MAX6502:Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23

Industry's Simplest Temperature Detectors - Easy to Use, Low Cost, No External Components Required!

The MAX6501–MAX6504 low-cost, fully integrated temperature switches assert a logic signal when their die temperature crosses a factory-programmed threshold. Operating from a +2.7V to +5.5V supply, these devices feature two on-chip, temperature-dependent voltage references and a comparator. They are available with factory-trimmed temperature trip thresholds from -45°C to +125°C in 10°C increments, and are accurate to ±0.5°C (typ) or ±6°C (max). These devices require no external components and typically consume 30µA supply current. Hysteresis is pin-selectable at 2°C or 10°C. The MAX6501/MAX6503 have an active-low, open-drain output intended to interface with a microprocessor (µP) reset input. The MAX6502/MAX6504 have an active-high, push-pull output intended to directly drive fan-control logic. The MAX6501/MAX6502 are offered with hot-temperature thresholds (+35°C to +125°C), asserting when the temperature is above the threshold. The MAX6503/MAX6504 are offered with cold-temperature thresholds (-45°C to +15°C), asserting when the temperature is below the threshold. The MAX6501–MAX6504 are offered in eight standard temperature versions; contact the factory for pricing and availability of nonstandard temperature versions. They are available in 5-pin SOT23 package.

Key Features
  • ±0.5°C (typical) Threshold Accuracy Over Full Temperature Range
  • No External Components Required
  • Low Cost
  • 30µA Supply Current
  • Factory-Programmed Thresholds from -45°C to +125°C in 10°C Increments
  • Open-Drain Output (MAX6501/MAX6503) Push-Pull Output (MAX6502/MAX6504)
  • Pin-Selectable 2°C or 10°C Hysteresis
  • SOT23-5 Package
MAX6501, MAX6502, MAX6503, MAX6504: Typical Operating Circuit
MAX6501, MAX6502, MAX6503, MAX6504: Typical Operating Circuit
Applications/Uses
  • µP Temperature Monitoring in High-Speed Computers
  • Fan Control
  • Temperature Alarms
  • Temperature Control
DataSheet
titleDownload file
MAX6501-MAX6504 Data SheetMAX6501-MAX6504.pdf
Parametrics
Part NumberSwitch TypeFunctionsInterfaceAccuracy
(±°C)
Temp. Thresh.
(°C)
Package/PinsBudgetary
Price
See Notes
MAX6501LocalTemperature Switch/Temperature ComparatorLogic4+35
+45
+55
+65
+75
+85
+95
105
115
SOT/5$0.72 @1k
MAX6502+35
+45
+55
+65
+75
+85
+95
SOT/5
MAX6503-45
-35
-25
-15
-5
+5
+15
SOT/5
MAX6504-45
-35
-25
-15
-5
+5
+15
SOT/5
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6502UKP035+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP035+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP035-TNo Longer AvailableMAX6502UKP035+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP045+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP045+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP045-TNo Longer AvailableMAX6502UKP045+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP055+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP055+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP055-TNo Longer AvailableMAX6502UKP055+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP065+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6502UKP065+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP065-TNo Longer AvailableMAX6502UKP065+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP075+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP075+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP075-TNo Longer AvailableMAX6502UKP075+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP085+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP085+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP085-TNo Longer AvailableMAX6502UKP085+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP095+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP095+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6502UKP095-TNo Longer AvailableMAX6502UKP095+SOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP105+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP105+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP105-TNo Longer AvailableMAX6502UKP105+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP115+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP115+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP115-TNo Longer AvailableMAX6502UKP115+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX6502UKP125+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP125+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX6502UKP125-TNo Longer AvailableMAX6502UKP125+TSOT;5 pin-40°C to +85°CSee data sheet
MAX6501-MAX6504.pdf MAX6504
MAX6501-MAX6504.pdf MAX6504
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