Dual Mode™ 5V Programmable Micropower Voltage Regulators The MAX664 is a precision, dual-output temperature sensor and fan controller manufactured by Maxim Integrated.
### **Specifications:**
- **Temperature Sensing:** Monitors both local and remote temperatures.
- **Remote Sensing:** Uses an external diode-connected transistor (e.g., CPU diode) for remote temperature measurement.
- **Local Sensing:** Includes an on-chip temperature sensor.
- **Accuracy:**
- ±1°C (local sensor)
- ±3°C (remote sensor, calibrated)
- **Temperature Range:**
- **Operating:** 0°C to +125°C (local)
- **Remote Diode:** -55°C to +150°C
- **Fan Control:** Provides PWM or DC fan speed control based on temperature thresholds.
- **Outputs:**
- Two independent fan control outputs (PWM or linear).
- Programmable temperature thresholds for fan speed adjustment.
- **Interface:** SMBus/I²C-compatible serial interface for configuration and data readout.
- **Power Supply:** 3.0V to 5.5V operation.
- **Package:** 16-pin QSOP.
### **Descriptions and Features:**
- **Dual Temperature Monitoring:** Tracks both internal (on-chip) and external (CPU or GPU) temperatures.
- **Programmable Fan Control:** Adjusts fan speed dynamically to optimize cooling and reduce noise.
- **Alert Function:** Supports overtemperature alarms via SMBus.
- **Low Power Consumption:** Suitable for battery-powered or energy-efficient systems.
- **Wide Temperature Range:** Supports industrial and computing applications.
- **Flexible Configuration:** User-defined temperature thresholds and hysteresis settings.
The MAX664 is commonly used in PCs, servers, and embedded systems for thermal management.
