Low-dropout linear regulator and corresponding method
AssigneeSTMicroelectronics Design and Application S.R.O.
InventorKarel Napravnik
Life of this patent
Estimating the term…
Abstract
A low-dropout linear regulator includes an error amplifier comprising a cascaded arrangement of a differential amplifier and a gain stage having interposed therebetween a frequency compensation network for a loading current to flow therethrough. The regulator includes a current limiter inserted the flow-path of the loading current for the compensation network to increase the slew rate of the output of the differential amplifier by dispensing with the capacitive load in the frequency compensation network during load transients in the regulator.
Claims9
A low-dropout linear regulator comprising:
- an error amplifier including a cascaded arrangement of a differential amplifier and a gain stage having interposed therebetween a frequency compensation network for a loading current to flow therethrough;
- and
- a current limiter inserted the flow-path of said loading current for said compensation network.
A method of improving load transient response in a low-dropout linear regulator including an error amplifier including a cascaded arrangement of a differential amplifier and a gain stage having interposed therebetween a frequency compensation network with a capacitive load in said frequency compensation network, the method including increasing the slew rate of the output of said differential amplifier by dispensing with said capacitive load in said frequency compensation network during load transients in said low-dropout linear regulator.
Dependencies are inferred from the claim text.