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1,090 pcs
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1090 pcs | On Request | 1 | On Request | On Request | 17+ | On Request | On Request |
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The BU21079F-E2 is a capacitive switch controller IC designed for touch and proximity sensing in various electronic devices. It integrates a capacitive sensor analog front end, A/D converter, and microcontroller logic with an I2C-compatible 2-wire serial interface. The device operates from a single power supply ranging from 3.0V to 5.5V and features automatic self-calibration to compensate for external noise and temperature drift.
Key electrical specifications include a typical operating current of 2.5 mA and a typical detect cycle time of 6 msec. The IC supports up to 8 capacitive sensor ports and can be configured to scan up to 16 switches in a matrix arrangement. It also provides continued touch detection and generates an interrupt when a switch operation is detected, making it suitable for low-power applications.
The BU21079F-E2 is available in a 16-SOIC (0.173", 4.40mm Width) package, also designated as 16-SOP, with surface-mount mounting. Typical applications include electronic devices with multiple switches, information appliances such as printers, AV equipment like digital TVs and HDD recorders, notebook PCs, and home appliances including air-conditioners, refrigerators, and rice cookers.
The operating voltage range is 3.0V to 5.5V.
The operating temperature range is -25°C to 85°C.
The package is 16-SOIC (0.173", 4.40mm Width), also known as 16-SOP.
It is listed as RoHS3 Compliant, but this is unverified and has low confidence.
It has 8 capacitive sensor ports.
It uses a 2-wire serial bus interface compatible with I2C.
The typical detect cycle time is 6 msec.