LTC2992 Dual Wide Range Power Monitor …

1 LTC29921 Rev AFor more information FeedbackTYPICAL APPLICATION FEATURESDESCRIPTIONDual Wide Range Power MonitorThe LT C 2992 is a rail-to-rail system Monitor that mea-sures current, voltage, and Power of two supplies. It features an operating Range of 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.

2 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 25 A 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 Wide Range Power MonitorADC Error (GPIO)APPLICATIONS nRail-to-Rail Input Range : 0V to 100V nWide Input Supply Range .

3 To 100V nMeasures Current, Voltage, and Power nShunt Regulator for Supplies >100V n8-/12-Bit ADCs with Less Than Total Unad-justed Error nFour General Purpose Inputs/Outputs Configurable as ADC Inputs nContinuous Scan and Snapshot Modes nStores Minimum and Maximum Measurements nAlerts When Alarm Thresholds Exceeded nShutdown Mode with IQ < 50 A nSplit SDA Pin Eases Opto-Isolation nAvailable in 16-Lead 4mm 3mm DFN and MSOP Packages nTelecom Infrastructure nIndustrial Equipment nAutomotive nComputer Systems and ServersAll registered

4 Trademarks and trademarks are the property of their respective TO 100VI2 CINTERFACEVIN20V TO ALERT2992 TA01aSENSE2+SENSE2 SENSE1+SENSE1 FADR0 ADR1 GNDINTVCCGPIO3 DATAREADYMEASUREDVOLTAGE 2 MEASUREDVOLTAGE 1 VOUT1 VOUT212-BIT MODETYPICALCODE01024204830724096 ERROR (%)2992 TA01bMAX ERRORLTC29922 Rev AFor more information CONFIGURATIONABSOLUTE MAXIMUM RATINGSS upply VoltagesVDD .. to 100V INTVCC (Note 3) .. to Lesser of , VDD + Input Voltages SENSEn+, SENSEn .. 1V to 100V SENSEn+ to SENSEn.

5 1V to 1V ADR0, ADR1 .. to 7V GPIO1-4 .. to 7 VDigital Input/Output Voltages SCL, SDAI (Note 4) .. to SDAO, SDAO, GPIO1-4 .. to 7V(Notes 1, 2) LTC2992 LTC29921615141312111091712345678 SENSE2 SENSE2+GPIO2 GPIO4 GNDSDAOSDAISCLSENSE1 SENSE1+GPIO1 GPIO3 ADR1 ADR0 INTVCCVDDTOP VIEWDE PACKAGE16-LEAD (4mm 3mm) PLASTIC DFNTJMAX = 150 C, JA = 43 C/W, JC = C/WEXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL12345678 SENSE1 SENSE1+GPIO1 GPIO3 ADR1 ADR0 INTVCCVDD161514131211109 SENSE2 SENSE2+GPIO2 GPIO4 GNDSDAOSDAISCLTOP VIEWMS PACKAGE16-LEAD PLASTIC MSOPTJMAX = 150 C, JA = 120 C/W, JC = 21 C/WLTC2992-1 LTC2992 -11615141312111091712345678 SENSE2 SENSE2+GPIO2 GPIO4 GNDSDAOSDAISCLSENSE1 SENSE1+GPIO1 GPIO3 ADR1 ADR0 INTVCCVDDTOP VIEWDE PACKAGE16-LEAD (4mm 3mm) PLASTIC DFNTJMAX = 150 C, JA = 43 C/W, JC = C/WEXPOSED PAD (PIN 17)

6 PCB GND CONNECTION IS OPTIONAL12345678 SENSE1 SENSE1+GPIO1 GPIO3 ADR1 ADR0 INTVCCVDD161514131211109 SENSE2 SENSE2+GPIO2 GPIO4 GNDSDAOSDAISCLTOP VIEWMS PACKAGE16-LEAD PLASTIC MSOPTJMAX = 150 C, JA = 120 C/W, JC = 21 C/WAverage Pin CurrentsINTVCC .. 10mA to 35mA SCL, SDAI ..5mA SDAO, SDAO, GPIO1-4 ..20mAOperating Junction Temperature Range LTC2992C .. 0 C to 70 C LTC2992I .. 40 C to 85 C LTC2992H .. 40 C to 125 CStorage Temperature Range .. 65 C to 150 CLead Temperature (Soldering, 10sec) MS Package Only.

