L99VR01STR datasheet(20/47 Pages) STMICROELECTRONICS

Part #	L99VR01STR

Description	Automotive low dropout linear voltage regulator with configurable output voltage having 200 mA current capability

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Figure 34. Ishort versus Rsh

Open pin (no resistance on the Ishort pin), is seen as a max resistance corresponding to the maximum Ishort

current.

4.3

Output voltage selection

The L99VR01 can provide one out of 8 different output voltages. The combination of three digital input selectors

(SELx) determines the output voltage according to the following truth table.

Table 12. Truth table

SEL1

SEL2

SEL3

3.3

2.8

2.5

1.8

1.5

1.2

0.8 (Default)

The SELx pins configuration is acquired at the device start-up (EN transition from low to high) and once

configuration is acknowledged, it cannot be changed until next EN transition.

When all the pins are left not connected, the default configuration will be selected.

L99VR01

Output voltage selection

DS13649 - Rev 3

page 20/47

L99VR01STR Datasheet(PDF) 20 Page - STMicroelectronics