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Tiny LDO regulators dissipate up to 1.9W

Posted: 09 Jul 2009     Print Version  Bookmark and Share

Keywords:LDO  linear regulator  bias input  power-saving 

Maxim Integrated Products has unveiled the MAX15027-MAX15030 LDO linear regulators that operate from a 1.425V to 3.6V input voltage and deliver up to 1A (MAX15027/MAX15028) or 500mA (MAX15029/MAX15030) of output current.

The new regulators feature a bias input that allows the devices to be powered from an independent supply, making them suitable for always-on power supplies in automotive applications. The bias input allows the regulator's input to reduce current to a mere 2microamps (max) during shutdown.

This family of power-saving LDO regulators can dissipate up to 1.9W at 70°C and is ideal for a wide array of applications, including networking, storage, server, and telecom equipment.

The regulators offer ±2 per cent accuracy over line, load, and temperature, and dropout voltage as low as 75mV for the MAX15027 and MAX15028 or 40mV for the MAX15029 and MAX15030, under a full load. Other features include a capacitor-adjustable soft-start input, an enable input, and an adjustable feedback input to set the output voltage from 0.5V to 3.3V.

They come in 3mm x 3mm, thermally enhanced, 10-pin TDFN package and are fully specified over the -40°C to 125°C automotive temperature range. Prices start at Rs.44.09 ($0.90) (1000-up, FOB USA).

Get related application notes and technical articles on Power Design India.

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