LTC4282
High Current Hot Swap Controller with I2C Compatible Monitoring
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Overview
Features and Benefits
- Allows Safe Board Insertion Into Live Backplane
- 12-/16-Bit ADC with ±0.9% Total Unadjusted Error
- Monitors Current, Voltage, Power and Energy
- Controls Two Parallel N-Channel MOSFETs for SOA Sharing in High Current Applications
- Internal EEPROM for Nonvolatile Configuration
- Wide Operating Voltage Range: 2.9V to 33V
- I2C/SMBus Digital Interface (Coexists with PMBus Devices)
- 12V Gate Drive for Lower MOSFET RDS(ON)
- Programmable Current Limit with 2% Accuracy
- MOSFET Power Limiting with Current Foldback
- Continuously Monitors MOSFET Health
- Stores Minimum and Maximum Measurements
- Alerts When Alarm Thresholds Exceeded
- Input Overvoltage and Undervoltage Protection
- Internal ±5% or External Timebases
- 32-Pin 5mm × 5mm QFN Package
- AEC-Q100 Qualified for Automotive Applications
Product Details
The LTC4282 hot swap controller allows a board to be safely inserted and removed from a live backplane. Using one or more external N-channel pass transistors, board supply voltage and inrush current are ramped up at an adjustable rate. An I2C interface and onboard ADC allows for monitoring of board current, voltage, power, energy and fault status.
The device features analog foldback current limiting and supply monitoring for applications from 2.9V to 33V. Dual 12V gate drive allows high power applications to either share safe operating area across parallel MOSFETs or support a 2-stage start-up that first charges the load capacitance followed by enabling a low on-resistance path to the load.
The LTC4282 is well suited to high power applications because the precise monitoring capability and accurate current limiting reduce the extremes in which both loads and power supplies must safely operate. Non-volatile configuration allows for flexibility in the autonomous generation of alerts and response to faults.
APPLICATIONS
- Enterprise Servers and Data Storage Systems
- Network Routers and Switches
- Base Stations
- Platform Management
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation & Resources
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R547 Reliability Data3/26/2018PDF146 K
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DC2442A - Demo Manual7/18/2017PDF1M
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DC2024A - Demo Manual1/21/2016PDF1M
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High Power Hot Swap Controllers7/30/2020PDF1 M
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Hot Swap Controllers7/13/2017PDF778 K
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Kilowatt Hot Swap/Circuit Breaker with Telemetry9/15/2015PDF447K
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Monitoring & Switching Power in Automobiles8/9/2016PDF7M
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LTC4282 Video Product Brief10/15/2018 -
High Power Hot Swap with Power Sharing and Digital Telemetry10/15/2018
Tools & Simulations
LTspice
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Models for the following parts are available in LTspice:
LTC4282
Linduino
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Design Tools
Design Resources
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PCN-PDN Information
Support & Discussions
LTC4282 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.