Power Electronics / Power Management


Dual low-noise LDO

17 February 2010 Power Electronics / Power Management

austriamicrosystems has expanded its low dropout regulator portfolio with the dual LDO AS1374, capable of delivering up to 200 mA continuous load current at each output. It operates from a 2 to 5,5 V supply, making it ideal for portable battery powered applications. Offering low 120 mV dropout at 200 mA load currents at each output, it has been designed and optimised to work with low-cost, small-capacitance ceramic capacitors. The IC is available with pre-programmed output voltages between 1,2 V and 3,6 V (programmable in 50 mV steps). It uses an advanced architecture to achieve low output voltage noise of 20 μVRMS and a power supply rejection ratio of better than 85 dB (at 1 kHz). Two active-high enable pins allow the possibility to switch on or off each output independently.

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