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MAX6641 - SMBus-Compatible Temperature Monitor

General Description

The MAX6641 temperature sensor and fan controller accurately measures the temperature of its own die and the temperature of a remote pn junction.

The device reports temperature values in digital form using a 2-wire serial interface.

Key Features

  • an over-temperature alarm output to generate interrupts, throttle signals, or shut down signals. The MAX6641 operates from supply voltages in the 3.0V to 5.5V range and typically consumes 500µA of supply current. The MAX6641 is available in a slim 10-pin µMAX® package and is available over the automotive temperature range (-40°C to +125°C).
  • Tiny 3mm x 5mm µMAX Package.
  • Thermal Diode Input.
  • Local Temperature Sensor.
  • Open-Drain PWM Output for Fan Drive.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX6640 2-Channel Temperature Monitor
MAX6642 SMBus-Compatible Remote/Local Temperature Sensor
MAX6643 Automatic PWM Fan-Speed Controllers
MAX6644 Automatic PWM Fan-Speed Controllers
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-3304; Rev 0; 5/04 SMBus-Compatible Temperature Monitor with Automatic PWM Fan-Speed Controller General Description The MAX6641 temperature sensor and fan controller accurately measures the temperature of its own die and the temperature of a remote pn junction. The device reports temperature values in digital form using a 2-wire serial interface. The remote pn junction is typically the emitter-base junction of a common-collector pnp on a CPU, FPGA, or ASIC. The 2-wire serial interface accepts standard System Management Bus (SMBus) TM write byte, read byte, send byte, and receive byte commands to read the temperature data and program the alarm thresholds.