LTC4151

PRODUCTION

High Voltage I2C Current and Voltage Monitor

Analog Devices LTC4151 Product Info

10 February 2026 4

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

Part details & applications

The LTC4151 is a high side power monitor that operates over a wide voltage range of 7V to 80V. In default operation mode, the on-board 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.

Applications

–48V Telecom Infrastructure
Automotive
Industrial
Consumer

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