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參數(shù)資料
| 型號： | TC670ECHTR |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 5/14頁 |
| 文件大小： | 354K |
| 描述： | IC FAN FAILURE DETECTOR SOT23A-6 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 風(fēng)扇控制，溫度監(jiān)控器 |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -40°C ~ 85°C |
| 拓?fù)洌?/td> | 振蕩器 |
| 輸出類型： | 開路漏極 |
| 輸出警報： | 是 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-6 |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 683 (CN2011-ZH PDF) |
| 其它名稱： | TC670ECHTRDKR |
?2003 Microchip Technology Inc.
DS21688C-page 5
TC670
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Analog Input (THRESHOLD)
The voltage set at the THRESHOLD input represents
the fan speed at which the TC670 will signal a fan
speed warning by pulling the ALERT
output low. The
threshold voltage to fan speed correlation can be seen
in Figures 2-2 and 2-3.
3.2
Ground (GND)
The GND pin (Pin 2) of the TC670 should be connected
directly to the analog ground plane of the circuit board.
Care should be taken to keep this pin away from
switching signals, such as the fan excitation signals in
order to avoid false signals on the SENSE pin.
3.3
Digital Input (CLEAR)
The CLEAR input is used to reset or blank the ALERT
output. When the CLEAR input is driven high, the
ALERT
output will be high-impedance (the ALERT
output requires a pull-up resistor).
3.4
Bias Supply Input (V
DD
)
Bias Supply Input, 3.0V to 5.5V. The bias supply input
should be bypassed to ground with a 0.1 礔 ceramic
capacitor.
3.5
Digital (Open-Drain) Output
(ALERT
)
The ALERT
output is an open-drain output that
requires an external pull-up resistor. The ALERT
output
is pulled low when the sensed fan speed (detected by
the pulses occurring at the SENSE input) falls below
the speed that is represented by the voltage at the
THRESHOLD pin. The ALERT
output is latched in this
state until power is cycled or the CLEAR input is
toggled.
3.6
Analog Input (SENSE)
Voltage pulses, which are generated by the fan current
flowing through a sense resistor, are detected at the
SENSE pin and used to calculate the fan speed.
Pin
No.
Symbol
Description
1
THRESHOLD Analog Input
2
GND
Ground Terminal
3
CLEAR
Digital Input
4
VDD
Bias Supply Input
5
ALERT
Digital (Open-Drain) Output
6
SENSE
Analog Input
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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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