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L7985ATR 数据表(PDF) 14 Page - STMicroelectronics |
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L7985ATR 数据表(HTML) 14 Page - STMicroelectronics |
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14 / 42 page  Functional description L7985 14/42 DocID022446 Rev 7 5.5 Enable function The enable feature allows to put the device into standby mode. With the EN pin lower than 0.3 V the device is disabled and the power consumption is reduced to less than 30 µA. With the 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 returns to about 120 °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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