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LTC2992 Datasheet(PDF) 1 Page - Linear Technology |
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LTC2992 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 46 page  LTC2992 1 Rev A For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION Dual Wide Range Power Monitor The LTC®2992 is a rail-to-rail system monitor that mea- sures 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. Mini- mum 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 25A 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. Dual Wide Range Power Monitor ADC Error (GPIO) APPLICATIONS n Rail-to-Rail Input Range: 0V to 100V n Wide Input Supply Range: 2.7V to 100V n Measures Current, Voltage, and Power n Shunt Regulator for Supplies >100V n 8-/12-Bit ADCs with Less Than ±0.3% Total Unad- justed Error n Four General Purpose Inputs/Outputs Configurable as ADC Inputs n Continuous Scan and Snapshot Modes n Stores Minimum and Maximum Measurements n Alerts When Alarm Thresholds Exceeded n Shutdown Mode with IQ < 50A n Split SDA Pin Eases Opto-Isolation n Available in 16-Lead 4mm × 3mm DFN and MSOP Packages n Telecom Infrastructure n Industrial Equipment n Automotive n Computer Systems and Servers All registered trademarks and trademarks are the property of their respective owners. VDD LTC2992 SDAI SDAO SCL GPIO4 GPIO1 GPIO2 VIN1 3V TO 100V I2C INTERFACE VIN2 0V TO 100V 0.01 ALERT 2992 TA01a SENSE2+ SENSE2– SENSE1+ SENSE1– 0.01 0.1F ADR0 ADR1 GND INTVCC GPIO3 DATAREADY MEASURED VOLTAGE 2 MEASURED VOLTAGE 1 VOUT1 VOUT2 12-BIT MODE TYPICAL CODE 0 1024 2048 3072 4096 –0.50 –0.25 0 0.25 0.50 2992 TA01b MAX ERROR |
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