G7921 Overview
The G7921 contains 3 precise digital thermometers, one fan controllers, hardware and software thermal shutdown, and a system-reset circuit. The thermometers report the temperature of 3 remote sensors. The remote sensors are diode-connected transistors typically a low-cost, easily mounted 2N3904 NPN type or the diode built-in in CPU.
G7921 Key Features
- Measures Three Remote Temperatures
- Adjustable Offset for Each Sensor via SMBus
- Accuracy: ±1°C (+ 60°C to + 100°C)
- +4.5V to +5.5V Supply Range
- Programmable Hardware Thermal Shutdown
- SMBus 2-Wire Serial Interface With Writting Protection Function
- Alert Signal for Diode Fault, Fan Fail, and Fan Out of Control
- Supports SMBus Alert Response
- Fan Drivers Using Linear Control Algorithm with Built-in MOSFET
- Closed Loop Speed Control and programmable 8 Bits Open Loop Voltage Control for Fan1