Low noise LDO regulator offers independent inputs
1 min read
Linear Technology has announced the LT3030, a dual, low noise, low dropout regulator with independent inputs and independent shutdown control for each channel.
The 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 regulator features a wide 1.8 to 20V input voltage range, delivering output voltages as low as 1.215V and up to 19.5V. The device features ultra low 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 115/70µA per regulator (operating) and <1µA each (in shutdown) makes it suitable 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 small, low cost, ceramic output capacitors, optimising 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.
