Vibration Motor Driver IC Creates Worldwide Buzz in Personal Handsets

( 1 Jan 2008 )

The launch of Melexis MLX90283 single-phase brushless vibration motor driver ICs bring new capabilities in packaging and power efficiency to the vibrating alert feature on cell phones, PDAs or iPhones. The ICs allow increased battery life while still delivering strong and clearly detected vibrations. The devices can also benefit applications for force feedback or haptic interfaces in gaming systems, both handheld and home systems.

The chips integrate Hall-effect sensor, digital and power driver circuitry into a low profile ultra-thin QFN package and introduce the new proprietary "Active Start" design to improve single-phase vibration motor start-up reliability. The devices successfully apply the "Freewheel" principle to vibration motors by exploiting single-phase motor characteristics. The MLX90283 "Freewheel" intelligent driving enables the reduction of the average motor current consumption up to 10mA, while keeping the same rotation speed.

Melexis

www.melexis.com