Monthly Archives

September 2017

MAS6250 – 35Vpp Piezo and LED Driver IC for Multi-Tone Sound

By News

Helsinki, Finland – 15 September 2017 

MAS6250 – Piezo and LED Driver IC for Multi-Tone Sound

Micro Analog Systems Oy introduces combined piezo and LED driver IC in a small QFN-16 3x3x0.75 mm package. It is a high efficiency, easy to use and low cost solution for piezo sound applications requiring high sound pressure level (SPL). Typical applications include piezo buzzers, various alarm products, white goods and handheld or portable devices with sound feature. The MAS6250 includes LED driver which offers additional area and cost saving in many applications using LEDs.

The heart of the IC is a high efficiency synchronous boost DC/DC converter requiring only a small 0806 sized 2.2mH inductor. The output voltage is regulated and adjustable up to 17.5V by external resistors. The bridge-tied load (BTL) output of the piezo driver is capable of driving up to 35Vpp signal in a very wide supply voltage range from 1.2V to 5.5V. In addition to multi-tone sound the device supports single-tone sound which frequency is adjustable by external resistor.

The LED driver supports use of pulse-width modulation (PWM) dimming control and is capable of driving up to 15mA current. The LED current is adjustable by external resistor. When not used the device enters shut down operating mode (typ 0.11uA) to save power.

The MAS6250 is available in QFN-16 3x3x0.75 mm package. Samples are available. Price for a QFN packaged device is USD 0.98 (3 000 pcs). For further information and samples, please contact Micro Analog Systems Oy at