LTC2922
Info : RECOMMENDED FOR NEW DESIGNS
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LTC2922

Power Supply Tracker with Input Monitors

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 12
1ku List Price Starting From $4.13
Features
  • Tracks Multiple Supplies with MOSFET Switches
  • Monitors 5 Input Voltages Including VCC
  • Guaranteed Threshold Accuracy: ±1% at 0.5V
  • Automatic Remote Sense Switching
  • Adjustable Supply Ramp Rate
  • Overvoltage Monitor
  • Adjustable Electronic Circuit Breaker
  • Adjustable Power-Good Delay
  • Available for VCC Supply Voltages of 5V, 3.3V and 2.5V
  • Available in 16-Pin Narrow SSOP (LTC2921 Series) and 20-Pin TSSOP (LTC2922 Series)
Additional Details
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The LTC2921 and LTC2922 monitor up to five supplies and force them to track on power-up in multiple supply systems. Using external N-channel pass transistors, the supplies can be ramped up at an adjustable rate. Automatic remote sense switching allows the DC/DC converters to compensate for series voltage drops in the wiring. An incorrect level on one or more of the supplies triggers disconnect of all supplies. Tight 1% accuracy and glitch immunity on the low 0.5V monitoring level ensure no false error disconnects.

The LTC2921 and LTC2922 each feature an adjustable electronic circuit breaker to protect the VCC supply against short circuits. Capacitance at the TIMER pin programs the delays in the monitoring sequence.

The LTC2921 includes three remote sense switches in a 16-pin narrow SSOP package, while the LTC2922 includes five remote sense switches in a 20-pin TSSOP package. Both parts are available for VCC supply voltages of 5V, 3.3V, and 2.5V.

Applications

  • Desktop Computers
  • Plug-In Cards
  • Telecom Infrastructure
  • Supply Sequencing
  • Instruments
Part Models 12
1ku List Price Starting From $4.13

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2922CF#PBF
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LTC2922CF#TRPBF
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LTC2922CF-2.5#PBF
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LTC2922CF-2.5#TRPBF
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LTC2922CF-3.3#PBF
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LTC2922CF-3.3#TRPBF
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LTC2922IF#PBF
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LTC2922IF#TRPBF
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LTC2922IF-2.5#PBF
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LTC2922IF-2.5#TRPBF
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LTC2922IF-3.3#PBF
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LTC2922IF-3.3#TRPBF
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Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LTC2922CF-3.3#PBF

PRODUCTION

LTC2922CF-3.3#TRPBF

PRODUCTION

LTC2922IF-3.3#PBF

PRODUCTION

LTC2922IF-3.3#TRPBF

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LTC2922CF-3.3#PBF

PRODUCTION

LTC2922CF-3.3#TRPBF

PRODUCTION

LTC2922IF-3.3#PBF

PRODUCTION

LTC2922IF-3.3#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

reference details image

DC740A-B

LTC2922IF-3.3 | Tracker/Sequencer Demo Board, VCC = 3.3V

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DC740A-C

LTC2922IF-2.5 | Tracker/Sequencer Demo Board, VCC = 2.5V

reference details image

DC740A-A

LTC2922IF | Tracker/Sequencer Demo Board, VCC = 5V

Tools & Simulations

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.

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