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Product Detailed Parameters
- Description：IC REMOTE THERMAL CTRLR 16QSOP
- Series：dBCool®
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Function：Fan Control, Temp Monitor
- Sensor Type：Internal and External
- Sensing Temperature：-40°C ~ 125°C, External Sensor
- Accuracy：±3°C Local(Max), ±5°C Remote(Max)
- Topology：ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
- Output Type：SMBus
- Output Alarm：No
- Output Fan：Yes
- Voltage - Supply：3V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：16-QSOP
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Overview
The ADT7466ARQZ-REEL7 is a dBCool remote thermal controller and voltage monitor manufactured by onsemi. It features an SMBus interface, supports up to two remote temperature sensors with series resistance cancellation, and controls up to two fans. The device includes local and remote diode accuracy of ±1°C (20°C to 60°C) and ±3°C (-40°C to +125°C). It operates within a supply voltage range of 3.0V to 5.5V and functions between -40°C and +125°C. Packaged in a 16-lead QSOP.
Feature Summary
- Monitors analog voltages, thermistor temperatures, and remote diode sensors with series resistance cancellation.
- Controls fan speed via automatic control loops and enhanced acoustic mode to minimize noise perception.
- Integrates thermal protection monitoring through PROCHOT input for processor performance impact assessment.
Applications
- Low acoustic noise notebook PCs
Procurement Notes
Verify the specific ordering suffix REEL7 against current manufacturer documentation to confirm packaging details. Confirm that the component status remains active or identify valid alternatives if discontinued. Ensure compatibility with system voltage requirements and serial bus protocols before integration.
Selection Notes
Select this component for systems requiring precise thermal management with minimal acoustic output. Verify that the application utilizes compatible remote sensor types and requires SMBus communication. Ensure the operating environment falls within the specified temperature and voltage ranges for optimal accuracy.
Part Context
This part belongs to the ADT7466 family of thermal controllers. It is designed for noise-sensitive applications where active cooling is necessary but fan noise must be minimized. The device integrates multiple sensing capabilities and fan control logic into a single IC.
Replacement Considerations
Check for direct pin-compatible substitutes from onsemi or other manufacturers offering similar SMBus thermal controllers with dual fan drive outputs and remote sensor support.
FAQ
How does the ADT7466 handle series resistance in remote temperature sensing?
The device includes a series resistance cancellation feature that can compensate for resistance up to 2 kΩ in the path connecting to the remote thermal diode.
What is the function of the PROCHOT input?
The PROCHOT input allows the ADT7466 to monitor the thermal control circuit of a processor, such as an Intel Pentium 4, to time and assess the performance impact of thermal events.
