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| 型号： | TC670ECH |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO6 |
| 封装： | EIAJ, SC-74, SOT-23, 6 PIN |
| 文件页数： | 1/12页 |
| 文件大小： | 469K |
| 代理商： | TC670ECH |
2002 Microchip Technology Inc.
DS21688B-page 1
TC670
Features
Fan Wear-out Detection for 2-Wire Linear
Controlled Fans
Replacement System for 3-Wire Fans
Fan Alert Signal when Fan Speed is below
Programmed Threshold
CLEAR Capability for Eliminating False Alarm
Low Operating Current, 90
A(typ.)
VDD Range 3.0V to 5.5V
Availableina6-Pin SOT-23 Package
Applications
Protection for Linear Controlled Fans
Power Supplies
Industrial Equipment
PCs and Notebooks
Data Storage
Data Communications Equipment
Instrumentation
Device Selection Table
Package Type
General Description
The TC670 is an integrated fan speed sensor that
predicts and/or detects fan failure, preventing thermal
damage to systems with cooling fans. When the fan
speed falls below a user specified level, the TC670
asserts an ALERT signal. With this design, a critical
minimum fan speed is determined by the user. The fan
alert level is then set with a resistor divider on the
THRESHOLD pin (Pin 1) of the TC670. When the
minimum fan speed is reached, the ALERT pin (Pin 5)
changes from a digital HIGH to LOW. This failure
detection works with all linear controlled 2-wire fans.
The TC670 eliminates the need for 3-wire fan solutions.
A CLEAR option can be used to reset the ALERT signal,
allowing the flexibility of connecting the ALERT output
of the TC670 with other Alert/FAULT interrupts in the
system. This feature can be implemented so that false
Fan Fault conditions do not initiate system shutdown.
The TC670 is specified to operate over the full
industrial temperature range of -40°C to +85°C. The
TC670 is offered in a SOT23-6 pin package and
consumes 90
A (typ) during operation. The space
saving package and low power consumption make this
device an ideal choice for systems requiring fan speed
monitoring.
Typical Application Circuit
Part Number
Package
Temp. Range
TC670ECH
6-Pin SOT-23
-40°C to +85°C
25
SOT-23A-6
THRESHOLD
GND
CLEAR
SENSE
ALERT
VDD
1
3
6
4
T
C
6
70E
CH
From
5
6
CSENSE
R4
RSENSE
+12V
ALERT
LED
DC
FAN
DC
FAN
SENSE
ALERT
2
4
3
1
+5V
R3
R2
0.1 F
VDD
CLEAR
THRESHOLD
GND
Microcontroller
Tiny Predictive Fan Failure Detector
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC670ECHTR | 功能描述:马达/运动/点火控制器和驱动器 Predictive Fan Failure Det 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 |
| TC670ECHTR | 制造商:Microchip Technology Inc 功能描述:IC CONTROLLER FAN MANAGEMENT 制造商:Microchip Technology Inc 功能描述:IC, CONTROLLER, FAN MANAGEMENT |
| TC670ECHTR | 制造商:Microchip Technology Inc 功能描述:Fan Management Controller IC Package/Cas |
| TC670ECHTR-CUT TAPE | 制造商:Microchip 功能描述:TC670 Series 3 to 5.5 V Tiny Predictive Fan Failure Detector - SOT-23-6 |
| TC68 | 功能描述:铝质电解电容器 - 带引线 60uF 350V RoHS:否 制造商:Kemet 引线类型: 电容:220 uF 容差:20 % 电压额定值:25 V 工作温度范围: 端接类型:Radial 外壳直径:8 mm 外壳长度:11 mm 引线间隔:5 mm 产品:General Purpose Electrolytic Capacitors 封装:Bulk |
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