Techniques for deriving 3.3V from 5V supplies
Mitchell Lee
Abstract
Techniques for deriving 3.3V from 5V supplies are discussed. The use of linear regulators such as the LT1129-3.3 and synchronous buck regulators such as the LTC1148-3.3 are described.
Keywords
Linear regulators
LT1129-3.3
Synchronous regulators
LTC1148-3.3
Microprocessor chip sets and logic families that operate from 3.3V supplies are gaining acceptance in both desktop and portable computers. Computing rates and, in most cases, energy consumed by these circuits show a strong improvement over 5V technology. The main power supply in most systems is still 5V, necessitating a local 5V to 3.3V regulator.
Linear regulators are viable solutions at lower (IO ≤ 1A) ...
Get Analog Circuit Design Volume Three now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
