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Low-Power Temperature Switch with I2C Interface

Smallest, Lowest Power Temperature Switch on the Market

Product Details

Key Features

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface I2C
Functions Dual Temperature Alarms
Accuracy (±°C) 1
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -55 to +125
Package/Pins THIN WLP/6
Budgetary
Price (See Notes)
0.51
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Parameters

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface I2C
Functions Dual Temperature Alarms
Accuracy (±°C) 1
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -55 to +125
Package/Pins THIN WLP/6
Budgetary
Price (See Notes)
0.51

Key Features

  • 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

Applications/Uses

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

Description

The MAX31827 is a ±1°C accuracy from -40°C to +125°C (12 bits) local temperature switch and sensor with I2C/SMBus interface. The combination of small 6-bump wafer-level package (WLP) and high accuracy makes this temperature sensor/switch ideal for a wide range of applications. It can be used as a temperature switch with preconfigured thresholds and/or as a temperature sensor with I2C interface. When the part operates as an independent temperature switch, the I2C interface doesn't have to be used. This enables use of the part in systems that require thermal protection implemented in hardware, without the need for reconfiguration or use of software/firmware during normal operation.


One-time programmable (OTP) ALARM functionality enables use of the part as a safety mechanism in systems where power dissipation is a challenge.

The I2C/SMBus-compatible serial interface accepts standard write and read commands to read the temperature data and configure the behavior of the sensor. Bus timeout resets the interface if the clock is low for more than 30ms (nominal). Packet error checking (PEC) helps prevent communication errors when used with a master that supports this feature.

The MAX31827 is available in a 6-bump WLP and operates over the -45°C to +145°C temperature range. 

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .