LTC2923
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LTC2923

Power Supply Tracking Controller

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LTspice LTC2923 - Sequencers, Trackers, and Margining Controllers Download 3.51 KB
Part Models 8
1ku List Price Starting From $3.89
Features
  • Flexible Power Supply Tracking
  • Tracks Both Up and Down
  • Power Supply Sequencing
  • Supply Stability is Not Affected
  • Controls Two Supplies Without Series FETs
  • Controls a Third Supply With a Series FET
  • Adjustable Ramp Rates
  • Electronic Circuit Breaker
  • Available in 10-Lead MS and 12-Lead (4mm × 3mm) DFN Packages
Additional Details
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The LTC2923 provides a simple solution to power supply tracking and sequencing requirements. By selecting a few resistors, the supplies can be configured to ramp-up and ramp-down together or with voltage offsets, time delays or different ramp rates.

By introducing currents into the feedback nodes of two independent switching regulators, the LTC2923 causes their outputs to track without inserting any pass element losses. Because the currents are controlled in an openloop manner, the LTC2923 does not affect the transient response or stability of the supplies. Furthermore, it presents a high impedance when power-up is complete, effectively removing it from the DC/DC circuit.

For systems that require a third supply, one supply can be controlled with a series FET. This optional series FET can also control a supply that does not allow direct access to its feedback resistors (e.g., a power module) or a supply whose output cannot be forced to ground (e.g., a 3-terminal linear regulator). When the FET is used, an electronic circuit breaker provides protection from short-circuit conditions.

Applications

  • VCORE and VI/O Supply Tracking
  • Microprocessor, DSP and FPGA Supplies
  • Servers
  • Communication Systems
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file View Data Sheet
Documentation View All Documentation
LTspice LTC2923 - Sequencers, Trackers, and Margining Controllers Download 3.51 KB
Part Models 8
1ku List Price Starting From $3.89
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LTC2923

Documentation

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Data Sheet

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UPDATED 06/13/2016
English

LTC2923: Power Supply Tracking Controller Data Sheet

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UPDATED 05/19/2011
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LTC2923: 電源トラッキング・コントローラ データシート

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Design Note

1

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UPDATED 10/15/2007
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DN372 - Power Supply Tracker Can Also Margin Supplies redirect icon

73.00K

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User Guide

1

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UPDATED 09/24/2009
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DC732A - Demo Manual redirect icon

289.00K

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Reliability Data

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UPDATED 03/26/2018
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R413 Reliability Data redirect icon

26.34 K

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Technical Articles

6

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UPDATED 11/01/2004
English
Power Supply Tracking for Linear Regulators redirect icon

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UPDATED 11/01/2004
Japanese
リニア・レギュレータの電源トラッキングを実現する redirect icon

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UPDATED 03/01/2006
English
MOSFETs Make Sense for Tracking and Sequencing Power Supplies redirect icon

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UPDATED 12/01/2003
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Low Voltage Wizardry Provides the Ultimate Power-On Reset Circuit redirect icon

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UPDATED 04/01/2010
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Dual 500mA µPower LDO Features Independent 1.8V–20V Inputs and Easy Sequencing in a 4mm × 3mm DFN redirect icon

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UPDATED 02/01/2004
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Versatile Power Supply Tracking without MOSFETs redirect icon

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Documentation

Technical Documents 9
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Data Sheet 1

LTC2923: Power Supply Tracking Controller Data Sheet

Reliability Data 1

R413 Reliability Data

User Guide 1

DC732A - Demo Manual

Design Note 1

DN372 - Power Supply Tracker Can Also Margin Supplies

Technical Articles 5

Power Supply Tracking for Linear Regulators
MOSFETs Make Sense for Tracking and Sequencing Power Supplies
Low Voltage Wizardry Provides the Ultimate Power-On Reset Circuit
Dual 500mA µPower LDO Features Independent 1.8V–20V Inputs and Easy Sequencing in a 4mm × 3mm DFN
Versatile Power Supply Tracking without MOSFETs

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2923CDE#PBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923CDE#TRPBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923CMS#PBF 10-Lead MSOP external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923CMS#TRPBF 10-Lead MSOP external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923IDE#PBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923IDE#TRPBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923IMS#PBF 10-Lead MSOP external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC2923IMS#TRPBF 10-Lead MSOP external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Jun 5, 2024

- 24_0004

Epoxy Change from Henkel 8290 to 8290A for MSOP (3)

LTC2923CMS#PBF

PRODUCTION

LTC2923CMS#TRPBF

PRODUCTION

LTC2923IMS#PBF

PRODUCTION

LTC2923IMS#TRPBF

PRODUCTION

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PCN24_0004_Form

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Material_Report

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Qualification Results Summary

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Delta Qualification Matrix

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Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC2923CMS#PBF

PRODUCTION

LTC2923CMS#TRPBF

PRODUCTION

LTC2923IMS#PBF

PRODUCTION

LTC2923IMS#TRPBF

PRODUCTION

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PCN20_0130_Form

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Material_Report

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Product Lifecycle

PCN

Jun 5, 2024

- 24_0004

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP (3)

LTC2923CMS#PBF

PRODUCTION

LTC2923CMS#TRPBF

PRODUCTION

LTC2923IMS#PBF

PRODUCTION

LTC2923IMS#TRPBF

PRODUCTION

pdf

PCN24_0004_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC2923CMS#PBF

PRODUCTION

LTC2923CMS#TRPBF

PRODUCTION

LTC2923IMS#PBF

PRODUCTION

LTC2923IMS#TRPBF

PRODUCTION

pdf

PCN20_0130_Form

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xls

Material_Report

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Software & Part Ecosystem

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Evaluation Kits 1

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Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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LTC2923 - Sequencers, Trackers, and Margining Controllers Download

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