MAX666CSA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Temperature Sensor and Fan Controller
• Characteristics: High accuracy, low power consumption, small package size
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Monolithic temperature sensor with a built-in fan controller
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Temperature Measurement Range: -40°C to +125°C
• Temperature Accuracy: ±1°C (typical)
• Fan Control Output: Open-drain, capable of sinking up to 50mA
• Shutdown Current: 0.01µA (typical)

Pin Configuration

The MAX666CSA+T has the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| VOUT VDD |-- Pin 2: Supply Voltage (VDD) --| AIN FAN |-- Pin 3: Analog Input (AIN) --| SET OUT |-- Pin 4: Setpoint Input (SET) --| CLK TACH|-- Pin 5: Clock Input (CLK) --| NC NC |-- Pins 6 and 7: No Connection (NC) --| NC SHDN |-- Pin 8: Shutdown Input (SHDN) |___________| ```

Functional Features

• Monitors temperature using an internal sensor or an external diode-connected transistor
• Provides a digital output proportional to the measured temperature
• Controls a fan based on the temperature setpoint
• Offers programmable temperature thresholds for fan activation and deactivation
• Includes a shutdown mode to minimize power consumption when not in use

Advantages and Disadvantages

Advantages: - High accuracy temperature sensing - Low power consumption - Small package size for space-constrained applications - Flexible fan control options

Disadvantages: - Limited to a single fan control output - Requires an external diode-connected transistor for remote temperature sensing

Working Principles

The MAX666CSA+T operates by measuring the temperature using its internal sensor or an external diode-connected transistor. It converts the temperature into a digital value and compares it with the user-programmed setpoint. Based on this comparison, the IC controls the fan output to maintain the desired temperature.

Application Field Plans

The MAX666CSA+T finds applications in various fields, including:

1. Computer Systems: Temperature monitoring and fan control in desktops, laptops, and servers.
2. Industrial Equipment: Thermal management in industrial machinery and equipment.
3. Automotive Electronics: Cooling system control in automotive applications.
4. Home Appliances: Temperature regulation in refrigerators, ovens, and air conditioners.
5. Medical Devices: Temperature control in medical equipment and devices.

Alternative Models

Other alternative models that offer similar functionality to the MAX666CSA+T include:

1. LM75A: Digital temperature sensor and thermal watchdog with I2C interface.
2. TMP36: Analog temperature sensor with a linear voltage output.
3. DS18B20: Programmable 1-Wire digital thermometer with high accuracy.

These alternative models provide different features and interfaces, allowing users to choose the most suitable option for their specific requirements.

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