Invention Grant
- Patent Title: Low dropout voltage regulator with high power supply rejection ratio
- Patent Title (中): 低压差稳压器，具有高电源抑制比
-
Application No.: US12268838Application Date: 2008-11-11
-
Publication No.: US07994764B2Publication Date: 2011-08-09
- Inventor: Rastislav Koleno
- Applicant: Rastislav Koleno
- Applicant Address: US AZ Phoenix
- Assignee: Semiconductor Components Industries, LLC
- Current Assignee: Semiconductor Components Industries, LLC
- Current Assignee Address: US AZ Phoenix
- Agent Paul J. Polansky
- Main IPC: G05F1/575
- IPC: G05F1/575
Abstract:
A low dropout voltage regulator includes an error amplifier, a voltage divider, and a voltage reference/amplifier circuit. The error amplifier has first and second input terminals, a power supply terminal for receiving an input voltage, and an output terminal for providing a regulated output voltage. The voltage divider provides a feedback voltage as a predetermined fraction of said regulated output voltage. The voltage reference/amplifier circuit provides a first voltage to said first input terminal of said error amplifier that varies inversely with variations of said feedback voltage, and provides a second voltage to said second input terminal of said error amplifier that varies by substantially the same amount over temperature as variations in said first voltage.
Public/Granted literature
- US20100117609A1 LOW DROPOUT (LDO) VOLTAGE REGULATOR AND METHOD THEREFOR Public/Granted day:2010-05-13
Information query
IPC分类:
