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Linear's LDO Regulator runs Independent Inputs

Posted: 15 Mar 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Linear Technology? low dropout? regulator? keep alive?

Linear Technology Corporation has recently rolled out its latest low dropout regulator, the LT3030. The company's latest product is a dual low noise, low dropout regulator with independent inputs and independent shutdown control for each channel.

The LT3030's full feature set and low quiescent current of 115?A/70?A per regulator (operating) and Linear's latest device delivers continuous output current up to 750mA on one channel and 250mA on the other channel, with a low dropout voltage of only 300mV at full load. The LT3030 features a wide 1.8V to 20V input voltage range, delivering output voltages as low as 1.215V and up to 19.5V.

The device features ultra low 20?VRMS noise across a wide 10Hz to 100kHz bandwidth, a precision shutdown/UVLO threshold for each channel, tracking/sequencing capability and dual PWRGD flags to indicate output regulation per channel.

The LT3030 operates with very small, low cost, ceramic output capacitors, optimising stability and transient response. It is stable with only a 10?F ceramic output capacitor on the 750mA channel and a 3.3?F ceramic output capacitor on the 250mA channel. Internal protection circuitry includes reverse-battery, no reverse current flow from output to input, current limiting with foldback and thermal shutdown. The thermal shutdown circuitry protects both channels if an overload or fault condition occurs on either channel.

Its compact packages offer thermal resistances equivalent to much larger conventional packages. The device is available in the 20-lead thermally enhanced TSSOP and 28-lead 4mm x 5mm QFN packages. A wide variety of grades/temperature ranges are offered, including E and I grades -40C to +125C, H grade -40C to +150C and the high reliability MP grade -55C to +150C. 1,000-piece pricing starts at $3.27 for the E grade.

Further information regarding the LT3030 can be found here.





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