BU21072MUV
Capacitive Sensor Switch Control ICs

BU21072MUV/BU21078MUV is a capacitive sensor controller for switch operation.
In addition to a regular simple switch, support matrix switches which are arranged in the matrix sensors. If external noise and temperature drift are detected, the automatic self-calibration is operated.
Include LED controller with PWM function.

Data Sheet Buy * Sample *
* This is a standard-grade product.
For Automotive usage, please contact Sales.

Product Detail

 
Part Number | BU21072MUV-E2
Status | Recommended
Package | VQFN024V4040
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS | Yes

Specifications:

Vcc(Min.)[V]

3.0

Vcc(Max.)[V]

5.5

Sensor input channels

10

LED control channels

6

Interface

I2C

Matrix key

4 x 4

Operating Temperature (Min.)[°C]

-20

Operating Temperature (Max.)[°C]

85

Features:

・ 10 capacitive sensor ports. (BU21072MUV) 12 capacitive sensor ports. (BU21078MUV)
・ Supported Matrix switches. Maximum 16 switches. (BU21072MUV) Maximum 36 switches. (BU21078MUV)
・ Automatic self-calibration.
・ Held touch detection.
・ LED controller with PWM function.
・ Inform the detected result of switch operation by interrupt.
・ 2-wire serial bus interface.
・ 3.3V single power supply.
・ Built-in Power-On-Reset and Oscillator.

Design Resources

 

Technical Articles

Schematic Design & Verification

  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Thermal Resistance

Tools

Simulations (Login Required)

  • Method for Exporting Circuit Data (ROHM Solution Simulator)

2D/3D/CAD

  • VQFN024V4040 Footprint / Symbol

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)