DESCRIPTION

· The LM25056A integrates high-performance analog and digital technology with a PMBus™ compliant SMBus™/I2C interface for accurate measurement of electrical system operating conditions.

· It continuously supplies real-time power, voltage, current, and temperature data to the system management host via the SMBus interface.

· Features a black box function to capture and store telemetry data and device status in the event of a warning or fault.

FEATURES

· Input voltage range: 3V to 17V.

· I2C/SMBus interface with PMBus compliant command structure.

· Remote temperature sensing with programmable warning and shutdown thresholds.

· Real-time monitoring of VIN, IIN, PIN, VAUX with 12-bit resolution and 1kHz sampling rate.

· Current measurement error: ±0.5% from +10°C to +85°C.

· Voltage measurement error: ±1.0% from +10°C to +85°C.

· Power measurement error: ±1.5% from +10°C to +85°C.

· True input power measurement using simultaneous sampling of VIN and IIN.

· Averaging of VIN, IIN, PIN, and VAUX over programmable intervals ranging from 0.001 to 4 seconds.

· User programmable WARN and FAULT thresholds with SMBus notification.

· Full-featured application development software.

· WQFN-24 package.

APPLICATIONS

· Server backplane systems.

· Base station power distribution systems.

· Subsystem power measurement.