MAX14921

PRODUCTION

High-Accuracy 12-/16-Cell Measurement AFEs

Industry's Most Accurate and Flexible Battery Management System Building Block

Data Sheet (Rev. 3) Product Selection Table
Part Models
2
1ku List Price
Starting From $8.72
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Part Details

  • High Accuracy
    • ±0.5mV (max) Cell Voltage Error
    • Simultaneous Cell Voltage Sampling
    • Self-Calibration
  • Integrated Diagnostics
    • Open-Wire and Short Fault Detection
    • Undervoltage/Overvoltage Warning
    • Thermal Shutdown
  • High Flexibility
    • SPI Interface
    • 12-Cell and 16-Cell Versions
    • +6V Minimum (3 Cells) Operation
    • +0.5V to +4.5V Cell Voltage Range
    • Integrated Cell-Balancing FET Drivers
    • Integrated 5V LDO
  • Low Power
    • 1µA Shutdown Mode
    • 1µA/10µA Cell Current Draw
MAX14921
High-Accuracy 12-/16-Cell Measurement AFEs
MAX14920, MAX14921: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

Technical Articles 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Series Voltage References 1
MAX6126
PRODUCTION Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference
Single Channel A/D Converters 1
MAX11163
PRODUCTION 16-Bit, 250ksps, +5V Unipolar Input, SAR ADC, in Tiny 10-Pin µMAX
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Tools & Simulations

Software Development 1

Evaluation Kits

MAX14921EVKIT

Evaluation Kit for the MAX14921

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Features and Benefits

  • 16-Cell/65V (max) Stack Operating Voltage Range
  • Built-In Isolated USB Interface to a Windows-Based PC
  • Plugh-and-Play GUI Demonstrates All the Major Features of the MAX14921
  • Screw Terminal Battery Connector
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX14921 evaluation kit (EV kit) demonstrates a high-accuracy 16-cell battery-management reference design. The MAX14921 is a high-accuracy 16-cell measurement analog front-end (AFE) in an 80-pin TQFP surface-mount package. The EV kit features an ADC and reference, and an isolated interface to a PC through a USB port to easily measure all cell voltages. Cell stacks up to 16 cells or 65V can be monitored, whichever is lower.
The EV kit circuit demonstrates all the features of the device through a GUI application on a Windows®-based PC.

Applications

  • e-Transportation Energy Packs
  • Energy Storage Packs
  • Industrial Battery Backup Systems
  • Telecom Battery Backup Systems
MAX14921EVKIT
Evaluation Kit for the MAX14921

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