Overview
The ADT7467ARQ-REEL7, produced by ON Semiconductor (not Analog Devices Inc., as the correct manufacturer is ON Semiconductor), is a dbCOOL remote thermal monitor and multiple PWM fan controller. This component is designed for noise-sensitive or power-sensitive applications that require active system cooling. It can monitor the temperature of up to two remote sensor diodes and its own internal temperature, and it controls the speed of up to four fans to minimize acoustic noise. The ADT7467 also provides critical thermal protection to prevent system or component overheating.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 3.0 | 3.3 | 5.5 |
| Operating Temperature Range | °C | -40 | 120 | |
| Internal Clock Frequency (VCC = 3.3 V) | kHz | 83.7 | 90 | 96.3 |
| Output Low Voltage (VOL) for PWM Outputs | V | 0.4 | ||
| High Level Output Current (IOH) for PWM Outputs | mA | 1.0 | ||
| Package Type | 16-QSOP |
Key Features
- Controls and monitors up to four fans using PWM signals.
- Monitors the temperature of up to two remote sensor diodes and its own internal temperature.
- Optimizes fan speed for a given temperature to minimize acoustic noise.
- Provides critical thermal protection using the bidirectional THERM pin.
- Supports dynamic TMIN control mode for intelligent thermal management.
- Communicates via a serial bus with a fixed 7-bit address (0x2E or 0x5C with read/write bit).
Applications
- Noise-sensitive applications requiring low acoustic noise.
- Power-sensitive applications needing efficient cooling solutions.
- Active system cooling in various electronic systems.
- Thermal management in data centers, servers, and other high-density computing environments.
Q & A
- What is the primary function of the ADT7467?
The ADT7467 is a remote thermal monitor and multiple PWM fan controller designed to manage system cooling and minimize acoustic noise.
- How many fans can the ADT7467 control?
The ADT7467 can control and monitor up to four fans.
- What types of temperatures can the ADT7467 monitor?
The ADT7467 can monitor the temperature of up to two remote sensor diodes and its own internal temperature.
- What is the operating temperature range of the ADT7467?
The operating temperature range is from -40°C to +120°C.
- What is the typical supply voltage for the ADT7467?
The typical supply voltage is 3.3 V, with a range from 3.0 V to 5.5 V.
- How does the ADT7467 communicate with other devices?
The ADT7467 communicates via a serial bus with a fixed 7-bit address (0x2E or 0x5C with read/write bit).
- What is the purpose of the THERM pin in the ADT7467?
The THERM pin provides critical thermal protection and can be used as an output to prevent system or component overheating.
- What package type is the ADT7467 available in?
The ADT7467 is available in a 16-QSOP package.
- What are some common applications of the ADT7467?
Common applications include noise-sensitive and power-sensitive systems, active system cooling in data centers and servers, and other high-density computing environments.
- How does the ADT7467 optimize fan speed?
The ADT7467 optimizes fan speed using an automatic fan speed control loop to ensure fans operate at the lowest possible speed for minimum acoustic noise.
