TIDA-00387

Dynamic Voltage Scaling with a Dual LDO

TIDA-00387

Design files

Overview

This application solution details how a dual-channel LDO may be used to provide a dynamic voltage scaling output. This functionality is of particular interest when powering microcontrollers that have a wide operating voltage range: it is advantageous, when possible, to lower the operating voltage of the MCU in order to achieve lower power consumption.

Features
  • Dynamically scales output voltage quickly
  • Low Quiescent Current (< 35uA)
  • Small size (1.5x1.5mm SON)
  • Powers up and down monotonically
  • Responds quickly to load transients
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU631.PDF (588 K)

Reference design overview and verified performance test data

TIDRBY5.PDF (95 K)

Detailed schematic diagram for design layout and components

TIDRBY6.PDF (88 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC781.ZIP (144 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

TLV710200-mA, low-IQ, high-PSRR, dual-channel low-dropout voltage regulator with enable

Data sheet: PDF

Technical documentation

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Type Title Date
Technical article How LDOs contribute to power efficiency PDF | HTML May 13, 2016
Design guide Dynamic Voltage Scaling With a Dual LDO Design Guide Oct. 30, 2014

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