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SMBUS Dual Channel High Dynamic Range
MAX34427
Power Accumulator
General Description
Benefits and Features
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
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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
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2
monitored with a standard I C/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.
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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
Applications
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Tablets
2
• 16 Programmable I C Addresses
Ultra Notebooks
Workstations
Servers
2
• I C/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
VR/AR Headsets
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Ease of Development
• Evaluation Kit with Advanced GUI
Ordering Information appears at end of data sheet.
19-101544; Rev 0; 5/22
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