Analog Devices ADT7470 Temperature Sensor Hub and Fan Controller Data Sheet

This datasheet details the ADT7470, a multi-channel temperature sensor hub and PWM fan controller for active cooling systems.

Brand: Analog Devices
Category: Other Electronics
Document type: Datasheet
Language: English
Pages: 40
File format: PDF
File size: 574 KB
Published: 15 October, 2026
Updated: 15 October, 2026
Model: ADT7470
MD5 checksum: A28B6C359BE0A5CD191D79C647B8BDF4
PDF: Analog Devices ADT7470 Temperature Sensor Hub and Fan Controller Data Sheet PDF

About this manual

The ADT7470 is a multi-channel temperature sensor and PWM fan controller designed to interface directly with an I2C bus. It monitors up to 10 daisy-chained TMP05 temperature sensors and controls the speed of four fans independently via automatic or manual control loops.

The device features a FULL_SPEED input for external hardware control under extreme thermal conditions and an SMBALERT interrupt to communicate error conditions such as fan failures or out-of-limit measurements. It supports fast I2C standards up to 400 kHz and meets SMBus 2.0 electrical specifications.

What's inside

Features
Applications
General Description
Specifications
Serial Bus Timing Specifications
Absolute Maximum Ratings
Thermal Characteristics
Pin Configuration
Functional Description
Revision History

Specifications

Supply Voltage Range	3.0 V to 5.5 V
Operating Temperature Range	-40°C to +125°C
Max Clock Frequency	400 kHz
Number of Fan Channels	4
Max Remote Temperature Sensors	10
Package Type	16-Lead QSOP

Frequently asked questions

What is the maximum clock frequency supported?

The device supports a fast I2C standard with a maximum frequency of 400 kHz.

How many fans can be controlled simultaneously?

The ADT7470 can monitor and control the speed of four fans independently.

What is the supply voltage range?

The operating supply voltage ranges from 3.0 V to 5.5 V.

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