MAX6501

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 +115°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 and TO220-7 Packages


Specifications

Supply Voltage (VCC) ..............................................-0.3V to +7V
TOVER (MAX6501) ..................................................-0.3V to +7V
TOVER (MAX6502) ....................................-0.3V to (VCC + 0.3V)
TUNDER (MAX6503) ...............................................-0.3V to +7V
TUNDER (MAX6504) .................................-0.3V to (VCC + 0.3V)
All Other Pins............................................-0.3V to (VCC + 0.3V)
Input Current (all pins) ....................................................20mA
Output Current (all pins) .................................................20mA
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) ......571mW
Operating Temperature Range ...................-55°C to +125°C
Storage Temperature Range ......................-65°C to +165°C
Lead Temperature (soldering, 10sec) ........................+300°C


Description

The MAX6501 low-cost, fully integrated temperature switches assert a logic signal when their dietemperature crosses a factory progra mmed  threshold.

Operating from a +2.7V to +5.5V supply, these MAX6501 feature two on-chip, temperature-dependent voltage references and a comparator. They are available with factory-trimmed temperature trip thresholds from -45°C to +115°C in 10°C increments, and are accurate to ±0.5°C (typ) or ±6°C (max). These MAX6501 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 activehigh, push-pull output intended to directly drive fancontrol logic. The MAX6501/MAX6502 are offered with hot-temperature thresholds (+35°C to +115°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 MAX6501MAX6504 are offered in eight standard temperature versions; contact the factory for pricing and availability of nonstandard tempe rature versions. They are available in 5-pin SOT23 and 7-pin TO-220 packages.