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LM57-Q1器件是一款具有模擬溫度傳感器輸出的精密雙路輸出溫度開關,適用于寬溫度范圍的應用(例如汽車級) 。跳變溫度(T TRIP )可從-40°C至160°CV TEMP 是AB類模擬電壓輸出,該電壓輸出與溫度成正比,負溫度系數(NTC)可編程。兩個外部1%電阻設置T TRIP 和V TEMP 斜率。數字和模擬輸出具有保護功能,并且可監視系統過熱事件。
內置的熱滯后功能(T HYST )可防止數字輸出發生振蕩.T OVER 和 T OVER 數字輸出將在芯片溫度超過T TRIP 時置為有效,在芯片溫度低于T TRIP 與T HYST 的差值時置為無效。
T OVER 為高電平有效,并且采用推挽結構。 T OVER 為低電平將T&sub> OVER 與TRIP-TEST相連,可以輸出發生跳變后將其鎖存。將TRIP-TEST驅動為高電平會將數字輸出置為有效。處理器可檢查T OVER 或 T OVER < /sub> 的狀態,從而確認它們是否已切換至激活狀態。這樣一來,便可以在系統裝配后現場驗證比較器和輸出電路的功能。當TRIP-TEST為高電平時,V TEMP 引腳為跳變基準電壓。系統隨后可使用該電壓計算LM57-Q1的閾值。
所有商標均為其各自所有者的財產。
Operating Temperature Range (C) |
Accuracy Over Temp Range (Max) (C) |
Sensor Gain (mV/Deg C) |
SetPoint Value (deg C) |
SetPoint Type |
Output Type |
Supply Voltage (Min) (V) |
Supply Voltage (Max) (V) |
Supply Current (Typ) (uA) |
Comparator Channels (#) |
Features |
Rating |
Package Group |
Package Size: mm2:W x L (PKG) |
Interface |
LM57-Q1 | LM26LV-Q1 | TMP300-Q1 | TMP708 | TMP708-Q1 | TMP709 | TMP709-Q1 |
---|---|---|---|---|---|---|
-50 to 125 -50 to 150 -50 to 160 |
-40 to 150 | -40 to 125 | -40 to 125 | 0 to 125 | -40 to 125 | 0 to 125 |
1.3 | 2.3 | 2 | 3 | 3 | 3 | 3 |
-5.2 to 12.9 | -5.1 to -12.8 | 10 | ||||
-40 to 160 |
Range (0 to 150) 130, 135 |
-40 to 125 | 0 to 125 | 0 to 125 | 0 to 125 | 0 to 125 |
Resistor Programmable | Factory Programmed | Resistor Programmable | Resistor Programmable | Resistor Programmable | Resistor Programmable | Resistor Programmable |
Open Drain Push Pull |
Open Drain Push Pull |
Open Drain | Open Drain | Open Drain | Open Drain | Open Drain |
2.4 | 1.6 | 1.8 | 2.7 | 2.7 | 2.7 | 2.7 |
5.5 | 5.5 | 18 | 5.5 | 5.5 | 5.5 | 5.5 |
24 | 8 | 110 | 40 | 40 | 40 | 40 |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
Built-in Hysteresis Hysteresis (5°C or 10°C) Temperature Sensor and Switch Trip Test |
Built-in Hysteresis Hysteresis (5°C) Temperature Sensor and Switch Trip Test |
Hysteresis (5°C or 10°C) Pin-Selectable Hysteresis Temperature Sensor and Switch |
Hysteresis (10°C or 30°C) Pin-Selectable Hysteresis |
Hysteresis (10°C or 30°C) Pin-Selectable Hysteresis |
Hysteresis (2°C or 10°C) Pin-Selectable Hysteresis |
Hysteresis (2°C or 10°C) Pin-Selectable Hysteresis |
Automotive | Automotive | Automotive | Catalog | Automotive | Catalog | Automotive |
TSSOP | WSON | SC70 | SOT-23 | SOT-23 | SOT-23 | SOT-23 |
8TSSOP: 19 mm2: 6.4 x 3(TSSOP) | See datasheet (WSON) | 6SC70: 4 mm2: 2.1 x 2(SC70) | 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) |
Analog Output Switch |
Analog Output Switch |
Analog Output Switch |
Switch | Switch | Switch | Switch |