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MIC502

Status: End of Life

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
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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 time base is determined by an external capacitor. An open-collector overtemperature 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 a userdetermined 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.

Additional 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
Parametrics
Name
Value
Drive
High Speed FET
Speed Control
Linear PWM
PWM Frequency (kHz)
0.050 - 100
Package
PDIP-8, SOIC-8

Documents

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Data Sheets

  
1164KB

User Guides


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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC5020YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC5020YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC5021YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC5021YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC5021YN
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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