MAX6513

Low-Cost, Remote SOT Temperature Switch

Industry's Only Temperature Switch for External P-N Junction - Either a Discrete Diode-Connected Transistor on an External IC Die


Description

The MAX6513 is a fully integrated, remote temperature switch that uses an external P-N junction (typically a diode-connected transistor) as the sensing element to measure the remote temperature. The device asserts a logic signal when the temperature crosses a factory-programmed threshold. Available trip thresholds are from +45°C to +125°C in 10°C increments. Accuracy is within ±3°C (TA = -5°C to +55°C) or ±5°C (TA = -40°C to +85°C). Hysteresis is pin selectable to 5°C or 10°C.

The MAX6513 has an active-high CMOS output. The output is asserted when the temperature exceeds the threshold value. The active-high CMOS output can directly drive a power FET to control a cooling fan.

The MAX6513 operates from a +3.0V to +5.5V supply and typically consumes 400µA of supply current. It is available in a 6-pin lead-free TDFN package.
MAX6513: Typical Operating Circuit MAX6513: Typical Operating Circuit Enlarge+

Key Features

  • Continuously Measure External Junction Temperature
  • Factory-Programmed Temperature Threshold from +45°C to +125°C in 10°C Increments
  • Insensitive to Series Parasitic Resistance
  • Active-High Output for Direct Fan Control
  • < 100ms Response Time
  • Accuracy
    • ±3°C (TREMOTE = +45°C to +125°C, TA = -5°C to +55°C)
    • ±5°C (TREMOTE = +45°C to +125°C, TA= -40°C to +85°C)
  • Pin-Selectable 5°C or 10°C Hysteresis
  • 400µA Average Current Consumption
  • +3.0V to +5.5V Supply Range
  • 6-Pin TDFN Package (Lead(Pb)-Free) with Exposed Pad

Applications/Uses

  • Battery Packs
  • CPU Temperature Monitoring in High-Speed Computers
  • Fan Control
  • Multichip Modules
  • Temperature Alarms
  • Temperature Control
Part Number Switch Type Functions Interface Accuracy
(±°C)
Temp. Thresh.
(°C)
Budgetary
Price
See Notes
MAX6513  Remote Temperature Switch/Temperature Comparator Logic 3 Factory Programmed $0.92 @1k
See All Temperature Switches (21)
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.

Technical Documents

Tutorial 4679 Thermal Management Handbook
App Note 481 Simple Circuit Activates Fan when Processor Heats Up

Quality and Environmental Data

Request Reliability Report for: MAX6513 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Temperature Family by Product Type
Topmark Coding MAX6513
 

Related Resources


MAX31856
Precision Thermocouple to Digital Converter with Linearization

  • Provides High-Accuracy Thermocouple Temperature Readings
  • Internal Cold-Junction Compensation Minimizes System Components
  • ±45V Input Protection Provides Robust System Performance

MAX31915
Industrial, Octal, Digital Input Translator

  • Flexible Supply Options Enables Usage in 24V, 12V, and 5V Supplied Systems
  • Low Power and Low Heat Dissipation
  • Configurability Enables a Wide Range of Standard and Custom Applications

MAX31914
Ultra-Low Power Industrial, Octal, Digital Input Translator

  • Flexible Supply Options Enables Usage in 24V, 12V, and 5V Supplied Systems
  • Low Power and Low Heat Dissipation
  • Configurability Enables a Wide Range of Standard and Custom Applications

MAX14838
24V Pin-Configurable Industrial Sensor Output Drivers

  • High Configurability Simplifies Design
  • Integrated Protection Provides Robust Sensor Solutions
  • Fast Turn-Off of Inductive Loads Up to 1.5H

MAX14839
24V Pin-Configurable Industrial Sensor Output Drivers

  • High Configurability Simplifies Design
  • Integrated Protection Provides Robust Sensor Solutions
  • Fast Turn-Off of Inductive Loads Up to 1.5H

MAX21105
Low-Power, Ultra-Accurate 6 DoF IMU

  • Accurate and Stable Performance Over Temperature for Platform Stabilization
  • Low-Power Operation Extends Battery Life
  • Compact Package Reduces Board Space and Enhances Device Reliability

MAX35102
Time-to-Digital Converter Without RTC

  • High-Accuracy Flow Measurement for Billing and Leak Detection
  • High-Accuracy Temperature Measurement for Precise Heat and Flow Calculations
  • Maximizes Battery Life with Low Device and Overall System Power