MAX6663

PRODUCTION

Temperature Monitors and PWM Fan Controllers

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • Remote-Junction Temperature Sensor Within ±1°C Accuracy (+60°C to +100°C)
  • ACPI-Compatible Programmable Temperature Alarms
  • 0.125°C Resolution Local and Remote-Junction Temperature Measurement
  • Programmable Temperature Offset for System Calibration
  • SMBus 2-Wire Serial Interface with Timeout
  • Automatic or Manual Fan-Speed Control
  • PWM Fan Control Output
  • Fan-Speed Monitoring and Watchdog
  • Fan Fault and Failure Indicators
  • Compatible with 2-Wire or 3-Wire Fans (Tachometer Output)
  • +3V to +5.5V Supply Range
  • Additional Shutdown Set Point (MAX6653)
  • Controlled PWM Rise/Fall Times

The MAX6653/MAX6663/MAX6664 are ACPI-compliant local and remote-junction temperature sensors and fan controllers. These devices measure their own die temperature, as well as the temperature of a remote-PN junction and control the speed of a DC cooling fan based on the measured temperature. Remote temperature measurement accuracy is ±1°C from +60°C to +100°C. Temperature measurement resolution is 0.125°C for both local and remote temperatures.

Internal watchdog set points are provided for both local and remote temperatures. There are two comparison set points for local temperatures and two for remote temperatures. When a set point is crossed, the MAX6653/MAX6663/MAX6664 assert either the active-low INT or active-low THERM outputs. These outputs can be used as interrupts, clock throttle signals, or overtemperature shutdown signals. Two pins on the MAX6653 control the power-up values of the comparison set points, providing fail-safe protection even when the system is unable to program the trip temperatures. The MAX6653 has two additional shutdown outputs, active-low SDR and active-low SDL, that are triggered when the remote or local temperatures exceed the programmed shutdown set points. The active-low INT output for the MAX6653/MAX6663 and active-low THERM outputs for the MAX6653/MAX6663/MAX6664 can also function as inputs if either is pulled low to force the fan to full speed, unless this function is masked by the user.

The MAX6653/MAX6663/MAX6664 are available in 16-pin QSOP packages and operate over the -40°C to +125°C temperature range.

Applications

  • Industrial Controls
  • Networking Equipment
  • Personal Computing
  • Servers
  • Telecom Equipment
  • Test Equipment
  • Workstations
MAX6663
Temperature Monitors and PWM Fan Controllers
MAX6653, MAX6663, MAX6664: Functional Diagram
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Documentation

Data Sheet 1

Technical Articles 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Fan Speed & Thermoelectric Cooler (TEC) Controllers 2
MAX6660
PRODUCTION Remote-Junction Temperature-Controlled Fan-Speed Regulator with SMBus Interface
MAX6661
Remote Temperature-Controlled Fan-Speed Regulator with SPI-Compatible Interface
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Tools & Simulations

Software Development 1

Evaluation Kits

MAX6653EVKIT

Evaluation System/Evaluation Kit for the MAX6653, MAX6663, MAX6664

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Features and Benefits

  • Measures and Displays Local and Remote Sensor Temperatures
  • Controls Fan Speed
  • Programmable Alarms and Configuration
  • On-Board Signal Monitor
  • Operating Temperature Ranges
    • -40°C to +125°C (Remote Sensor)
    • 0°C to +70°C (Board)
  • SMBus/I²C-Compatible 2-Wire Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Completely Assembled and Tested
  • Includes Windows 98/2000/XP-Compatible Software and Demo PC Board
  • Also Evaluates MAX6663/MAX6664

Product Details

The MAX6653 evaluation system (EV system) consists of a MAX6653 evaluation kit (EV kit) and a companion Maxim system management bus (SMBus™) interface board.

The MAX6653 EV kit is an assembled and tested PC board that demonstrates the MAX6653 local/remote temperature sensor and fan-speed regulator. It monitors the junction temperature of an internal and external diode-connected transistor, and converts the temperature to 11-bit, 2-wire serial data. A 2N3906 temperature-sensor transistor comes soldered to the board in a SOT23 package, but it can be removed. The board can then be connected through a twisted pair to a remote diode close to your system.

The MAX6653 also incorporates a closed-loop fan controller that regulates fan speed with either an analog or digital tachometer feedback. Note: Use this EV kit data sheet in conjunction with the MAX6653/MAX6663/MAX6664 data sheet. The EV kit also includes Windows® 98/2000/XP-compatible software, which provides a professional user interface for exercising the MAX6653's features. The program is menu driven and offers a graphical user interface (GUI) complete with control buttons and a status display.

The Maxim SMBus interface board (MAXSMBUS) allows an IBM®-compatible PC to use its parallel port to emulate an SMBus 2-wire interface. Order the MAX6653EVSYS for a complete IBM PC-based evaluation of the MAX6653. Order the MAX6653EVKIT if you already have an SMBus interface.

Applications

  • Industrial Controls
  • Networking Equipment
  • Personal Computing
  • Servers
  • Telecom Equipment
  • Test Equipment
  • Workstations

MAX6653EVSYS

Evaluation System/Evaluation Kit for the MAX6653, MAX6663, MAX6664

Buy Now View Details

Features and Benefits

  • Measures and Displays Local and Remote Sensor Temperatures
  • Controls Fan Speed
  • Programmable Alarms and Configuration
  • On-Board Signal Monitor
  • Operating Temperature Ranges
    • -40°C to +125°C (Remote Sensor)
    • 0°C to +70°C (Board)
  • SMBus/I²C-Compatible 2-Wire Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Completely Assembled and Tested
  • Includes Windows 98/2000/XP-Compatible Software and Demo PC Board
  • Also Evaluates MAX6663/MAX6664

Product Details

The MAX6653 evaluation system (EV system) consists of a MAX6653 evaluation kit (EV kit) and a companion Maxim system management bus (SMBus™) interface board.

The MAX6653 EV kit is an assembled and tested PC board that demonstrates the MAX6653 local/remote temperature sensor and fan-speed regulator. It monitors the junction temperature of an internal and external diode-connected transistor, and converts the temperature to 11-bit, 2-wire serial data. A 2N3906 temperature-sensor transistor comes soldered to the board in a SOT23 package, but it can be removed. The board can then be connected through a twisted pair to a remote diode close to your system.

The MAX6653 also incorporates a closed-loop fan controller that regulates fan speed with either an analog or digital tachometer feedback. Note: Use this EV kit data sheet in conjunction with the MAX6653/MAX6663/MAX6664 data sheet. The EV kit also includes Windows® 98/2000/XP-compatible software, which provides a professional user interface for exercising the MAX6653's features. The program is menu driven and offers a graphical user interface (GUI) complete with control buttons and a status display.

The Maxim SMBus interface board (MAXSMBUS) allows an IBM®-compatible PC to use its parallel port to emulate an SMBus 2-wire interface. Order the MAX6653EVSYS for a complete IBM PC-based evaluation of the MAX6653. Order the MAX6653EVKIT if you already have an SMBus interface.

Applications

  • Industrial Controls
  • Networking Equipment
  • Personal Computing
  • Servers
  • Telecom Equipment
  • Test Equipment
  • Workstations
MAX6653EVKIT
Evaluation System/Evaluation Kit for the MAX6653, MAX6663, MAX6664
MAX6653EVSYS
Evaluation System/Evaluation Kit for the MAX6653, MAX6663, MAX6664

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