Product details


FET External Vin (Min) (V) -80 Vin (Max) (V) -10 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


  • Input Voltage Range: -10V to -80V
  • Programmable 26 mV or 50 mV Current Limit Threshold with Power Limiting (MOSFET Power Dissipation Limiting)
  • Real Time Monitoring of VIN, VOUT, IIN, PIN, VAUX with 12-Bit Resolution and 1 kHz Sampling Rate
  • Configurable Circuit Breaker Protection for Hard Shorts
  • Configurable Under-Voltage and Over-Voltage Protection
  • Remote Temperature Sensing with Programmable Warning and Shutdown Thresholds
  • Detection and Notification of Damaged MOSFET Condition
  • Power Measurement Accuracy: ±4.5% Over Temperature
  • True Input Power Averages Dynamic Power Readings
  • Averaging of VIN, IIN, PIN, and VOUT Over Programmable Interval Ranging from 0.001 to 4 Seconds
  • Programmable WARN and FAULT Thresholds with SMBA Notification
  • Black Box Capture of Telemetry Measurements and Device Status Triggered by WARN or FAULT Condition
  • I2C/SMBus Interface and PMBus Compliant Command Structure
  • Full Featured Application Development Software
  • HTSSOP-28 Package
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The LM5064 combines a high performance hot swap controller with a PMBusTM compliant SMBus/I2C interface to accurately measure, protect and control the electrical operating conditions of systems connected to a backplane power bus. The LM5064 continuously supplies real-time power, voltage, current, temperature and fault data to the system management host via the SMBus interface.

The LM5064 control block includes a unique hot swap architecture that provides current and power limiting to protect sensitive circuitry during insertion of boards into a live system backplane, or any other "hot" power source. A fast acting circuit breaker prevents damage in the event of a short circuit on the output. The input under-voltage and over-voltage levels and hysteresis are configurable, as well as the insertion delay time and fault detection time. A temperature monitoring block on the LM5064 interfaces with a low-cost external diode for monitoring the temperature of the external MOSFET or other thermally sensitive components. The PGD output provides a fast indicator when the input and/or output voltages are outside their programmed ranges.

The LM5064 monitoring circuit computes both the real-time and average values of subsystem operating parameters (VIN, IIN, PIN, VOUT) as well as the peak power. Accurate power averaging is accomplished by averaging the product of the input voltage and current. A black box (Telemetry/Fault Snapshot) function captures and stores telemetry data and device status in the event of a warning or a fault.

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Technical documentation

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Type Title Date
* Data sheet LM5064 Negative Voltage System Pwr Mgmt & Protection IC with PMBus datasheet (Rev. E) Feb. 20, 2013
User guide AN-2143 LM5064 Evaluation Kit (Rev. B) Jan. 06, 2020
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
Selection guide Hot Swap Selection Tool Jul. 28, 2015
Application note Robust Hot Swap Design (Rev. A) Apr. 08, 2015

Design & development

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Hardware development

document-generic User guide

The LM5064EVK evaluation module provides the power design engineer with a fully functional intelligent monitoring and protection controller board designed for negative voltage systems. This application note describes the various functions of the board, how to test and evaluate it, and how to use the (...)

Software development

SLVC572.ZIP (14513 KB)

Design tools & simulation

SNVM435B.ZIP (77 KB) - PSpice Model
SNVM461.ZIP (46 KB) - TINA-TI Spice Model
SNVM462.TSC (348 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
  • (...)
SLVC556C.ZIP (833 KB)

CAD/CAE symbols

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HTSSOP (PWP) 28 View options

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