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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L7980ATR датащи(PDF) 14 Page - STMicroelectronics |
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L7980ATR датащи(HTML) 14 Page - STMicroelectronics |
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14 / 44 page  Functional description L7980 14/44 Doc ID 15181 Rev 4 Figure 8. Overcurrent protection strategy 5.5 Enable function The enable feature allows to put in stand-by mode the device.With EN pin lower than 0.3V the device is disabled and the power consumption is reduced to less than 30 µA. With EN pin lower than 1.2 V, the device is enabled. If the EN pin is left floating, an internal pull down ensures that the voltage at the pin reaches the inhibit threshold and the device is disabled. The pin is also VCC compatible. 5.6 Hysteretic thermal shutdown The thermal shutdown block generates a signal that turns off the power stage if the junction temperature goes above 150°C. Once the junction temperature goes back to about 130°C, the device restarts in normal operation. The sensing element is very close to the PDMOS area, so ensuring an accurate and fast temperature detection. |
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