A5974D datasheet(14/46 Pages) STMICROELECTRONICS

部品番号	A5974D

部品情報	Zero load current operation

PDF	46 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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14 / 46 page

Functional description

A5974D

14/46

DocID018774 Rev 2

5.7

Inhibit function

The inhibit feature is used to put the device into standby mode. With the INH pin higher than

2.2 V the device is disabled and the power consumption is reduced to less than 100 µA.

With the INH pin lower than 0.8 V, the device is enabled. If the INH pin is left floating, an

internal pull-up ensures that the voltage at the pin reaches the inhibit threshold and the

device is disabled. The pin is also Vcc compatible.

5.8

Thermal shutdown

The shutdown block generates a signal that turns OFF the power stage if the temperature of

the chip goes higher than a fixed internal threshold (150 ± 10 °C). The sensing element of

the chip is very close to the PDMOS area, ensuring fast and accurate temperature

detection. A hysteresis of approximately 20 °C keeps the device from turning ON and OFF

continuously.

A5974D データシート(PDF) 14 Page - STMicroelectronics