MAX31827

RECOMMENDED FOR NEW DESIGNS

Low-Power Temperature Switch with I2C Interface

Smallest, Lowest Power Temperature Switch on the Market

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Overview

  • Stand-alone Temperature Switch with Preconfigured Alarm Thresholds and Hysterisis
  • Active High/Active Low/Open Drain ALARM Output 
  • Excellent Temperature Accuracy
    • Maximum ±1.75°C from -45°C to +145°C 
    • Maximum ±1°C from -40°C to +125°C (12 bits) 
  • External Resistor Selects Address for Location Identification
  • Temperature Resolution is Selectable from 8 to 12 Bits
  • Selectable Timeout Prevents Bus Lockup (Default Enabled) 
  • I2C and SMBus Support
  • User-Defined Alarm Settings
  • ​Selectable PEC for Reliable Communications
  • Up to 1MHz Bus Speed
  • +1.6V to +3.6V Power Supply Voltage
MAX31827
Low-Power Temperature Switch with I2C Interface
MAX31827/MAX31828/MAX31829 Simplified Block Diagram MAX31827/MAX31828/MAX31829 Pin Configuration
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Documentation

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Software Resources


Hardware Ecosystem

Parts Product Life Cycle Description
Temperature Sensors 1
MAX31825 RECOMMENDED FOR NEW DESIGNS 1-Wire® Temperature Sensor with ±1ºC Accuracy
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Tools & Simulations


Evaluation Kits

eval board
MAX31827EVKIT

Evaluation System for the MAX31827/MAX31828/MAX31829

Features and Benefits

  • Proven PCB Layout
  • Fully Assembled and Tested
  • Windows XP, Windows 7/8/8.1/10-Compatible Software

Product Details

The MAX31827 evaluation system (EV system) demonstrates the MAX31827 I2C temperature switch and sensor with hardware-selectable address and alarm. The EV system includes the MAX31827 evaluation kit (EV kit) and the USB2PMB2 module. Windows® 7/8/8.1/10-compatible software provides a user-friendly interface that demonstrates the features of the MAX31827/8/9. The MAX31827 EV kit comes with the 6-pin WLP MAX31827ANTABRPF+ installed.

Applications

  • Battery-Powered Equipment
  • Data Communications Equipment
  • Handheld Electronics
  • Industrial Equipment
  • Servers

eval board
MAX31827EVSYS1

Evaluation System for the MAX31827/MAX31828/MAX31829

Features and Benefits

  • Proven PCB Layout
  • Fully Assembled and Tested
  • Windows XP, Windows 7/8/8.1/10-Compatible Software

Product Details

The MAX31827 evaluation system (EV system) demonstrates the MAX31827 I2C temperature switch and sensor with hardware-selectable address and alarm. The EV system includes the MAX31827 evaluation kit (EV kit) and the USB2PMB2 module. Windows® 7/8/8.1/10-compatible software provides a user-friendly interface that demonstrates the features of the MAX31827/8/9. The MAX31827 EV kit comes with the 6-pin WLP MAX31827ANTABRPF+ installed.

Applications

  • Battery-Powered Equipment
  • Data Communications Equipment
  • Handheld Electronics
  • Industrial Equipment
  • Servers

eval board
ADRD5161-01Z

BMS Module with CANopen CiA 419

Features and Benefits

  • High current power capability: 20A continuous discharge and 50 A surge (≈200 μs), dependent on battery pack specifications.
  • USB C PD input up to 20V, automatically negotiated via the MAX77958 controller for adapters providing ≥3A or ≥5A PDOs
  • Intelligent power path management with the LTC4421 prioritizing USB C input over battery power during charging for optimal efficiency.
  • 3-cell Li-ion/Li polymer battery support, with recommended configurations using Panasonic NCR18650GA cells
  • Expandable CAN interface with daisy chain headers (P8, P9) for multi module system integration.
  • Configurable output current levels based on PD adapter capabilities (20V/3A or 20V/5A).

Product Details

The ADRD5161-01Z is a compact, high performance power delivery and battery management module that integrates USB C power delivery (PD) negotiation, 3 cell Li ion/Li polymer battery support, and intelligent power path control. It delivers up to 20A continuous discharge and 50A surge current, while prioritizing USB C input power through its LTC4421 based architecture, ensuring efficient system operation during charging. The module additionally supports daisy chainable CAN connectivity and configurable charging/discharging parameters for compatibility with a wide range of battery packs.

This solution provides designers with a robust, ready to integrate energy subsystem suitable for mobile, portable, and robotic applications that require high power, flexible charging options, and reliable battery behavior. With USB C PD negotiation up to 20V, adaptable current capabilities, and support for recommended cells such as the Panasonic NCR18650GA, the ADRD5161-01Z minimizes design complexity while offering strong scalability and performance for modern embedded systems.

APPLICATIONS

  • Automated Guided Vehicles (AGVs)
  • Autonomous Mobile Robots (AMRs)
  • Portable Industrial Devices: 3 series Li ion/Li poly support and USB C PD (up to 20V) enable efficient charging and stable operation in compact battery powered tools
  • Light Electric Mobility Subsystems: Stable power path control ensures safe, predictable operation in small mobility and auxiliary power systems

SPECIFICATIONS

  • Power Output: 20A continuous, 50A surge (≈ 200μs)
  • USB‑C PD Input: Up to 20V via MAX77958 (supports ≥3A and ≥5A PDOs)
  • Power‑Path Control: LTC4421 prioritizes USB‑C over battery during charging
  • Battery Support: 3‑cell Li‑ion/Li‑poly; recommended NCR18650GA
  • Communication: CAN interface with P8/P9 daisy‑chain headers
  • Output Current: Configurable based on PD adapter (20V/3A or 20V/5A)

MAX31827EVKIT
Evaluation System for the MAX31827/MAX31828/MAX31829
MAX31827EVKIT, MAX31827EVSYS1: Board Photo
MAX31827EVSYS1
Evaluation System for the MAX31827/MAX31828/MAX31829
MAX31827EVKIT, MAX31827EVSYS1: Board Photo
ADRD5161-01Z
BMS Module with CANopen CiA 419
ADRD5161-01Z Angle Evaluation Board ADRD5161-01Z Top Evaluation Board ADRD5161-01Z Bottom Evaluation Board ADRD5161 Simplified Block Diagram ADRD5161 CAN Cable Setup

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