L7986 datasheet(14/43 Pages) STMICROELECTRONICS

Part #	L7986

Description	3 A step-down switching regulator

PDF	43 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Functional description

L7986

14/43

DocID022450 Rev 6

Figure 8. Overcurrent protection

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.

L7986 Datasheet(PDF) 14 Page - STMicroelectronics