24 August 2010
High speed ldo needs no output capacitor
Torex has launched a cmos low drop out (ldo) regulator which it says integrates internal phase compensation circuitry, removing the need for output capacitors and reducing the necessary pcb layout area.
According to Torex, even with no capacitor, the XC6503 series can deliver output currents up to 500mA and has fixed output voltages from 1.2 to 5.0V in 0.05V increments.
The series has been designed to provide fast transient response and high psrr (55dB@1kHz) while consuming around 15uA in operation and under 0.1uA in standby mode. The voltage drop is optimised to maximise battery life with 300mV required at 500mA.
It has integrated short circuit protection; thermal shutdown and a built in current limiter. According to Torex, it can also work with an output capacitor if required and includes an optional CL discharge function to ensure that the VOUT pin drops down to ground quickly, should the XC6503 be turned off via the CE pin.
The USP-4 package measures 1.2 x 1.6 x 0.6mm.
Author
Chris Shaw
Supporting Information
Websites
http://www.torex-europe.com/products/range/320
Companies
Torex Semiconductor Ltd
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