L6982 datasheet(20/48 Pages) STMICROELECTRONICS

部件名	L6982

功能描述	38 V, 2 A synchronous step-down converter with low quiescent current

PDF	48 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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20 / 48 page

Figure below shows the L6982 soft-start procedure with VOUT shorted to GND.

Figure 21. Soft-start procedure with VOUT shorted to GND

Figure below shows the L6982 over current protection with a persistent short-circuit between VOUT and GND.

Figure 22. Over current procedure with persistent short circuit between VOUT and GND

6.7

Thermal shutdown

The shutdown block disables the switching activity if the junction temperature is higher than a fixed internal

threshold (TSHDWN refer to Table 6). The thermal sensing element is close to the power elements, ensuring fast

and accurate temperature detection. A hysteresis of approximately 30 °C prevents the device from turning ON

and OFF too fast. After a thermal protection event is expired the L6982 restarts with a new soft-start.

L6982

Thermal shutdown

DS13683 - Rev 1

page 20/48

L6982 数据表(PDF) 20 Page - STMicroelectronics