The LT3030 is a dual low noise, low dropout regulator with independent inputs and independent shutdown control for each channel. It 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 provides a wide 1.8V to 20V input voltage range, delivering output voltages as low as 1.215V and up to 19.5V. This low dropout regulator also features ultralow 20µVRMS 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's full feature set and low quiescent current of 115µA/70µA per regulator (operating) and <1µA each (in shutdown) make it ideal for battery-powered "keep alive" systems that require optimum run time, as well as microprocessor core logic supplies, tracking/sequencing supplies and general-purpose voltage conversion.The LT3030 operates with very small, low cost, ceramic output capacitors, optimizing stability and transient response. It is stable with only a 10µF ceramic output capacitor on the 750mA channel and a 3.3µF 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.The LT3030's compact packages are available in 20-lead thermally enhanced TSSOP and 28-lead 4mm x 5mm QFN packages in a wide variety of grades and temperature ranges. 1,000-piece pricing starts at $3.27.
