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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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

Parametrics

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Part number Order 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) Package Group Package size: mm2:W x L (PKG)
LM25066I Order now 1     External     2.9     17     24     PMBus     Current Limiting     Adjustable     Auto Retry
Latch Off    
Always     Catalog     -40 to 125     WQFN | 24     24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
LM25066A Order now 1     External     2.9     17     24     PMBus     Current Limiting     Adjustable     Auto Retry
Latch Off    
Always     Catalog     -40 to 125     WQFN | 24     24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
LM25066IA Order now 1     External     2.9     17     24     PMBus     Current Limiting     Adjustable     Auto Retry
Latch Off    
Always     Catalog     -40 to 125     WQFN | 24     24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
LM5064 Order now 1     External     -10     -80     100     PMBus     Current Limiting     Adjustable     Auto Retry
Latch Off    
Always     Catalog     -40 to 125     HTSSOP | 28     28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)    
LM5066 Order now 1     External     10     80     100     PMBus     Current Limiting     Adjustable     Auto Retry
Latch Off    
Always     Catalog     -40 to 125     HTSSOP | 28     28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)    
LM5066I Order now 1     External     10     80     100     PMBus     Current Limiting     Adjustable