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 $0.85 @1k
See All Temperature Switches (22)
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
 

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