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Overview of MIC502YN

General 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 “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.Features• Temperature-proportional fan speed control• Low-cost, efficient PWM fan drive• 4.5V to 13.2V IC supply range• Controls any voltage fan• Overtemperature detection with fault output• Integrated fan startup timer• Automatic user-specified sleep mode• Supports low-cost NTC/PTC thermistors• 8-pin DIP and SOIC packagesApplications• NLX and ATX power supplies• Personal computers• File servers• Telecom and networking hardware• Printers, copiers, and office equipment• Instrumentation• Uninterruptible power supplies• Power amplifiers

Key Features

  • Temperature-proportional fan speed control
  • Low-cost, efficient PWM fan drive
  • 4.5V to 13.2V IC supply range
  • Controls any voltage fan
  • Overtemperature detection with fault output
  • Integrated fan startup timer
  • Automatic user-specified sleep mode
  • Supports low-cost NTC/PTC thermistors
  • 8-pin DIP and SOIC packages


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Source Content uid MIC502YN Rohs Code Yes
Part Life Cycle Code Obsolete Ihs Manufacturer MICROCHIP TECHNOLOGY INC
Package Description LEAD FREE, PLASTIC, DIP-8 Reach Compliance Code compliant
ECCN Code EAR99 HTS Code 8542.39.00.01
Samacsys Manufacturer Microchip Analog IC - Other Type BRUSHLESS DC MOTOR CONTROLLER
JESD-30 Code R-PDIP-T8 JESD-609 Code e3
Length 9.525 mm Number of Functions 1
Number of Terminals 8 Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C Output Current-Max 0.025 A
Package Body Material PLASTIC/EPOXY Package Code DIP
Package Shape RECTANGULAR Package Style IN-LINE
Qualification Status Not Qualified Supply Voltage-Max (Vsup) 13.2 V
Supply Voltage-Min (Vsup) 4.5 V Supply Voltage-Nom (Vsup) 5 V
Surface Mount NO Temperature Grade INDUSTRIAL
Terminal Finish MATTE TIN Terminal Form THROUGH-HOLE
Terminal Pitch 2.54 mm Terminal Position DUAL
Width 7.62 mm

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