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MICROCHIP  TC646BEOA  Motor Driver/Controller, PWM, 3V to 5.5V supply, 4.4V/5 mA/1 Output, SOIC-8

MICROCHIP TC646BEOA
Technical Data Sheet (552.26KB) EN 查看所有技術文件

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產品總覽

The TC646BEOA is a switch-mode PWM Fan Speed Controller with an auto-shutdown for use with brushless DC fans. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor connected to the VIN input furnishes the required control voltage of 1.25 to 2.65V for 0 to 100% PWM duty cycle. It automatically suspends fan operation when measured temperature is below user programmed minimum setting. An integrated start-up timer ensures reliable motor start-up at turn-ON, coming out of shutdown mode, auto-shutdown mode or following a transient fault. It features Microchip Technology's proprietary FanSense™ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE. A missing-pulse detector monitors this pin during fan operation. A stalled, open or unconnected fan causes the TC646 to trigger its start-up timer once. If the fault persists, the FAULT output goes low and the device is latched in its shutdown mode.
  • Temperature proportional fan speed for acoustic control and longer fan life
  • Efficient PWM fan drive
  • FanSense™ Fault detection circuit protects against fan failure and aids system testing
  • Shutdown mode for green systems
  • Supports NTC/PTC thermistors
  • Over-temperature indication

產品訊息

Motor Type:
PWM
No. of Outputs:
1Outputs
Output Current:
5mA
Output Voltage:
4.4V
Driver Case Style:
SOIC
No. of Pins:
8Pins
Supply Voltage Min:
3V
Supply Voltage Max:
5.5V
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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應用

  • Power Management;
  • Computers & Computer Peripherals;
  • Communications & Networking;
  • Portable Devices;
  • HVAC

法規與環境保護

濕敏等級:
MSL 1 - Unlimited
原產地:
United States

承擔產品生產最後程序之國家

符合 RoHS 規定:
關稅編號:
85423990
重量 (公斤):
.000476