SLVA342A Datasheet, PDF (5/8 Pages) Texas Instruments – Simple Power Solution Using LDOs

www.ti.com
Features
(1) Use three such LDOs to power up DVDDA, DVDDB, DVDDC (It can either be 1.8 V or 3.3 V)
(2) Rx = 0.499 MΩ, Ry = 1 MΩ for Vout = 1.8 V
(3) Rx = 1.8 MΩ, Ry = 1 MΩ for Vout = 3.3 V
(4) For proper sequencing of output, enable of the LDOs are fed either from 1.2-V output from TPS74701 if
DVDDX is 1.8 V or from 1.8-V output from TPS71718 if DVDDX is 3.3 V.
Figure 2. Optional Circuit for DVDD_A, DVDD_B, and DVDD_C
SLVA342A – June 2009 – Revised May 2010
Simple Power Solution Using LDOs
5
Copyright © 2009–2010, Texas Instruments Incorporated