The TC649 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation(PWM).A thermistor (or other voltage output temperature sensor) connected to VIN furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle.The TC649 automatically suspends fan operation when measured temperature (VIN) is below a user-programmed minimum setting (VAS). An integrated Start-Up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault.In normal fan operation, a pulse train is present at SENSE, Pin 5. A Missing-pulse Detector monitors this pin during fan operation. A stalled, open, or unconnected fan causes the TC649 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. See the Applications section for more information and system design guidelines.The TC649 is packaged in a space-saving 8-Pin PDIP, MSOP or a SOIC package and is available in the industrial temperature range.
Temperature Proportional
Fan Speed for Acoustic Control and Longer Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range
Fan Voltage Independent of TC649 Supply VoltageSupports Any Fan Voltage!
Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
Automatic Shutdown Mode for "Green" Systems
Supports Low Cost NTC/PTC Thermistors
TC649 封装图
TC649 封装图
TC649 封装图
型号 | 制造商 | 描述 | 购买 |
---|---|---|---|
TC649VOATR | TI | IC REG BUCK ADJ 600MA 8SOPWR | 立即购买 |
TC649VOA | - | - | 立即购买 |
TC649EUATR | Maxim | IC REG BUCK ADJ 1A 8SOIC | 立即购买 |
TC649EUA | - | - | 立即购买 |
TC649VUATR | - | - | 立即购买 |
TC649VUA | TI | NO降压型-40℃~+125℃@(TJ)1降压可调1.285V~37V 5A 4.5V~42V 500kHz TO-263-7 DC-DC转换器ROHS | 立即购买 |
TC1034产品简介—TC1034由TSMaster软件操作,可实现多个TC1034并行应用,或是与其它同星FlexRay产品联合工作。当与同星公司的CAN、LIN、汽车以太网接工具配合的时候
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