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L99VR02J bảng dữ liệu(PDF) 20 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Automotive linear voltage regulator with configurable output voltage having 500 mA current capability
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L99VR02J bảng dữ liệu(HTML) 20 Page - STMicroelectronics

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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
page 20/38



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