LM25066I System Power Management and Protection IC with PMBus | TI.com

LM25066I (ACTIVE)

System Power Management and Protection IC with PMBus

 

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.

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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Parametrics Compare all products in eFuses & hot swap controllers

 
Number of Channels (#)
FET
Vin (Min) (V)
Vin (Max) (V)
Vabsmax_cont (V)
Features
Overcurrent Response
Current limit type
Fault Response
Current limit function enabled
Rating
Operating Temperature Range (C)
Pin/Package
LM25066I LM25066A LM25066IA LM5064 LM5066 LM5066I
1     1     1     1     1     1    
External     External     External     External     External     External    
2.9     2.9     2.9     -10     10     10    
17     17     17     -80     80     80    
24     24     24     100     100     100    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
Supports Telemetry Data Storage    
Current Limiting     Current Limiting     Current Limiting     Current Limiting     Current Limiting     Current Limiting    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
Always     Always     Always     Always     Always     Always    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
24WQFN     24WQFN     24WQFN     28HTSSOP     28HTSSOP     28HTSSOP    

Design tool

WEBENCH® Designer LM25066I

  V in Lower V in Upper
2.90 ≤  V  V ≤ 17.00
Output Current Limit  Amps
Load Capacitance  uF
UVLO V
OVLO V
Ambient Temperature  °C ≤ 100°C