US 12,147,254 B2
Voltage regulating circuit for keeping voltage headroom
Chun-Hung Chen, Yun-Lin County (TW)
Assigned to NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed by NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed on May 31, 2022, as Appl. No. 17/829,282.
Prior Publication US 2023/0384809 A1, Nov. 30, 2023
Int. Cl. G05F 1/46 (2006.01)
CPC G05F 1/462 (2013.01) [G05F 1/468 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A voltage regulating circuit, comprising:
a low-dropout regulator, configured to provide a driving voltage to drive a loading circuit and receive a first detection voltage from a first feedback terminal; and
a reference voltage generating circuit, coupled to the low-dropout regulator, configured to receive a second detection voltage from a second feedback terminal;
wherein a voltage difference between the first feedback terminal and the second feedback terminal is clamped according to the first detection voltage and the second detection voltage.