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LM25066I

ACTIVE

2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager

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Data sheet

LM25066I

ACTIVE
Data sheet Order now

Product details

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 Circuit breaker, current limiting Fault response Auto-retry, Latch-off Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, PMBus, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Short circuit protection, Thermal shutdown
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 Circuit breaker, current limiting Fault response Auto-retry, Latch-off Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, PMBus, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Short circuit protection, Thermal shutdown
WQFN (NHZ) 24 20 mm² 5 x 4
  • 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

All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners.

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.

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

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Type Title Date
* Data sheet LM25066I/LM25066A Intel Node Mgr Compliant Sys Pwr Mgmt and Protectn IC datasheet (Rev. C) 06 Mar 2013
Application note Basics of Power Switches (Rev. A) PDF | HTML 26 Apr 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Simplify digital hot swap design using the PI-Commander GUI PDF | HTML 06 Jun 2016
Application note Handling System Transients in Hot Swap Applications 08 May 2015
Application note Robust Hot Swap Design (Rev. A) 08 Apr 2015
User guide AN-2293 LM25066I/A Node Manager Compliant Evaluation Board (Rev. A) 06 May 2013

Design & development

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

GUI for evaluation module (EVM)

PMBUSMGRGUI-SW — LM25066, LM5066, LM5064, LM25056 PMBus Manager GUI

Companion GUI for evaluation boards supporting: LM25066, LM5066, LM5064 Hot Swap + telemetry devices and the LM25056 telemetry-only device

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM25066 — 2.9-V to 17-V hot swap controller with PMBus LM25066I — 2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager LM5064 — -10-V to -80-V hot swap controller with PMBus LM5066 — 10-V to 80-V hot swap controller with current, -Voltage and power monitoring and PMBus
Digital power monitors
LM25056 — 3 to 17V, 12-bit, pmbus output current/voltage/power/temperature monitor
Hardware development
Evaluation board
LM5066EVK — LM5066 Evaluation Kit
Download
GUI for evaluation module (EVM)

SLVC572 — PI-Commander EVM GUI

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM25066 — 2.9-V to 17-V hot swap controller with PMBus LM25066A — 2.9-V to 17-V hot swap controller with I2C and PMBus with increased monitoring accuracy LM25066I — 2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager LM25066IA — 2.9-V to 17-V hot swap controller with I2C and PMBus - increased monitoring accuracy and intel node LM5064 — -10-V to -80-V hot swap controller with PMBus LM5066 — 10-V to 80-V hot swap controller with current, -Voltage and power monitoring and PMBus LM5066I — 10-V to 80-V hot swap controller with improved current, voltage and power monitoring accuracy
Power sourcing equipment
TPS23861 — 2-pair, type-2, 4-channel PoE PSE with autonomous mode
Hardware development
Evaluation board
LM5056EVM — LM5056 High Voltage System Power Management IC Evaluation Module TPS23861EVM-612 — TPS23861EVM-612 Evaluation Module for Quad IEEE 802.3at PoE PSE Controller
Download
Support software

SNVU310 — LM25066 Design Calculator

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM25066 — 2.9-V to 17-V hot swap controller with PMBus LM25066A — 2.9-V to 17-V hot swap controller with I2C and PMBus with increased monitoring accuracy LM25066I — 2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager LM25066IA — 2.9-V to 17-V hot swap controller with I2C and PMBus - increased monitoring accuracy and intel node
Download
Calculation tool

SNVR505 — LM25066 Design Calculator With FET Recommendation

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM25066 — 2.9-V to 17-V hot swap controller with PMBus LM25066A — 2.9-V to 17-V hot swap controller with I2C and PMBus with increased monitoring accuracy LM25066I — 2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager LM25066IA — 2.9-V to 17-V hot swap controller with I2C and PMBus - increased monitoring accuracy and intel node
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Calculation tool

TVS-RECOMMENDATION-CALC — TVS diode recommendation tool

This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
Supported products & hardware

Supported products & hardware

This design resource supports most products in these categories.

Check the product details page to verify support.
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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