LT4200

RECOMMENDED FOR NEW DESIGNS

50A Hot Swap E-Fuse with Guaranteed SOA

Data Sheet (Rev. 0) Product Selection Table
Viewing:

Overview

  • Allows Safe Board Insertion into Live Backplane
  • Wide Operating Voltage Range: 2.9V to 15V
  • Guaranteed Safe Operating Area: 7.5W√s
  • 1.2mΩ MOSFET with Current Sense Element
  • ±4% Current Monitor Output
  • Adjustable Current Limit Threshold
  • Temperature Monitor Output
  • Overtemperature Protection
  • Adjustable Current Limit Timer Before Fault
  • Power Good and Fault Outputs
  • Adjustable Inrush Current Control
  • ±2.5% Accurate Undervoltage and Overvoltage Protection
  • Available in a 36-Pin (5mm × 8mm) QFN Package

The LT4200 is an integrated solution for hot swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a hot swap controller, power MOSFET and current sense resistor into a single package for small form-factor applications. The MOSFET safe operating area is production tested and guaranteed for the stresses in hot swap applications.

The LT4200 allows 50A of continuous operation at up to 85°C ambient temperature. It provides separate inrush current control and a ±12% accurate 57A current limit with output dependent foldback. The current limit threshold can be adjusted dynamically using the ISET pin. Additional features include a current monitor output for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage and power good monitoring are also provided.

APPLICATIONS

  • High Availability Servers
  • Solid State Drives
LT4200
50A Hot Swap E-Fuse with Guaranteed SOA
LT4200 Application Circuit LT4200 Performance Graph LT4200 Pin Configuration
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

User Guide 2

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LT4200
LTspice

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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
EVAL-LT4200

Evaluating the LT4200 12 V, 100 A Hot Swap E-Fuse

Buy Now View Details

Product Details

The EVAL-LT4200-AZ circuit board enables evaluation of two parallel LT4200 50 A hot swap E-fuses in a 100 A application. The LT4200 protects the backplane supply from glitches and sparks by controlling the inrush current during hot plug. During an output overload, the LT4200 shuts off after a delay to protect the internal power MOSFET and the backplane supply. The EVAL-LT4200-AZ includes resistive dividers for undervoltage and overvoltage protection and output power good. Turrets are provided for monitoring current, power good, fault status, and input and output voltages. Several test points allow probing of other circuit nodes. Design files for this circuit board are available at the Analog Devices, Inc. website.

eval board
schematic 4
schematic 5
schematic 6
schematic 7
DC3024A

LT4200 | 12V, 50A Hot Swap E-Fuse

Buy Now View Details

Product Details

Demonstration circuit 3024A showcases the LT4200 50A hot swap E-fuse with guaranteed SOA. Included on the board are input voltage dividers for undervoltage and overvoltage protection, LEDs to indicate input voltage, output voltage, fault and power bad conditions, and jumpers to enable auto retry and to select circuit breaker delay. Turrets are provided for monitoring input voltage, output voltage, output status, and most of the pins on the LT4200.
EVAL-LT4200
Evaluating the LT4200 12 V, 100 A Hot Swap E-Fuse
LT4200 Evaluation Board Photo Angle LT4200 Evaluation Board Photo Top LT4200 Evaluation Board Photo Bottom
DC3024A
LT4200 | 12V, 50A Hot Swap E-Fuse
DC3024A Evaluation Board DC3024A Evaluation Board - Top View DC3024A Evaluation Board - Bottom View DC3024A - Measurement Equipment Setup

Latest Discussions

31 Weeks Ago
Tantalum Decoupling Capacitor Optimization for LT4200RUHG#TRPBF in 3U VPX SBC Design
2 Years Ago
Using LT4200 Parallel Design
View related discussion on EngineerZone®

Recently Viewed