L5963 datasheet(23/49 Pages) STMICROELECTRONICS

Part #	L5963

Description	Automotive dual monolithic switching regulator with LDO and HSD

PDF	49 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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L5963

Functional Description

Figure 12. Enable timing for linear regulator (pin ENLDO isn't connected to VINLDO)

The linear regulator operates with output voltages down to 1.2 V, and offers a maximum

dropout voltage of 500 mV at rated load current.

This regulator has an independent thermal protection and a current-limiting circuit.

It should be always supplied (by VINLDO) with a voltage not lower than 3.5 V because, even

if not used, it gives the common supply to all internal blocks which have to stay alive when

the battery drops too low (backup functionality).

6.2.11

High-side driver (HSD)

The HSD pin is the output of the high side driver. It has a dedicated enable pin ENHSD.

Following protections are implemented:



Over-current protection



Short to supply



Short to ground



Short through the load to -1 V



Unpowered short to supply



Loss of ground



Over voltage protection

L5963 Datasheet(PDF) 23 Page - STMicroelectronics