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
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