Product details


FET External Vin (Min) (V) 10 Vin (Max) (V) 80 Vabsmax_cont (V) 100 Current limit (Min) (A) 0.01 Current limit (Max) (A) 500 Overcurrent response Current limiting, Circuit breaker Fault response Auto Retry, Latch Off UL recognition open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 9.7 x 4.4 open-in-new Find other eFuses & hot swap controllers


  • 10- to 80-V Operation
  • 100-V Continuous Absolute Max
  • 26 mV (±12%) or 50 mV (±6%) ILIM Threshold
  • Programmable FET SOA Protection
  • Programable UV, OV, tFAULT Thresholds
  • External FET Temperature Sensing
  • Failed FET Detection
  • I2C / SMBus Interface
  • PMBus™ Compliant Command Structure
  • Precision V IN, VOUT, IIN, PIN, VAUX Monitoring
    • V (±2.7%); I (±3%); P (±4.5%)
  • Programable I/V/P Averaging Interval
  • 12-bit ADC with 1-kHz Sampling Rate
  • –40°C < TJ < 125°C Operation
  • Pin-to-Pin Compatible with LM5066I
open-in-new Find other eFuses & hot swap controllers


LM5066 provides robust protection and precision monitoring for 10- to 80-V systems. Programmable UV, OV, ILIMIT, and fast-short circuit protection allow for customized protection for any application. Programmable FET SOA protection sets the maximum power the FET is allowed to dissipate under any condition. The programmable fault timer (tFAULT) is set to avoid nuisance trips, ensure start-up, and limit the duration of over load events.

In addition to circuit protection, the LM5066 supplies real-time power, voltage, current, temperature, and fault data to the system management host through the I2C / SMBus interface. PMBus compliant command structure makes it easy to program the device. Precision telemetry enables intelligent power management functions such as efficiency optimization and early fault detection. LM5066 also supports advanced features such as I/V/P averaging and peak power measurment to improve system diagnostics.

LM5066I is pin-to-pin compatible with the LM5066 and offers improved telemetry accuracy and supports the Read_Ein command to monitor energy.

open-in-new Find other eFuses & hot swap controllers
Similar products you might be interested in
open-in-new Compare products
Same functionality with different pin-out to the compared device.
LM25066 ACTIVE 2.9-V to 17-V hot swap controller with PMBus This product is the 12-V version of this device.
LM5066I ACTIVE 10-V to 80-V hot swap controller with improved current, voltage and power monitoring accuracy This product is a node ,anager compliant, and has higher measurement accuracy.

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet LM5066 10 to 80 V, Hotswap Controller With I/V/P Monitoring and PMBus Interface datasheet (Rev. I) Jan. 26, 2016
E-book 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application note Basics of Power Switches (Rev. A) Apr. 26, 2019
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical article Simplify digital hot swap design using the PI-Commander GUI Jun. 06, 2016
Application note Handling System Transients in Hot Swap Applications May 08, 2015
Application note Robust Hot Swap Design (Rev. A) Apr. 08, 2015
Technical article SLEIGH secrets revealed! Dec. 24, 2013
User guide AN-2160 LM5066 Evaluation Board (Rev. A) Apr. 26, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The LM5066EVK evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM5066 hot-swap controller with PMBUS compliant SMBUS/I2C interface to accurately measure, protect and control the electrical operating conditions of systems connected to a backplane power bus. The EVM (...)



  • LM5066 Evaluation Board
  • USB-PMBus interface board
  • CD for GUI Tool
  • USB cable

Software development

SLVC572.ZIP (14513 KB)

Design tools & simulation

SNVM325A.ZIP (90 KB) - PSpice Model
SNVM400.ZIP (44 KB) - TINA-TI Spice Model
SNVM401.TSC (659 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SNVR507.ZIP (492 KB)
SNVU080C.ZIP (723 KB)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 28 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​