General Description
The MAX34427 is a specialized current, voltage, and power monitor used to determine power consumption of systems. The device has a very wide dynamic range (20,000:1) that allows for the accurate measurement of power in such systems. The device is configured and monitored with a standard I2C/SMBus serial interface. The unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The device automatically collects the current-sense and voltage samples and then multiplies those values to obtain a power value it then accumulates. Upon a command from the host, the device transfers the accumulated power samples, as well as the accumulation count, to a set of registers accessible by the host. This transfer occurs without missing a sample and allows the host to retrieve the data not only in real-time, but at any time interval.

Benefits and Features
• Enables Code Optimization to Minimize Power Consumption
• Two Power Monitors with Wide 86dB Dynamic Range
• Measures Both Current and Voltage
• Ability to Measure Only Accumulated Current or Accumulated Power
• Reduced Power Consumption in Slow Accumulation Mode
• Power-Down Mode
• Minimizes Processor Overhead with Autonomous Operation
• Per Channel 56-Bit Power Accumulators Capture 2.27 Hours of Data at 2048 Samples per Second
• Per Channel 14-Bit Voltage Registers
• High-Integration Solution Minimizes Part Count, PCB Space, and BOM Cost
• 5μV to 100mV Current-Sense Voltage with Current Common-Mode Range of 0.5V to 24V
• 16 Programmable I2C Addresses
• I2C/SMBus Interface with Bus Timeout
• Temperature Range: -40°C to +85°C
• Small, 2.24mm x 1.91mm Footprint WLP with 12 Bumps at 0.5mm Pitch and 3mm x 3mm Footprint TDFN 12-pin package
• Ease of Development
• Evaluation Kit with Advanced GUI

Applications
• Tablets
• Ultra Notebooks
• Workstations
• Servers
• VR/AR Headsets