LTC2992 Dual Wide Range Power Monitor FEATURES DESCRIPTION n Rail-to-Rail Input Range: 0V to 100V The LTC 2992 is a rail-to-rail system monitor that mea- n Wide Input Supply Range: 2.7V to 100V sures current, voltage, and power of two supplies. It n Measures Current, Voltage, and Power features an operating range of 2.7V to 100V and includes n Shunt Regulator for Supplies >100V a shunt regulator for supplies above 100V. The voltage n 8-/12-Bit ADCs with Less Than 0.3% Total Unad- measurement range of 0V to 100V is independent of the justed Error input supply. Two ADCs simultaneously measure each n Four General Purpose Inputs/Outputs Configurable supplys current. A third ADC monitors the input voltages as ADC Inputs and four auxiliary external voltages. Each supplys current n Continuous Scan and Snapshot Modes and power is added for total system consumption. Mini- n Stores Minimum and Maximum Measurements mum and maximum values are stored and an overrange n Alerts When Alarm Thresholds Exceeded alert with programmable thresholds minimizes the need 2 n Shutdown Mode with I < 50A for software polling. Data is reported via a standard I C Q n Split SDA Pin Eases Opto-Isolation interface. Shutdown mode reduces current consumption n Available in 16-Lead 4mm 3mm DFN and MSOP to 25A typically. Packages 2 The LTC2992 I C interface includes separate data input 2 and output pins for use with standard or opto-isolated I C APPLICATIONS connections. The LTC2992-1 has an inverted data output for use with inverting opto-isolator configurations. n Telecom Infrastructure n All registered trademarks and trademarks are the property of their respective owners. Industrial Equipment n Automotive n Computer Systems and Servers TYPICAL APPLICATION Dual Wide Range Power Monitor ADC Error (GPIO) 0.01 0.50 V IN2 V 12-BIT MODE OUT2 0V TO 100V 0.01 V IN1 0.25 V OUT1 3V TO 100V MAX ERROR + + SENSE1 SENSE1 SENSE2 SENSE2 0 MEASURED TYPICAL V GPIO1 DD VOLTAGE 1 SDAI MEASURED LTC2992 GPIO2 2 VOLTAGE 2 I C 0.25 SDAO INTERFACE DATAREADY GPIO3 SCL ALERT GPIO4 INTV GND ADR0 ADR1 0.50 CC 0 1024 2048 3072 4096 2992 TA01a CODE 2992 TA01b 0.1F Rev A 1 Document Feedback For more information www.analog.com ADC ERROR (%)LTC2992 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Average Pin Currents Supply Voltages INTV .............................................. 10mA to 35mA V ...................................................... 0.3V to 100V CC DD SCL, SDAI ............................................................5mA INTV (Note 3) .....0.3V to Lesser of 5.8V, V + 0.3V CC DD SDAO, SDAO, GPIO1-4 .......................................20mA Analog Input Voltages + Operating Junction Temperature Range SENSEn , SENSEn .................................1V to 100V + LTC2992C ................................................ 0C to 70C SENSEn to SENSEn ..................................1V to 1V LTC2992I .............................................40C to 85C ADR0, ADR1 ............................................ 0.3V to 7V LTC2992H .......................................... 40C to 125C GPIO1-4 ................................................... 0.3V to 7V Storage Temperature Range .................. 65C to 150C Digital Input/Output Voltages Lead Temperature (Soldering, 10sec) SCL, SDAI (Note 4) ............................... 0.3V to 5.9V MS Package Only ..............................................300C SDAO, SDAO, GPIO1-4 ............................. 0.3V to 7V PIN CONFIGURATION LTC2992 LTC2992 TOP VIEW SENSE1 1 16 SENSE2 TOP VIEW + + SENSE1 2 15 SENSE2 SENSE1 1 16 SENSE2 + + GPIO1 3 14 GPIO2 2 15 SENSE2 SENSE1 GPIO1 3 14 GPIO2 GPIO3 4 13 GPIO4 17 4 13 GPIO4 GPIO3 ADR1 5 12 GND ADR1 5 12 GND 6 11 SDAO ADR0 6 11 ADR0 SDAO INTV 7 10 SDAI CC INTV 7 10 SDAI CC 8 9 SCL V DD V 8 9 SCL DD MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE T = 150C, = 120C/W, = 21C/W 16-LEAD (4mm 3mm) PLASTIC DFN JMAX JA JC T = 150C, = 43C/W, = 5.5C/W JMAX JA JC EXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL LTC2992-1 LTC2992-1 TOP VIEW SENSE1 1 16 SENSE2 TOP VIEW + + SENSE1 2 15 SENSE2 SENSE1 1 16 SENSE2 + + GPIO1 3 14 GPIO2 SENSE1 2 15 SENSE2 GPIO1 3 14 GPIO2 GPIO3 4 13 GPIO4 GPIO3 4 13 GPIO4 17 ADR1 5 12 GND ADR1 5 12 GND ADR0 6 11 SDAO ADR0 6 11 SDAO INTV 7 10 SDAI CC INTV 7 10 SDAI CC V 8 9 SCL DD V 8 9 SCL DD MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE T = 150C, = 120C/W, = 21C/W JMAX JA JC 16-LEAD (4mm 3mm) PLASTIC DFN T = 150C, = 43C/W, = 5.5C/W JMAX JA JC EXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL Rev A 2 For more information www.analog.com