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| 型号： | TC670ECHTR |
| 厂商： | Microchip Technology |
| 文件页数： | 1/14页 |
| 文件大小： | 354K |
| 描述： | IC FAN FAILURE DETECTOR SOT23A-6 |
| 标准包装： | 1 |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部 |
| 感应温度： | -40°C ~ 85°C |
| 拓扑： | 振荡器 |
| 输出类型： | 开路漏极 |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 产品目录页面： | 683 (CN2011-ZH PDF) |
| 其它名称： | TC670ECHTRDKR |
?2003 Microchip Technology Inc.
DS21688C-page 1
M
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 礎 (typ.)
" V
DD
Range 3.0V to 5.5V
" Available in a 6-Pin SOT-23 Package
Applications
" Protection for Linear-Controlled Fans
" Power Supplies
" Industrial Equipment
" PCs and Notebooks
" Data Storage
" Data Communications Equipment
" Instrumentation
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
sig-
nal, allowing the flexibility of connecting the ALERT
output of the TC670 with other ALERT/FAULT inter-
rupts 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癈 to +85癈. The
TC670 is offered in a 6-pin SOT-23 pin package and
consumes 90 礎 (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
2
5
SOT-23A-6
THRESHOLD
GND
CLEAR
SENSE
ALERT
V
DD
1
3
6
4
From
5
6
C
SENSE
R
4
R
SENSE
+12V
ALERT
LED
DC
FAN
DC
FAN
SENSE
ALERT
2
4
3
1
+5V
R
3
R
2
0.1 礔
V
DD
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 | 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 |
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