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參數(shù)資料
| 型號(hào)： | TC6501 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Ultra Small Temperature Switches with Pin Selectable Hysteresis |
| 中文描述： | 超小型溫度開(kāi)關(guān)，引腳可選擇遲滯 |
| 文件頁(yè)數(shù)： | 7/17頁(yè) |
| 文件大?。?/td> | 326K |
| 代理商： | TC6501 |
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2004 Microchip Technology Inc.
DS21451D-page 7
TC6501/2/3/4
5.0
APPLICATIONS
The TC6501 and TC6503 have open-drain outputs and
are, therefore, intended to interface as microcontroller
reset inputs. Moreover, the combination of these two
devices can be used to implement a temperature
window alarm by wire-ORing the outputs and using an
external pull-up resistor (see Figure 5-1).
FIGURE 5-1:
Temperature Alarm.
Over and Under
The TC6502 can be used to control a DC fan. The fan
turns on when the sensed temperature rises above the
factory-set threshold and remains on until the
temperature falls below threshold minus the hysteresis
selected. An additional fail-safe measure could be
designed by using a second TC6502 with a higher
temperature threshold to alert the user of an impending
thermal shutdown, should the temperature continue to
rise (see Figure 5-2).
FIGURE 5-2:
Temperature Alert.
Fan Control with Over
The TC6504, with its push-pull output, may be used in
a similar fashion to turn on a heater element at cold
temperatures (see Figure 5-3).
FIGURE 5-3:
Thermostat.
TC6504 As Heater
HYST
V
CC
GND
GND
HYST
UNDER
T
+5V
R
PULL-UP
100 k
GND GND
V
CC
T
OVER
TC6501
TC6503
100 pF
Out of Range
100 pF
Temperature
GND
GND
100 pF
HYST
+5V
T
T
OVER
V
CC
TC6502PO65
GND GND
HYST
T
OVER
CC
V
TC6502PO45
Temperature
Fault
Fan Control
100 pF
Heater "On"
T
UNDER
T
UNDER
T
UNDER
+ 2°C
TC6504
+5V
12V
GND
GND HYST
V
CC
Heater
T
UNDER
100 pF
Temperature
Time
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