LTC4151 – High Voltage I2C Current and Voltage Monitor

LTC4151 – High Voltage I2C Current and Voltage Monitor

The LTC4151 and LTC4151-1 are high side power monitors that operate 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 I² C interface when polled by a host. The monitors can also perform on-demand measurement in a snapshot mode. The LTC4151 features a dedicated shutdown pin to reduce power consumption. The LTC4151-1 features split I2C data pins with data in and an inverted data output to drive optoisolators.

Features

• Wide Operating Voltage Range: 7V to 80V
• 12-Bit Resolution for Both Current and Voltages
• I² C Interface
• Additional ADC Input Monitors an External Voltage
• Continuous Scan and Snapshot Modes
• Shutdown Mode (LTC4151) Reduces Quiescent Current to 120μA
• Split SDA for Optoisolation (LTC4151-1)
• Tiny 10-Lead MSOP and 3mm × 3mm DFN Packages