SMBus 4-Channel Wide Dynamic Range Power Accumulator

Optimize Code Execution for Maximum Run Time in Mobile Applications

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The MAX34407 is a current and voltage monitor that is specialized for determining power consumption. The device has a wide dynamic range to allow it to accurately measure power in systems that consume small to large amounts of power. 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. The samples are then multiplied to obtain a power value and the power values are then accumulated. Upon a command from the host, the device transfers the accumulated power samples as well as the accumulation count to a set of registers that the host can access. This transfer occurs without missing a sample and allows the host to retrieve the data not in real time, but at any time interval.
MAX34407: Typical Operating Circuit MAX34407: Typical Operating Circuit Enlarge+

Key Features

  • Enables Code Optimization to Minimize Power Consumption in Portable Platforms
    • Four Power Monitors with Wide 66dB Dynamic Range
    • Measures Both Current and Voltage
    • Low Power Consumption
    • Slow Mode for Reduced Power Consumption
    • Power-Down Mode
  • Minimizes Processor Overhead with Autonomous Operation
    • Per Channel 48-Bit Power Accumulators Capture 17 Minutes of Data at 1024 Samples per Second
    • Per Channel 12-Bit Voltage Registers
  • High-Integration Solution Minimizes Parts Count, PCB Space, and BOM Cost
    • Wide Current Common-Mode Range of 2.5V to 15V
    • Low Full-Scale, Current-Sense Voltage of 100mV
    • I2C/SMBus Interface
    • Temperature Range: -40°C to +85°C
    • Small, 2.285mm x 2.185mm Footprint WLP Package with 16 Bumps at 0.5mm Pitch
  • Ease of Development
    • Evaluation Kit with Advanced GUI Available (MAX34407EVKIT#)
    • Windows Driver Available


  • Smartphones
  • Tablets
  • Ultra Notebooks

See parametric specs for Current Sense Amplifiers (52)

Part NumberOutput FormatCMVR
Bi-Dir. Curr. SenseVSENSE_FS
ComparatorsReferenceOper. Temp.
minmaxminmaxtyprecomm.@ -3dBSee Notes
MAX34407 Digital2.5152.73.6300No100Adj.2000Bandgap-40 to +85
$3.17 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX34407EVKIT: Evaluation Kit for the MAX34407
Product Reliability Reports: MAX34407.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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