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 L99VR02J can provide one out of eight different output voltages. The combination of three digital input

selectors (SELx) determines the output voltage according to the following Table 12.

Table 12. Truth table

VO

SEL1

SEL2

SEL3

5

1

1

1

3.3

1

1

0

2.8

1

0

1

2.5

1

0

0

1.8

0

1

1

1.5

0

1

0

1.2

0

0

1

0.8 (default)

0

0

0

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

configuration is acknowledged. It cannot be changed until the next EN transition.

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

Figure 35. Example of output voltage selection

Vs

EN

Ishort

RST

SEL1

Vcw

Wi

GND

Ctw

Rsh

Vo =2.5V

SEL2

TW

Vbat

SEL3

Vs

Vo

SELx pins are internally connected to GND via the pull-down current source.

L99VR02J

Output voltage selection

DS14076 - Rev 1

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