Transcription of Low Drop-Out (LDO) Linear Regulators: Design ...
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Low Drop-Out (LDO) Linear Regulators: Design ...
1 IEEE Santa Clara Valley (SCV)Solid State Circuits SocietyFebruary 11, 2110 Edgar S nchez-SinencioTI J. Kilby Chair ProfessorAnalog and Mixed-Signal Center, Texas A&M UniversityLow Drop-Out (LDO) Linear regulators : Design Considerations and Trends for High Power-Supply Rejection (PSR)Power Management Why do we need power management? Batteries discharge almost linearly with time. To optimize the charging of batteries to be safe and extend their life. Circuits with reduced power supply that are time dependent operate poorly.
• Solution:LDO with good PSR at higher operating frequencies • Challenges:Low drop‐out voltage, low quiescent current, small area, high PSR across a wide frequency range Switching Vsupply converter LDO Regulator Battery Power Management System Analog / RF / Digital Circuit Blocks Battery Charger 16
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