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Product details

Parameters

FET External Vin (Min) (V) 2.9 Vin (Max) (V) 17 Vabsmax_cont (V) 24 Current limit (Min) (A) 0.01 Current limit (Max) (A) 500 Overcurrent response Current Limiting Current limit type Adjustable Fault response Auto Retry, Latch Off UL recognition open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

WQFN (NHZ) 24 20 mm² 5 x 4 open-in-new Find other eFuses & hot swap controllers

Features

  • Fully Node Manager 2.0 and 2.5 Compliant with I2C/SMBus interface and PMBus™ compliant command structure
  • Input voltage range: 2.9V to 17V
  • Programmable 25mV or 46mV current limit threshold
  • Read_EIN accurately measures true input power via simultaneous sampling
  • Configurable circuit breaker protection for hard shorts
  • Configurable under- and over-voltage lockouts with hysteresis
  • Real time monitoring of VIN, VOUT, IIN, PIN, VAUX with 12-bit resolution and 1 kHz sampling rate
  • Current measurement accuracy: ±1% (LM25066IA) and Power measurement accuracy: ±2.0% (LM25066IA) over temperature
  • 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
  • Blackbox capture of telemetry measurements and device status triggered by WARN or FAULT condition
  • 24-lead WQFN package

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Description

While the LM25066I/A is functionally similar to the LM25066/A, the LM25066I/A is fully compliant to Intel Node Manager 2.0, 2.5 and adds the READ_EIN energy accumulator feature. The LM25066I/A combines a high-performance hot-swap controller with a PMBus 1.2 compliant SMBus/I2C interface to accurately measure, control and protect the electrical operating conditions of critical systems. The LM25066I/A continuously supplies real-time power, voltage, current, temperature, and fault data to the system management host via the SMBus interface.

The LM25066I/A control block includes a unique hot-swap architecture that provides current and power limiting to protect sensitive circuitry even during the most stressful conditions. A fast-acting circuit breaker prevents damage in the event of a short circuit on the output. The input under-voltage, over-voltage hysteresis, insertion delay time and fault detection time are all configurable. A temperature monitoring block on the LM25066I/A interfaces with a low-cost external diode for continuous temperature assessment of the external MOSFET or other thermal sensitive components. The POWER GOOD output provides a fast alert when the input and/or output voltages are outside their programmed range. Accurate power readings are accomplished by using the READ_EIN command. 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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet LM25066I/LM25066A Intel Node Mgr Compliant Sys Pwr Mgmt and Protectn IC datasheet (Rev. C) Mar. 06, 2013
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016
Application note Handling System Transients in Hot Swap Applications May 08, 2015
Application note Robust Hot Swap Design (Rev. A) Apr. 08, 2015

Design & development

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

Software development

GUI FOR EVALUATION MODULE (EVM) Download
SLVC572.ZIP (14513 KB)
SUPPORT SOFTWARE Download
SNVU310G.ZIP (720 KB)

Design tools & simulation

SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP11399 PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
WQFN (NHZ) 24 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Ongoing reliability monitoring

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