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MAX6639FAEE from MAXIM,MAXIM - Dallas Semiconductor

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MAX6639FAEE

Manufacturer: MAXIM, MAXIM Pb-free

2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller
Partnumber Manufacturer Quantity Availability
MAX6639FAEE MAXIM, MAXIM Pb-free 662 In Stock

Description and Introduction

2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller The MAX6639FAEE is a temperature sensor and fan-speed controller manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Package:** 16-pin QSOP (QSOP-16)  
- **Operating Voltage Range:** 3.0V to 5.5V  
- **Temperature Measurement Range:** -40°C to +125°C  
- **Temperature Accuracy:** ±1°C (typical) from +60°C to +100°C  
- **Fan Control Channels:** 2  
- **Fan Speed Measurement:** Tachometer inputs for monitoring fan speed  
- **Interface:** SMBus/I²C-compatible (supports up to 400kHz)  
- **PWM Outputs:** 2 (for fan speed control)  
- **Resolution:** 0.125°C (temperature measurement)  

### **Descriptions:**
The MAX6639FAEE is designed for monitoring and controlling the temperature and fan speed in electronic systems. It integrates two temperature sensors (one remote diode sensor and an internal sensor) and provides PWM outputs to regulate fan speeds based on temperature readings. It communicates via the SMBus/I²C interface for configuration and data reporting.

### **Features:**
- **Dual Temperature Monitoring:** Measures both internal and external (remote diode) temperatures.  
- **Programmable Fan Control:** Adjusts fan speed via PWM outputs to optimize cooling and noise.  
- **High Accuracy:** ±1°C typical accuracy in critical temperature ranges.  
- **Wide Voltage Range:** Operates from 3.0V to 5.5V, suitable for various applications.  
- **Tachometer Inputs:** Monitors fan speed for fault detection.  
- **Alarm Outputs:** Provides overtemperature alerts.  
- **Low Power Consumption:** Optimized for energy-efficient systems.  
- **SMBus/I²C Interface:** Allows easy integration with system controllers.  

This device is commonly used in PCs, servers, and other electronics requiring thermal management.  

*(Note: For detailed electrical characteristics, refer to the official datasheet.)*

Application Scenarios & Design Considerations

2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller

Alternative Part Number

  • ADT7476AARQZ --: Dual-channel temperature monitor and fan controller with PWM outputs, functionally similar to the MAX6639 in fan control and temperature sensing applications.
  • EMC2305-1-AP-TR --: Five-channel PWM fan controller with temperature monitoring, suitable replacement for multi-fan thermal management designs.
  • LM96163CISD --: Remote diode temperature sensor with fan control output, comparable thermal monitoring and fan drive functionality in a small package.
  • ADT7476AARQZ-REEL --: Remote/local temperature monitor with fan control in a similar QSOP package; widely available and functionally comparable to the MAX6639.
  • EMC2305-1-AIZL-TR --: Multi-channel fan controller with temperature sensing, offering similar fan-control and monitoring functions in a compact package.
  • NCT7802Y --: Hardware monitoring IC with temperature sensing and fan control, suitable as a functional substitute for the MAX6639 in thermal management designs.

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