ADT7490 - ON Semiconductor

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADT7490
Manufacturer

ON Semiconductor
ChipWorker Part#

CW1242989403
Description

Remote Thermal Monitor and Fan Controller with PECI Interface
Documentation

Datasheet

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Product Description

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
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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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