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参数资料
| 型号： | TC649VOART |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 1/17页 |
| 文件大小： | 119K |
| 代理商： | TC649VOART |
TC649
EVALUATION
KIT
AVAILABLE
TC649-2 12/05/00
2001 Microchip Technology Inc.
DS21449A
PWM Fan Speed Controller with Auto-Shutdown
GENERAL DESCRIPTION
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 en-
sures 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
or a SOIC package and is available in the industrial tem-
perature range.
PIN CONFIGURATIONS
FEATURES
I Temperature Proportional Fan Speed for Acoustic
Control and Longer Fan Life
I Efficient PWM Fan Drive
I 3.0V to 5.5V Supply Range; Fan Voltage Indepen-
dent of TC649 Supply Voltage - Supports
Any Fan Voltage!
I Fault Detection Circuits Protect Against Fan
Failure and Aid System Testing
I Automatic Shutdown Mode for "Green" Systems
I Supports Low Cost NTC/PTC Thermistors
I Space-Saving 8-Pin PDIP and SOICPackages
APPLICATIONS
I Power Supplies
I Computers
I Telecom Equipment
I Portable Computers
I UPS's, Power Amps, etc.
I General Purpose Fan Speed Control
ORDERING INFORMATION
Part No.
Package
Temp. Range
TC649VOA
8-Pin SOIC (Narrow)
0
°C to +85°C
TC649VPA
8-Pin PDIP (Narrow)
0
°C to +85°C
TC642EV
Evaluation Kit for TC649
FUNCTIONAL BLOCK DIAGRAM
18
27
36
45
TC649VPA
PDIP
SOIC
FAULT
SENSE
18
27
36
45
TC649VOA
GND
VDD
VOUT
CF
VIN
VAS
GND
CF
VIN
VAS
FAULT
SENSE
VDD
VOUT
FAULT
SHDN
SENSE
PWM
GND
70mV (typ.)
10k
VAS
VSHDN
VIN
CF
VDD
VOUT
TC649
CONTROL
LOGIC
+
–
+
–
+
–
+
–
3 x TPWM
TIMER
START-UP
TIMER
CLOCK
GENERATOR
MISSING
PULSE
DETECT.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC649VOATR | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC649VPA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC649VUA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC649VUATR | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TC6-4A11 | 制造商:FERROXCUBE 制造商全称:Ferroxcube International Holding B.V. 功能描述:Ferrite toroids |
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