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MAX17852 14-Channel, High-Voltage Smart Sensor Data-Acquisition Interface with Current Sense

  • Author:MAXIM
  • Release on:2021-01-05


Key Features


  • 14-Cell Battery-Voltage Measurement for Lithium-Ion, NiMH, or Super-Cap Cells
  • Four Auxiliary Analog Inputs for NTC Thermistor or Absolute Voltage Measurement
  • Die Temperature Measurement and alert
  • High-Accuracy Differential Measurement I/Os
      Low Noise Current Sense Amplifier • 5mA resolution (Gain = 256)
    • ±2mV Accuracy at +25°C and 3.6V
  • Integrated 14-Channel Data-Acquisition System
    • Differential High-Voltage Mux to ADC
    • 14-Bit ADC Resolution with Oversampling
    • 14 Cell Voltages Measured within 156μs
    • Module Voltage Measurement
    • Redundant ADC
  • Battery Fault Detection
    • Overvoltage and Undervoltage Digital Threshold Detection
    • Enhanced Diagnostic Features for Fault Detection to Support ASIL and FMEA
  • 14 Internal Cell-Balancing Switches
    • Support Up to 300mA per Switch
    • Emergency Cell-Discharge Mode
  • Integrated 9V to 65V Input Linear Regulator
  • Integrated Temperature-Compensated, Voltage Reference
  • Robust Differential Daisy-Chain UART Interface
    • Up to 32 Connected ICs in a Single Daisy-Chain
    • Compatible with Direct MCU Connection
    • Standard UART bytes at 2Mb/s (max) Rate
  • Four General-Purpose Digital I/O Lines
  • Built-In Diagnostics to Support ASIL D and FMEA Requirements
  • Ultra-Low-Power Dissipation
    • 2.0mA (typ) Standby-Mode Supply Current
    • 3µA Shutdown Mode Leakage Current
  • -40°C to +125°C Operating Temperature Range (AEC-Q100 Grade 1)
  • 64-Pin, Lead-Free/RoHS-Compliant, 10mm x 10mm LQFP Package

Applications/Uses

  • 48V system
  • Battery Backup Systems (UPS)
  • Battery Powered Tools
  • Electric Bikes
  • Electric Vehicles (EV)
  • High Voltage Battery Stacks
  • Hybrid Electric Vehicles (HEV's)
  • Super-Cap Systems