Monitor, Control & Protection
Analog Devices’ monitor, control, and protection family offers solutions for the analog and digital power management functions demanded by high performance systems. Monitoring functions include voltage supervision for reset generation, as well as ADC-based digital measurements of voltage, current, charge, power, energy, and temperature. For power control, devices can turn on/off power supply rails and also sequence, track, trim, and margin them with precision. Surge stoppers, hot swap, and ideal diode controllers protect against abnormal voltages and currents. Robust power over Ethernet (PoE) controllers allow up to 90 W of power to be managed and transferred between power sourcing equipment (PSE) and powered devices over low cost Ethernet cables. Our portfolio incorporates high accuracy, offers varying levels of functional integration, and features analog or digital configuration.
Subcategories
- Cable Drop Compensation
- Digital Power System Management
- Energy Monitor
- High Side Switches & MOSFET Drivers
- Hot Swap Controllers
- Ideal Diode Bridge
- Isolated Gate Drivers
- Power Monitors
- Power-over-Ethernet (PoE) Interface Controllers
- PowerPath, Ideal Diodes & Load Switches
- Pushbutton Controllers
- Sequencers, Trackers, & Margining Controllers
- Supervisory Circuits
- Surge Stopper, Overvoltage & Overcurrent Protection
- Thermoelectric Cooler Controller
Latest Resources
Product Selector Card
- Power System Manager and Super Sequencer Selection Guide PDF
- Product Selection Guide PDF
- High Voltage Non-Isolated Devices PDF
- Digital Isolator Product Selection Guide PDF
- 5kVRMS Isolated Switch Controller with Telemetry PDF
- 60V Battery Gas Gauge PDF
- Multi-Sensor High Accuracy Digital Temperature Measurement Systems PDF
- Precision High Side Current Sense Amplifiers PDF
- High Performance Low Dropout Linear Regulators (LDOs) PDF
- SnPb (Tin-Lead) BGA Packages μModule Power Products PDF
- Configurable Wake-Up Timer with Pushbutton Control PDF
- Programmable Six Supply Sequencer and Supervisor PDF
- Ideal Diode Bridge PDF
- Voltage Monitors & Supervisors Quick Guide PDF
- Power over Ethernet Solutions PDF
- Digital Power System Management PDF
- μModule Power Products PDF
- Power and Thermal Monitoring PDF
- Energy Meter with Integrated Sense Resistor PDF
- Military Plastic Products PDF
- Kilowatt Hot Swap/Circuit Breaker with Telemetry PDF
- 100V Micropower Voltage Monitor PDF
- Programmable Hex Voltage Supervisors PDF
- PMBus Power System Managers PDF
- Very Wide Range I2C Energy Monitor PDF
- Micropower Hot Swap Controller PDF
- 20V Battery Gas Gauge PDF
- LT4321 - PoE Ideal Diode Bridge Controller PDF
- PMBus DC/DC Converters with Power System Management PDF
- Wide Range I2C Power Monitor PDF
- Temperature Monitors PDF
LT Journal
- MOSFET Safe Operating Area and Hot Swap Circuits PDF
- Making Accurate Temperature Measurements with Devices with Different Ideality Factors PDF
- Robust Industrial Sensing with the Temperature-to-Bits Family PDF
- Dual Input, 42V, 2.5A Synchronous Buck Converter Features Seamless, Automatic Transition Between Two Input Power Sources and Meets Stringent CISPR 25 Class 5 EMI Limits PDF
- Low Quiescent Current Surge Stopper: Robust Automotive Supply Protection for ISO 7637-2 and ISO 16750-2 Compliance PDF
- Low IQ Ideal Diode Controller with Reverse Input Protection for Automotive and Telecom Power Solutions PDF
- Avoid Debugging Cycles in Power Management for FPGA, GPU and ASIC Systems PDF
- Measuring 18 2-Wire RTDs with the LTC2983 High Accuracy Digital Temperature Measurement System PDF
- Using a Current Sharing Controller when the Sum Current of Both Supplies is Required to Support the Load PDF
- Power Supply Sequencing Simplified PDF
- Easy Balanced Load Sharing for Three or Four Supplies, Even with Unequal Supply Voltages PDF
- 1.5A, Negative Regulator Expands Family of Current-Reference Linear Regulators PDF
- The Evolution of High Voltage Digital Power System Management PDF
- Simplify Small Solar Systems with Hysteretic Controller PDF
- 12V/100A Hot Swap Design for Server Farms PDF
- 2A_at_95%_Efficiency_from_Dual_Inputs_c3d5535d-9739-4d4a-a408-801a6609994d> 18V Buck-Boost Converter with Intelligent PowerPath Control Delivers >2A at 95% Efficiency from Dual Inputs PDF
- I2C Programmable Multichannel Voltage Supervisors with EEPROM PDF
