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MIC502YM

IC, THERMAL, FAN MANAGEMENT, SMD

MICREL SEMICONDUCTOR MIC502YM

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Manufacturer Part No:
MIC502YM
Order Code:
1517254
Technical Datasheet:
MIC502YM   Datasheet
See all Technical Docs

Product Overview

The MIC502YM 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 time base is determined by an external capacitor. An open-collector over-temperature fault output is asserted if the primary control input is driven above the normal control range. The MIC502 features a low-power sleep mode with user-determined threshold. Sleep mode completely turns OFF the fan and occurs when the system is asleep or OFF.
  • Temperature-proportional fan speed control
  • Controls any voltage fan
  • Over-temperature detection with fault output
  • Integrated fan start-up timer
  • Automatic user-specified sleep mode
  • Supports NTC/PTC thermistors

Applications

Power Management, Computers & Computer Peripherals, Communications & Networking, Consumer Electronics

Product Information

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1Outputs

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10mA

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SOIC

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8Pins

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4.5V

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13.2V

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-40°C

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85°C

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Technical Docs (1)

No Longer Manufactured

HK$10.21

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