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ADT7476

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·Automatic fan speed control mode contro...

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SeekIC No. : 004277782 Detail

ADT7476: 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 remot...

ADT7476 Data Sheet

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Part Number:
ADT7476
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/29

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Product Details

Description



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
·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® Pentium™ 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


Specifications

Parameter Rating
Positive Supply Voltage (VCC)
Maximum Voltage on +12VIN Pin
Maximum Voltage on +5VIN Pin
Maximum Voltage on All Open-Drain Outputs
Voltage on Any Input or Output Pin
Input Current at Any Pin
Package Input Current
Maximum Junction Temperature (TJ max)
Storage Temperature Range
Lead Temperature, Soldering IR Reflow Peak Temperature
Pb-free Peak Temperature
Lead Temperature (Soldering, 10 sec)
ESD rating		 3.6 V
16 V
6.25V
3.6 V
−0.3 V to +4.2 V
±5 mA
±20 mA
150°C
−65°C to +150°C
220°C
260°C
300°C
1,500 V



Description

The ADT7476 dBCOOL controller is a thermal monitor and multiple PWM fan controller for noise-sensitive or power-sensitive applications requiring active system cooling. The ADT7476 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 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 ADT7476 also provides critical thermal protection to the system using the bidirectional THERM pin as an output to prevent system or component overheating.




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