7 300 CLTC29923 Rev AFor more information INFORMATIONELECTRICAL CHARACTERISTICSSYMBOLPARAMETERCONDITIONS MINTYPMAXUNITSS uppliesVDDVDD Input Supply Voltagel3100 VVCCINTVCC Input Supply Supply CurrentVDD = 48V, INTVCC Open Shutdownl 50mA AICCINTVCC Supply CurrentINTVCC = VDD = 5V Shutdownl 50mA AVCC(LDO)INTVCC Linear Regulator Voltage8V < VDD < 100V ILOAD = VCC(LDO)INTVCC Linear Regulator Load Regulation8V < VDD < 100V ILOAD = 0mA to 10mAl100250mVVCCZS hunt Regulator Voltage at INTVCCVDD = 48V, ICC = VCCZS hunt Regulator Load RegulationVDD = 48V, ICC = to 35mAl250mVVCC(UVL)INTVCC Supply Undervoltage LockoutINTVCC Rising, VDD = (UVL)VDD Supply Undervoltage LockoutVDD Rising, INTVCC (RST)INTVCC I2C Logic ResetINTVCC Falling, VDD = (RST)VDD I2C Logic ResetVDD Falling, INTVCC InputsISENSE+(HI)

8 48V SENSE+ Input CurrentSENSE+, SENSE , VDD = 48V Shutdownl l120170 2 A AISENSE (HI)48V SENSE Input CurrentSENSE+, SENSE , VDD = 48V Shutdownl l20 1 A A The l denotes the specifications which apply over the full operating junction temperature Range , otherwise specifications are at TA = 25 C. VDD is from 3V to 100V unless otherwise noted. (Note 2)TUBETAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGELTC2992 CDE#PBFLTC2992 CDE#TRPBF299216-Lead (4mm 3mm) Plastic DFN0 C to 70 CLTC2992 IDE#PBFLTC2992 IDE#TRPBF299216-Lead (4mm 3mm) Plastic DFN 40 C to 85 CLTC2992 HDE#PBFLTC2992 HDE#TRPBF299216-Lead (4mm 3mm) Plastic DFN 40 C to 125 CLTC2992 CDE-1#PBFLTC2992 CDE-1#TRPBF2992116-Lead (4mm 3mm) Plastic DFN0 C to 70 CLTC2992 IDE-1#PBFLTC2992 IDE-1#TRPBF2992116-Lead (4mm 3mm)

9 Plastic DFN 40 C to 85 CLTC2992 HDE-1#PBFLTC2992 HDE-1#TRPBF2992116-Lead (4mm 3mm) Plastic DFN 40 C to 125 CLTC2992 CMS#PBFLTC2992 CMS#TRPBF299216-Lead Plastic MSOP0 C to 70 CLTC2992 IMS#PBFLTC2992 IMS#TRPBF299216-Lead Plastic MSOP 40 C to 85 CLTC2992 HMS#PBFLTC2992 HMS#TRPBF299216-Lead Plastic MSOP 40 C to 125 CLTC2992 CMS-1#PBFLTC2992 CMS-1#TRPBF2992116-Lead Plastic MSOP0 C to 70 CLTC2992 IMS-1#PBFLTC2992 IMS-1#TRPBF2992116-Lead Plastic MSOP 40 C to 85 CLTC2992 HMS-1#PBFLTC2992 HMS-1#TRPBF2992116-Lead Plastic MSOP 40 C to 125 CConsult ADI Marketing for parts specified with wider

10 Operating temperature ranges. *The temperature grade is identified by a label on the shipping more information on lead free part marking, go to: For more information on tape and reel specifications, go to: Some packages are available in 500 unit reels through designated sales channels with #TRMPBF #orderinfoLTC29924 Rev AFor more information +(LO)0V SENSE+ Source CurrentSENSE+, SENSE = 0V, VDD = 48V Shutdownl l 10 1 A AISENSE (LO)0V SENSE Source CurrentSENSE+, SENSE = 0V, VDD = 48V Shutdownl l 5 1 A AADCRESR esolution (No Missing Codes) (Note 5)NADC[7] = 1 NADC[7] = 0l l8 12 Bits BitsVFSFull-Scale Voltage SENSE (Note 6)