- Analysis of Hot Swap Circuits with Foldback Current Limit PDF
- Temperature-to-Bits: One IC for All Sensor Types, 0.1°C Conformity PDF
- Compensate for Wire Drop to a Remote Load PDF
- High Step-Down Ratio Controller Combines Digital Power System Management with Sub-Milliohm DCR Sensing and Accurate PolyPhase Load Sharing PDF
- High Performance Portable DC Bench Power Supply: Save Money and Free Up Bench Real Estate by Building Your Own PDF
- Ideal Diode Combines 200V Busses PDF
- High Voltage Surge Stoppers Ease MIL-STD-1275D Compliance by Replacing Bulky Passive Components PDF
- 3mm × 3mm QFN IC Directly Monitors 0V to 80V Supplies: Features I2C Interface, Peak Value Tracking and Runs from Any Supply PDF
- High Accuracy (±1°C) Temperature Sensors Improve System Performance and Reliability PDF
- 4- and 6-Supply Monitors Feature ±1.5% Accuracy and Watchdog Timers for Rails Down to 1.2V PDF
- Mar 2008 - 1.5% Accurate Single-Supply Supervisors Simplify Part Selection and Operate to 125°C PDF
- Mar 2008 - 6-Input Supervisors Offer Accurate Monitoring and 125°C Operation PDF
- Mar 2008 - Voltage and Current Monitoring from 7V to 80V in 3mm × 3mm DFN-10 PDF
- Dec 2003 Hot Swap Controller with Power-Up Timeout Function Simplifies Hot Swapping Boards with Multiple Power Supplies PDF
- May 2001 Ramp Three Supplies with a Supply Monitor and Hot Swap Controller PDF
- Sep 2006 Sequencer-Supervisor Simplifies Design of Multi-Supply Systems PDF
- March 2005 - Flexible Power Supply Sequencing and Monitoring PDF
- Feb 2004 Compact, Versatile, Accurate, 3-State Programmable Power Supply Supervisors PDF
- Feb 2004 Versatile Power Supply Tracking without MOSFETs PDF
- Mar 2002 Delta Sigma Breakthrough: LTC1966 True RMS-to-DC Converter Uses No Diodes, Heaters or Logarithms PDF
Application Notes
- AN170 - Honing the Adjustable Compensation Feature of Power System Management Controllers PDF
- AN168 - Implementing Fast Telemetry with Power System Management Controllers PDF
- AN166 - In Flight Update with Linduino PDF
- Using the LTC2937 A Step-by-Step Guide to Sequencing and Supervision PDF
- AN155 - Fault Log Decoding with Linduino PSM PDF
- AN153 - Linduino for Power System Management PDF
- AN160 - Single-Channel Power Supply Monitor with Remote Temperature Sense PDF
- AN152 - Power System Management Addressing PDF
- AN149 - Modeling and Loop Compensation Design of Switching Mode Power Supplies PDF
- AN145 - Overview of the EEPROM in LTC PSM Devices PDF
- AN142 - New Linear Regulators Solve Old Problems PDF
- AN107 - Extending the Input Voltage Range of PowerPath Circuits for Automotive and Industrial Applications PDF
- AN126 - 2-Wire Virtual Remote Sensing for Voltage Regulators - Clairvoyance Marries Remote Sensing PDF
- AN137 - Accurate Temperature Sensing with an External P-N Junction PDF
- AN135 - Implementing Robust PMBus System Software for the LTC3880 PDF
- AN104 - Load Transient Response Testing for Voltage Regulators PDF
- AN98 - Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 2004 PDF
- AN106 - Instrumentation Circuitry Using RMS-to-DC Converters PDF
- AN90 - Current Sources for Fiber Optic Lasers: A Compendium of Pleasant Current Events PDF
- AN89 - A Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers: Climatic Pampering for Temperamental Lasers PDF
- AN84 - Linear Technology Magazine Circuit Collection, Volume IV PDF
- AN67 - Linear Technology Magazine Circuit Collection, Volume III PDF
- AN66 - Linear Technology Magazine Circuit Collection, Volume II PDF
- AN53 - Micropower High Side MOSFET Drivers PDF
- AN51 - Power Conditioning for Notebook and Palmtop Systems PDF
Technical Articles
- Negative Voltage Ideal Diodes (Diode-OR Controllers)
- 95% Efficient at 2MHz 42V Synchronous Buck
- LTspice: Using Time-Dependent Exponential Sources to Model Transients
- Primer on PowerPath Controllers, Ideal Diodes & Prioritizers
- Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions
- LT8672EMS Demo Board | VIN = -15V to 35V, Up to 5A Output
- High Efficiency Solar MPPT Battery Charger Using LT8611 and AD5245
- LTspice Models of ISO 7637-2 & ISO 16750-2 Transients
- LTspice SOAtherm Support for PCB and Heat Sink Thermal Models
- LTC3723-1 130W Isolated Push-Pull Converter for PoE Applications with 93.5% Peak Efficiency
- I2C Primer: What is I2C? (Part 1)
- A New Era in Space Products - Radiation Tolerant
