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MAX6639 Datasheet 2-Channel Temperature Monitor

Manufacturer: Maxim Integrated (now Analog Devices)

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General Description

The MAX6639 monitors its own temperature and one external diode-connected transistor or the temperatures of two external diode-connected transistors, typically available in CPUs, FPGAs, or GPUs.

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.

Temperature data can be read at any time over the SMBus, and three programmable alarm outputs can be used to generate interrupts, throttle signals, or overtemperature shutdown signals.

Overview

www.DataSheet4U.com 19-3682; Rev 0; 5/05 2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed.

Key Features

  • 2 Thermal-Diode Inputs.
  • Up to 25kHz PWM Output Frequency.
  • 3 Selectable SMBus Addresses.
  • Local Temperature Sensor.
  • 1°C Remote Temperature Accuracy.
  • Two PWM Outputs for Fan Drive (Open Drain; Can be Pulled Up to +13.5V).
  • Programmable Fan-Control Characteristics.
  • Automatic Fan Spin-Up Ensures Fan Start.
  • Controlled Rate-of-Change Ensures Unobtrusive Fan-Speed Adjustments.
  • ±3% Fan-Speed Measurement Accuracy.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
MAX6639F 2-Channel Temperature Monitor
MAX6633 12-Bit Plus Sign Temperature Sensors
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MAX6635 12-Bit Plus Sign Temperature Sensors
MAX6636 7-Channel Precision Temperature Monitor
MAX6638 Temperature Monitor
MAX6602 Five-Channel Precision Temperature Monitor
MAX6603 Platinum RTD-to-Voltage Signal Conditioner
MAX6612 High-Slope Low-Power - Analog Temperature Sensor in an SC70 Package
MAX6615 Dual-Channel Temperature Monitors and Fan-Speed Controllers