LTC4151 High Voltage I2C Current and Voltage Monitor FeaTuresDescripTion n Wide Operating Voltage Range: 7V to 80V The LTC®4151 is a high side power monitor that operates n 12-Bit Resolution for Both Current and Voltages over a wide voltage range of 7V to 80V. In default operation n I2C Interface mode, the onboard 12-bit ADC continuously measures n Additional ADC Input Monitors an External Voltage high side current, input voltage and an external voltage. n Continuous Scan and Snapshot Modes Data is reported through the I2C interface when polled n Shutdown Mode (LTC4151) Reduces Quiescent by a host. The LTC4151 can also perform on-demand Current to 120µA measurement in a snapshot mode. The LTC4151 features n Split SDA for Opto-Isolation (LTC4151-1/LTC4151-2) a dedicated shutdown pin to reduce power consumption. n Available in 10-Lead MSOP, 10-Lead 3mm × 3mm The LTC4151-1/LTC4151-2 feature split I2C data pins to DFN and 16-Lead SO Packages drive opto-isolators. The data out on the LTC4151-1 is inverted while that on the LTC4151-2 is not. applicaTionsPARTPACKAGEFEATURED PIN n –48V Telecom Infrastructure LTC4151 DD10, MS10 SHDN n Automotive LTC4151-1 DD10, MS10 SDAO n Industrial LTC4151-2 S16 SDAO n Consumer L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical applicaTion12-Bit ADC DNL and INL 1.0 0.5 High Side Power Sensing with Onboard ADC and I2C 0 3.3V ADC DNL (LSB) 0.02Ω VIN –0.5 7V TO 80V VOUT VDD 2k 2k SENSE+ SENSE– µCONTROLLER –1.0 VIN SHDN 0 1024 2048 3072 4096 LTC4151 SCL SCL CODE 4151 TA01b ADR1 SDA SDA 1.0 GND MEASURED 4151 TA01 ADR0 ADIN VOLTAGE GND 0.5 0 ADC INL (LSB) –0.5 –1.0 0 1024 2048 3072 4096 CODE 4151 TA01c 4151ff For more information www.linear.com/LTC4151 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts
