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High-side n-channel MOSFET driver integrates charge pump

Posted: 07 Nov 2012     Print Version  Bookmark and Share

Keywords:MOSFET  driver  charge pump 

Micrel Inc. unveils the MIC5019, a tiny high-side MOSFET driver with integrated charge pump designed to switch an N-Channel enhancement-mode MOSFET in high-side switch applications. The device is targeted at load switches, solenoid drivers and motor driver applications.

Micrel's MIC5019 MOSFET driver claims to remain turned on even as the source voltage approaches the supply voltage utilising its internal charge pump to drive the MOSFET gate voltage higher than the supply voltage, according to the firm.

The MIC5019 features a tiny 4-pin 1.2mm x 1.2mm thin QFN package and a 2.7—9V supply voltage range. It offers a 16V gate drive at VDD = 9V and an 8V gate drive at VDD = 2.7V. Operating in low- and high-side configurations, it has a 150µA typical supply current at VDD = 5V and < 1µA shutdown supply current. The device operates at -40°C to +125°C junction temperature range.

The MIC5019 is currently available in volume, and pricing starts at Rs.26.09 ($0.48) for 1K quantity.





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