LTC4151 - High Voltage I2C Current and Voltage Monitor

The LTC®4151 is a high side power monitor that operates over a wide voltage range of 7V to 80V. In default operation mode, the onboard 12-bit ADC continuously measures high side current, input voltage and an external voltage. Data is reported through the I2C interface when polled by a host. The LTC4151 can also perform on-demand measurement in a snapshot mode. The LTC4151 features a dedicated shutdown pin to reduce power consumption. The LTC4151‑1/LTC4151-2 feature split I2C data pins to drive opto-isolators. The data out on the LTC4151-1 is inverted while that on the LTC4151-2 is not.

Features
  • Wide Operating Voltage Range: 7V to 80V
  • 12-Bit Resolution for Both Current and Voltages
  • I2C Interface
  • Additional ADC Input Monitors an External Voltage
  • Continuous Scan and Snapshot Modes
  • Shutdown Mode (LTC4151) Reduces Quiescent Current to 120μA
  • Split SDA for Opto-Isolation (LTC4151-1/LTC4151-2)
  • Available in 10-Lead MSOP, 10-Lead 3mm × 3mm DFN and 16-Lead SO Packages
Typical Application
LTC4151 Typical Application
LTC4151 Typical Application
Applications
  • –48V Telecom Infrastructure
  • Automotive
  • Industrial
  • Consumer
Packaging
LTC4151 Package Drawing
LTC4151 Package Drawing
LTC4151 Package Drawing
LTC4151 Package Drawing
LTC4151 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC4151CDD-1#PBF3x3 DFN-10C$4.64$2.60
LTC4151CDD-1#TRPBF3x3 DFN-10C$2.66
LTC4151CDD#PBF3x3 DFN-10C$4.64$2.60
LTC4151CDD#TRPBF3x3 DFN-10C$2.66
LTC4151CMS-1#PBFMS-10C$4.64$2.60
LTC4151CMS-1#TRPBFMS-10C$2.66
LTC4151CMS#PBFMS-10C$4.64$2.60
LTC4151CMS#TRPBFMS-10C$2.66
LTC4151CS-2#PBFSO-16C$3.71$2.60
LTC4151CS-2#TRPBFSO-16C$2.66
LTC4151HDD#PBF3x3 DFN-10H$6.36$3.59
LTC4151HDD#TRPBF3x3 DFN-10H$3.65
LTC4151HMS#PBFMS-10H$6.36$3.59
LTC4151HMS#TRPBFMS-10H$3.65
LTC4151IDD-1#PBF3x3 DFN-10I$5.57$3.12
LTC4151IDD-1#TRPBF3x3 DFN-10I$3.18
LTC4151IDD#PBF3x3 DFN-10I$5.57$3.12
LTC4151IDD#TRPBF3x3 DFN-10I$3.18
LTC4151IMS-1#PBFMS-10I$5.57$3.12
LTC4151IMS-1#TRPBFMS-10I$3.18
LTC4151IMS#PBFMS-10I$5.57$3.12
LTC4151IMS#TRPBFMS-10I$3.18
LTC4151IS-2#PBFSO-16I$4.46$3.12
LTC4151IS-2#TRPBFSO-16I$3.18
Demo Boards
Part NumberDescriptionPrice
DC1208ALTC4151 Demo Board | 80V High Side Power Monitor, req. DC2026$75.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
Datasheet
Design Note
Reliability Data
Product Selector Card
LT Journal
Press Release
CAD Symbol
Linduino
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LTC4151 Footprints and Symbols
LTC4151 - DC1206A Linduino .INO File
LTC4151 Linduino .CPP File
LTC4151 Linduino Header File