Dual Wide Range Power Monitor

The LTC2992 is a rail-to-rail system monitor that measures current, voltage, and power of two supplies. It features an operating range of 2.7V to 100V and includes a shunt regulator for supplies above 100V. The voltage measurement range of 0V to 100V is independent of the input supply. Two ADCs simultaneously measure each supply’s current. A third ADC monitors the input voltages and four auxiliary external voltages. Each supply’s current and power is added for total system consumption. Minimum and maximum values are stored and an overrange alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I2C interface. Shutdown mode reduces current consumption to 25μA typically.

The LTC2992 I2C interface includes separate data input and output pins for use with standard or opto-isolated I2C connections. The LTC2992-1 has an inverted data output for use with inverting opto-isolator configurations.

Applications

* Telecom Infrastructure

* Industrial Equipment

* Automotive

* Computer Systems and Servers

* Rail-to-Rail Input Range: 0V to 100V

* Wide Input Supply Range: 2.7V to 100V

* Measures Current, Voltage, and Power

* Shunt Regulator for Supplies >100V

* 8-/12-Bit ADCs with Less Than ±0.3% Total Unadjusted Error

* Four General Purpose Inputs/Outputs Configurable as ADC Inputs

* Continuous Scan and Snapshot Modes