ADT7490: Remote Thermal Monitor and Fan Controller with PECI Interface
The ADT7490 is a thermal monitor and multiple PWM fan controller for noise-sensitive or power-sensitive applications requiring active system cooling. The ADT7490 includes a local temperature sensor, two remote temperature sensors including series resistance cancellation, and monitors CPU temperature with a PECI interface. The ADT7490 can drive a fan using either a low or high frequency drive signal, and measure and control the speed of up to four fans so they operate at the lowest possible speed for minimum acoustic noise.
Features- 1 local on-chip temperature sensor
- 2 remote temperature sensors
- 3-current external temperature sensors with series resistance cancellation (SRC)
- PECI interface for CPU thermal information and support of up to 4 PECI inputs on one pin
- 3 high frequency or low frequency PWM outputs for use with 3-wire or 4-wire fans
- 4 TACH inputs to measure fan speed
- OS independent automatic fan speed control based on thermal information
- Dynamic TMIN control mode to optimize system acoustics
- Default startup at 100% PWM for all fans for robust operation
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Applications | End Products- Notebook and Desktop Computers
- Servers
- Game Consoles
- RFID Reader
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Data Sheets (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| QSOP24 NB | 492B-01 (63.4kB) | A |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| ADT7490ARQZ | Last Shipments | Pb-free
Halide free | QSOP-24 | 492B-01 | 3 | Tube | 56 | |
| ADT7490ARQZ-R7 | Last Shipments | Pb-free
Halide free | QSOP-24 | 492B-01 | 3 | Tape and Reel | 1000 | |
| ADT7490ARQZ-REEL | Active | Pb-free
Halide free | QSOP-24 | 492B-01 | 3 | Tape and Reel | 2500 | $0.85 |
Specifications
| Product | Data Transmission Standard | ICC Max (mA) | VCC Min (V) | VCC Max (V) | T Min (°C) | T Max (°C) |
|---|
| ADT7490ARQZ-REEL | SMBus | 5 | 3 | 3.6 | -40 | 125 |
