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Application Notes

• Download
  Using the LTC2937 A Step-by-Step Guide to Sequencing and Supervision
  PDF, 1.2 Mb, File published: Mar 9, 2017
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  Application Note 162
  March 2017
  Using the LTC2937
  A Step-by-Step Guide to Sequencing and Supervision
  Nathan Enger
  Introduction This document is broken into the following sections: A Minimalist Circuit Adding Circuit Features DC/DC
  CONVERTERS LTC2937 2.2ВµF
  0.1ВµF
  3.3k VPWR
  VDD
  WP
  ASEL1
  ASEL2
  ASEL3
  MARGB
  ON
  SPCLK
  SHARE_CLK
  SCL
  SDA
  ALERTB
  GND The LTCВ®2937 is a power supply sequencer and supervisor with features that make it ideal for power supply
  management. It has features that enable seamless cooperation between any number of rails, including timing …

Design Notes

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  Power Supply Sequencing Simplified &mdash DN1037
  PDF, 395 Kb, File published: Dec 4, 2015
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  Power Supply Sequencing Simplified
  Design Note 1037
  Nathan Enger
  Introduction
  Designing a multiple power supply system is challenging. The power supply designer’s workload multiplies
  with each additional supply rail. The designer must
  consider the dynamic environment of coordinated
  power supply sequencing and timing, generating
  power-on reset, monitoring for faults and responding
  appropriately to protect the system. An experienced
  designer recognizes that flexibility is key to successfully navigating the ebb and flow as a project moves
  from prototype to production. The ideal solution
  minimizes the number of hardware and software
  changes during development.
  The ideal multisupply design tool is a single IC that
  resides in a design from beginning to end, requiring no wiring changes through the life cycle of the
  product. It autonomously supervises and sequences
  multiple power rails, cooperating with other ICs to
  seamlessly supervise many power regulators in the
  system, and provides fault and reset management.
  The designer can use powerful PC-based software
  to configure, visualize and debug system behavior in
  real time when connected to an I2C bus. The LTC2937 fits this bill. It is a 6-channel voltage sequencer and high accuracy supervisor with …

Articles

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  Power Supply Sequencing Simplified &mdash LT Journal
  PDF, 628 Kb, File published: Aug 11, 2016
  Extract from the document

  Power Supply Sequencing Simplified
  Nathan Enger The challenges in designing a multiple power supply multiply with each additional
  supply rail. The designer must consider the dynamic environment of coordinated
  power supply sequencing and timing, generating power-on reset, monitoring
  for faults and responding appropriately to protect the system. An experienced
  designer recognizes that flexibility is key to successfully navigating the ebb and
  flow as a project moves from prototype to production. The ideal solution minimizes
  the number of hardware and software changes during development.
  The ideal multisupply design tool is a
  single IC that resides in a design from
  beginning to end, requiring no wiring
  changes through the life cycle of the
  product. It autonomously supervises and
  sequences multiple power rails, cooperating with other ICs to seamlessly supervise
  many power regulators in the system,
  and provides fault and reset management. The designer can use powerful
  PC-based software to configure, visualize and debug system behavior in real
  time when connected to an I2C bus.
  The LTCВ®2937 fits this bill. It is a 6-channel
  voltage sequencer and high accuracy
  supervisor with EEPROM. Each of the six
  channels has two dedicated comparators
  to accurately monitor over-and undervoltage conditions to within В±0.75%. …

Model Line

Manufacturer's Classification

• Monitor, Control and Protection > Supervisory Circuits > Quad or More Supply Monitors
• Monitor, Control and Protection > Sequencers, Trackers, and Margining Controllers
• Monitor, Control and Protection > Sequencers, Trackers, and Margining Controllers > Power Supply Sequencers > Digital Sequencers

Other Names:

LTC2937IUHEPBF, LTC2937IUHE PBF