- 100V Micropower Voltage Monitor Provides Flexible Monitoring of Positive and Negative Rails Simultaneously
- LTC4226 Parallel MOSFETs in Hot Swap Circuits
- Understanding Power Monitor Accuracy
- Three Bucks Plus a Boost Controller Meet the Stringent Requirements of Wide-Range VIN Automotive Applications
- Active Rectifier Controller with Ultrafast Transient Response and Low Power Dissipation
- AN168 - Implementing Fast Telemetry with Power System Management Controllers
- AN170 - Honing the Adjustable Compensation Feature of Power System Management Controllers
- High Accuracy Energy Monitoring Solutions from Linear Technology
Solutions Bulletins & Brochures
Videos
- 1.5A LDO+ Regulator Monitors Current and Temperature
- 2.1A LDO+ Regulator Features Cable Drop Compensation and Monitors Current and Temperature
- MOSFET Failure Protection for Single Output PolyPhase® Converter
- LT4321/LT4275 TechClip - Increased Available PD Power
- LTC2947 Video Product Brief
- Buck-Boost DC/DC Converter with Intelligent PowerPath
- Fast 150V Protected High Side Driver
- Dual Input Prioritizers with Built-In Battery Monitoring
- High Power Hot Swap with Power Sharing and Digital Telemetry
- LTC2956 Video Product Brief
- LTC7860 Video Product Brief
- LTC4233/LTC4234 Video Product Brief
- LTC4282 Video Product Brief
- 30A Power and Energy Monitor with Integrated Sense Resistor
- LT4320 Video Product Brief
- LT4321 Video Product Brief
- Active Rectifier Controller with Reverse Protection
- A Guide to Ordering Custom Programmed Digital Power System Management Devices
- Prioritizers - Video Product Brief
- Surge Stoppers Video Product Brief
- Low Voltage Power Supplies
- Low Iq Surge Stopper for High Reliability Current Sensitive Applications
- Guide To Ordering Custom Programmed EEPROM Devices
- SOAtherm Tutorial
- Four-Channel PMBus Power System Manager with Input Energy Monitoring for Comprehensive Power System Management
Design Notes
- DN572 - Active Rectifier Controller with Ultrafast Transient Response and Low Power Dissipation PDF
- DN554 - 6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management PDF
- DN549 - Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions PDF
- DN1037 - Power Supply Sequencing Simplified PDF
- DN1036 - Using a Current Sharing Controller with Non-Redundant Supplies PDF
- DN1035 - Measuring 18 2-Wire RTDs with the LTC2983 PDF
- DN542 - Dual 9A, Step-Down μModule Regulator with Digital Power System Management PDF
- DN524 - Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power PDF
- DN534 - Surge Stoppers Ease MIL-STD-1275D Compliance PDF
- DN339 - An Autoranging True RMS Converter PDF
- DN288 - RMS-to-DC Conversion Just Got Easy PDF
- DN529 - Control the Voltage of a Remote Load Over Any Length of Copper Wire PDF
- DN350 - Fully Autonomous IEEE 802.3af Power over Ethernet Midspan PSE Requires No Microcontroller PDF
- DN384 - Accurate Power Supply Sequencing Prevents System Damage PDF
- DN527 - 10A μModule Step-Down Regulator with Advanced Input and Load Protection PDF
- DN519 - Active Bridge Rectifiers Reduce Heat Dissipation within PoE Security Cameras PDF
- DN517 - High Performance Single Phase DC/DC Controller with Power System Management PDF
- DN1029 - Tighten Supply Regulation for 2A USB Devices by Dynamically Compensating for Voltage Drops in Wiring and Connectors PDF
- DN510 - System Monitor with Instrumentation-Grade Accuracy Used to Measure Relative Humidity PDF
- DN498 - Supercapacitor-Based Power Backup System Protects Volatile Data in Handhelds when Power Is Lost PDF
- DN497 - Protect Sensitive Circuits from Overvoltage and Reverse Supply Connections PDF
- DN487 - Supercapacitor-Based Power Backup Prevents Data Loss in RAID Systems PDF
- DN485 - Complete Energy Utilization Improves Run Time of a Supercap Ride-Through Application by 40% PDF
- DN452 - Power Monitor for Automotive and Telecom Applications Includes ADC and I2C Interface PDF
- DN421 - An Easy Way to Add Auxiliary Control Functions to Hot Swap Cards PDF
- DN427 - Pushbutton On/Off Controller with Failsafe Voltage Monitoring PDF
- DN372 - Power Supply Tracker Can Also Margin Supplies PDF
- DN408 - Versatile Voltage Monitors Simplify Detection of Overvoltage and Undervoltage Faults PDF
- DN401 - Power Supply Sequencing Made Simple PDF
- DN391 - Pushbutton On/Off Controller Simplifies System Design PDF
- DN389 - Tracking and Sequencing Made Simple with Tiny Point-of-Load Circuit PDF