Design of programmable, low power, low dropout voltage regulators for portable applications

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Title: Design of programmable, low power, low dropout voltage regulators for portable applications
Author: Islas Ohlmaier, Abraham
Abstract: As portable electronics constantly find their way into the hands of eager consumers , the demands placed on these products and their circuits are ever increasing . More features and more performance are continuously demanded by consumers . This feature -driven market has brought with it several constraints on the type of circuits utilized in developing these portable devices . Cell -Phones , PDA's , MP3 players and various other portable electronics require different voltage levels to power different architectures that realize the many features within the device . This work demonstrates a technique to design Programmable Low Power Low Dropout Voltage Regulators (LDO ) . The LDO proposed in this research utilizes a fast -transient feedback loop in order to improve transient response and guarantee stability in all the programmable output levels . Specifically , the main parameters to be improved are stability over the entire load current range , reduced overshoot and undershoot variations in transient response , reduction of LDO deflection voltage , minimization of standby current and low voltage (Vin = 1 .2V ) operation .
URI: http : / /hdl .handle .net /1969 .1 /4689
Date: 2007-04-25

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Design of programmable, low power, low dropout voltage regulators for portable applications. Available electronically from http : / /hdl .handle .net /1969 .1 /4689 .

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