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NVT224

ON Semiconductor
Part Number NVT224
Manufacturer ON Semiconductor
Description Remote Thermal Monitor and Fan Controller
Published Feb 4, 2016
Detailed Description NVT224 dbCOOLt Remote Thermal Monitor and Fan Controller The NVT224 dbCOOL controller is a thermal monitor and multiple...
Datasheet PDF File NVT224 PDF File

NVT224
NVT224

Overview
NVT224 dbCOOLt Remote Thermal Monitor and Fan Controller The NVT224 dbCOOL controller is a thermal monitor and multiple PWM fan controller for noise−sensitive or power−sensitive applications requiring active system cooling.
The NVT224 can drive a fan using either a low or high frequency drive signal, monitor the temperature of up to two remote sensor diodes plus its own internal temperature, and measure and control the speed of up to four fans so that they operate at the lowest possible speed for minimum acoustic noise.
The automatic fan speed control loop optimizes fan speed for a given temperature.
The effectiveness of the system’s thermal solution can be monitored using the THERM input.
The NVT224 also provides critical thermal protection to the system using the bidirectional THERM pin as an output to prevent system or component overheating.
The NVT224 has been through Automotive Qualification according to AEC−Q100 Grade 1 standards.
Features • Controls and Monitors Up to 4 Fans • High and Low Frequency Fan Drive Signal • 1 On−Chip and 2 Remote Temperature Sensors • Extended Temperature Measurement Range, Up to 191°C • Automatic Fan Speed Control Mode Controls System Cooling Based on Measured Temperature • Enhanced Acoustic Mode Dramatically Reduces User Perception of Changing Fan Speeds • Thermal Protection Feature via THERM Output • Monitors Performance Impact of Intel PentiumR 4 Processor • Thermal Control Circuit via THERM Input • 3−Wire and 4−Wire Fan Speed Measurement • Limit Comparison of All Monitored Values • Meets SMBus 2.
0 Electrical Specifications (Fully SMBus 1.
1 Compliant) • Automotive Qualification According to AEC−Q100 Grade 1 • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant www.
onsemi.
com QSOP−16 CASE 492 MARKING DIAGRAMS TOP MARKING BOTTOM MARKING NVT 224 GYYWW ZZZZ NVT224 = Specific Device Code G = Pb−Free Package YY = Year WW = Work Week ZZZZ = Assembly Lot Code PIN ASSIGNMENT SCL 1 GND 2 VCC 3 TACH3 4 P...


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