the BU21182FSE2 datasheet or visit the ROHM website for support.

Who is the manufacturer of BU21182FSE2?

ROHM

ROHM Part List

Browse and search other ROHM parts, locate datasheets and stock

Sponsored by