LT1641
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LT1641

Positive High Voltage Hot Swap Controller

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LTspice LT1641 - Hot Swap Controllers Download 3.28 KB
Part Models 4
1ku List Price Starting From $3.40
Features
  • Allows Safe Board Insertion and Removal from a Live Backplane
  • Controls Supply Voltage from 9V to 80V
  • Programmable Analog Foldback Current Limiting
  • High Side Drive for an External N-Channel
  • Automatic Retry Capability
  • User Programmable Supply Voltage Power-Up Rate
  • Undervoltage Lockout
  • Overvoltage Protection
  • Available in 8-Lead SO Package
Additional Details
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The LT1641 is an 8-pin Hot Swap™ controller that allows a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, the board supply voltage can be ramped up at a programmable rate. A high side switch driver controls an N-channel gate for supply voltages ranging from 9V to 80V.

The chip features a programmable analog foldback current limit circuit. If the chip remains in current limit for more than a programmable time, the N-channel pass transistor turns off and is optionally set to automatically restart after a time-out delay.

The PWRGD output indicates when the output voltage, sensed by the FB pin, is within tolerance. The ON pin provides programmable undervoltage lockout.

The LT1641-1/LT1641-2 are recommended for new designs.

The LT1641 is available in the 8-lead SO package.

Applications

  • Hot Board Insertion
  • Electronic Circuit Breaker
  • Industrial High Side Switch/Circuit Breaker
  • 24V/48V Industrial/Alarm Systems
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LTspice LT1641 - Hot Swap Controllers Download 3.28 KB
Part Models 4
1ku List Price Starting From $3.40
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LT1641

Documentation

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Data Sheet

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UPDATED 08/23/2007
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LT1641: Positive High Voltage Hot Swap Controller Data Sheet

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Reliability Data

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UPDATED 03/22/2018
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R375 Reliability Data redirect icon

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Design Note

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UPDATED 03/01/2000
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Design Note 226: A 24V/48V Hot Swap Controller redirect icon

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UPDATED 02/01/2001
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48V Hot Swap Circuit Blocks Reverse Battery Voltage redirect icon

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UPDATED 08/01/2004
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Versatile 80V Hot Swap Controllers Drive Large MOSFETs; Improve Accuracy and Foldback Current Limiting redirect icon

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Documentation

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
LT1641CS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
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LT1641CS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
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LT1641IS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
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LT1641IS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
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Oct 12, 2022

- 22_0254

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

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Jun 11, 2021

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Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

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PCN

Oct 12, 2022

- 22_0254

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1641CS8#PBF

PRODUCTION

LT1641CS8#TRPBF

PRODUCTION

LT1641IS8#PBF

PRODUCTION

LT1641IS8#TRPBF

PRODUCTION

pdf

PCN22_0254_Form

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xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Jun 11, 2021

- 21_0060

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1641CS8#PBF

PRODUCTION

LT1641CS8#TRPBF

PRODUCTION

LT1641IS8#PBF

PRODUCTION

LT1641IS8#TRPBF

PRODUCTION

pdf

PCN21_0060_Form

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xls

Material_Report

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xlsm

Delta Qualification Matrix

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Software & Part Ecosystem

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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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LT1641 - Hot Swap Controllers Download

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