The MAX6511/MAX6512/MAX6513 are fully integrated, remote temperature switches that use an external P-N junction (typically a diode-connected transistor) as the sensing element to measure the remote temperature. These devices assert 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 MAX6511 has an active-low CMOS output and the MAX6513 has an active-high CMOS output. The MAX6512 has an open-drain output. The output is asserted when the temperature exceeds the threshold value. The active-low open-drain output is intended to interface with a microprocessor (µP) reset or interrupt input. The active-high CMOS output can directly drive a power FET to control a cooling fan.
The MAX6511/MAX6512/MAX6513 operate from a
+3.0V to +5.5V supply and typically consume 400µA of
supply current. They are available in the small 6-pin
SOT23. The MAX6513 is also available in a 6-pin leadfree
TDFN package.
Key Features
Applications/Uses
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-Low CMOS Output (MAX6511) or Open-Drain
Output for Overtemperature Alarm (MAX6512) or
Active-High Output (MAX6513) 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 SOT23 Package
6-Pin TDFN Package (Lead Free)
Battery Packs
CPU Temperature Monitoring in High-Speed Computers
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 prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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