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Part Number: ADT7468
Description: The ADT7468 dBCool controller is a thermal monitor and multiple PWM fan controller for noise sensitive...
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ADT7468
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General Description
ADT7468 General Description
The ADT7468 dBCool controller is a thermal monitor and multiple PWM fan controller for noise sensitive or power sensitive applications requiring active system cooling. The ADT7468 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. A unique, dynamic TMIN control mode enables the system thermals/acoustics to be intelligently managed. The effectiveness of the system's thermal solution can be monitored using the THERM input. The ADT7468 also provides critical thermal protection to the system using the bidirectional THERM pin as an output to prevent system or component overheating.
ADT7468 Maximum Ratings
| Parameter | Rating |
| Positive Supply Voltage (VCC) Maximum Voltage on 12 VIN Pin Voltage on Any Input or Output Pin Input Current at Any Pin Package Input Current Maximum Junction Temperature (TJMAX) Storage Temperature Range Lead Temperature, Soldering IR Reflow Peak Temperature For Pb-free Lead Temperature (Soldering 10 sec) ESD Rating |
5.5 V 20 V −0.3 V to +6.5 V ±5 mA ±20 mA 150°C −65°C to +150°C 220°C 260°C 300°C 1000 V |
ADT7468 Features
·Monitors up to 5 voltages
·Controls and monitors up to 4 fans
·High and low frequency fan drive signal
·1 on-chip and 2 remote temperature sensors
·Series resistance cancellation on the remote channel
·Extended temperature measurement range, up to 191°C
·Dynamic TMIN control mode intelligently optimizes system acoustics
·Automatic fan speed control mode manages 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® Pentium® 4 processor
·Thermal control circuit via THERM input
·2-wire, 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)
·Controls and monitors up to 4 fans
·High and low frequency fan drive signal
·1 on-chip and 2 remote temperature sensors
·Series resistance cancellation on the remote channel
·Extended temperature measurement range, up to 191°C
·Dynamic TMIN control mode intelligently optimizes system acoustics
·Automatic fan speed control mode manages 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® Pentium® 4 processor
·Thermal control circuit via THERM input
·2-wire, 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)
ADT7468
PDF/DataSheet Download
- Datasheet: ADT7468
- File Size: 3013899 KB
- Manufacturer: AD
- Click here to Download
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