High-Efficiency Reg has Low Drop-Out Voltage (Rev. B)

Texas Instruments

Published Date: 04/23/2013

Description

Conventional regulators have a high drop-out voltage that is a function of the total output current.However with just a regulator chip an external transistor and a few passive components this designforms a high output current regulator with a limited input voltage and high efficiency. The circuit presentedhas a drop-out of 0.7V at 5A load current and 1.3V at a current level of as high as

Parts

Part Number Name Companion Part
LM2931AT-5.0 LM2931AT-5.0 Buy Datasheet
LM2931AZ-5.0/LFT4 LM2931AZ-5.0/LFT4 Buy Datasheet
LM2931CM/NOPB LM2931CM/NOPB Buy Datasheet
LM2931CMX LM2931CMX Buy Datasheet
LM2931CMX/NOPB LM2931CMX/NOPB Buy Datasheet
LM2931CS LM2931CS Buy Datasheet
LM2931M-5.0 LM2931M-5.0 Buy Datasheet
LM2931M-5.0/NOPB LM2931M-5.0/NOPB Buy Datasheet
LM2931T-5.0 LM2931T-5.0 Buy Datasheet
LM2931Z-5.0/LFT1 LM2931Z-5.0/LFT1 Buy Datasheet
LM317LCD LM317LCD Buy Datasheet
LM317LCLPRE3 LM317LCLPRE3 Buy Datasheet
LM317LCPK LM317LCPK Buy Datasheet
LM317LCPKG3 LM317LCPKG3 Buy Datasheet
LM317LCPW LM317LCPW Buy Datasheet
LM317LCPWE4 LM317LCPWE4 Buy Datasheet
LM317LCPWR LM317LCPWR Buy Datasheet
LM317LCPWRE4 LM317LCPWRE4 Buy Datasheet
LM317LCPWRG4 LM317LCPWRG4 Buy Datasheet
LM317LID LM317LID Buy Datasheet
LM317LIDR LM317LIDR Buy Datasheet
LM317LILPR LM317LILPR Buy Datasheet
LM317LIPKG3 LM317LIPKG3 Buy Datasheet
LM317LIPW LM317LIPW Buy Datasheet
LM317MDCY LM317MDCY Buy Datasheet
LM317MKTPR LM317MKTPR Buy Datasheet
LM317MKVURG3 LM317MKVURG3 Buy Datasheet
LM337KC LM337KC Buy Datasheet
LM337KTPRG3 LM337KTPRG3 Buy Datasheet
LM337KTTR LM337KTTR Buy Datasheet
LM337KTTRG3 LM337KTTRG3 Buy Datasheet
LM337Y LM337Y Buy Datasheet