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MIC502

DescriptionThe MIC502 is a thermal and fan management IC which supports the features for NLX/ATX power supplies and other control applications. Fan speed is determined by an external temperature sensor, typically a thermistor-resistor divider, and (optionally) a second signal, such as the NLX Fa...

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MIC502: DescriptionThe MIC502 is a thermal and fan management IC which supports the features for NLX/ATX power supplies and other control applications. Fan speed is determined by an external temperature se...

MIC502 Data Sheet

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Part Number:
MIC502
Supply Ability:
5000

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

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Product Details

Description



Description

The MIC502 is a thermal and fan management IC which supports the features for NLX/ATX power supplies and other control applications.

Fan speed is determined by an external temperature sensor, typically a thermistor-resistor divider, and (optionally) a second signal, such as the NLX "FanC" signal. The MIC502 produces a low-frequency pulse-width modulated output for driving an external motor drive transistor. Low-frequency PWM speed control allows operation of standard brushless dc fans at low duty cycle for reduced acoustic noise and permits the use of a very small power transistor. The PWM MIC502 time base is determined by an external capacitor.

An open-collector overtemperature fault output of MIC502 is asserted if the primary control input is driven above the normal control range.

The MIC502 features a low-power sleep mode with a user-determined threshold. Sleep mode completely turns off the fan and occurs when the system is asleep or off (both control inputs very low). A complete shutdown or reset can also be initiated by external circuitry as desired.

The MIC502 is available as 8-pin plastic DIP and SOIC packages in the 40°C to +85°C industrial temperature range.




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