US 11,720,128 B2
Voltage regulator
Enrico Mammei, Vittuone (IT); Francesco Ravelli, Villa di Serio (IT); Edoardo Contini, Milan (IT); and Paolo Pulici, Lainate (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Jun. 29, 2021, as Appl. No. 17/362,532.
Prior Publication US 2022/0413531 A1, Dec. 29, 2022
Int. Cl. G05F 1/565 (2006.01); G11B 5/012 (2006.01); G05F 1/575 (2006.01)
CPC G05F 1/565 (2013.01) [G05F 1/575 (2013.01); G11B 5/012 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A linear voltage regulator comprising:
an output transistor having a first current path terminal configured to be coupled to a load, and a second current path terminal coupled to a first supply terminal, wherein the output transistor is configured to provide, at the first current path terminal, a regulated output voltage;
a voltage source circuit configured to provide, in an open loop manner, a first voltage to a control terminal of the output transistor; and
a feedback loop coupled between the first current path terminal of the output transistor and the control terminal of the output transistor, the feedback loop comprising a sense transistor having a first current path terminal coupled to the first current path terminal of the output transistor.