Power Electronics / Power Management


Load switch with programmable current limit

22 February 2017 Power Electronics / Power Management

The MPQ5073 from Monolithic Power Systems is a load switch to provide 2 A load protection covering a 0,5 V to 5,5 V voltage range.

Featuring low RDS(ON) in a QFN-12 (2 x 2 mm) package, it represents a highly efficient and space saving solution in notebook and tablet or other portable device applications.

With the soft start function, the MPQ5073 can avoid inrush current during circuit startup. It also provides programmable soft start time, output discharge functions, over-current protection and thermal shutdown features. The maximum load at the output (source) is current limited. This is accomplished by utilising a sense FET topology. The magnitude of the current limit is controlled by an external resistor from the ILIM pin to ground.

An internal charge pump drives the gate of the power device, allowing a very low on-resistance DMOS power FET of just 50 mΩ.

For more information contact NuVision Electronics, +27 (0)11 608 0144, gdeklerk@nuvisionelec.co.za, www.nuvisionelec.co.za



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