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L99VR02JTR Fiches technique(PDF) 18 Page - STMicroelectronics

No de pièce L99VR02JTR
Description  Automotive linear voltage regulator with configurable output voltage having 500 mA current capability
PDF  38 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99VR02JTR Fiches technique(HTML) 18 Page - STMicroelectronics

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Application information
Figure 31. Application schematic
Vs
EN
Ishort
RST
SEL1
Vcw
Wi
GND
Ctw
Rsh
Vo
SEL2
TW
Vbat
SEL3
C1
C2
Co
RRST
Figure 32. Application schematic – Post regulation
GND
Ctw
Rsh
Vo
Vin
C1
C2
Co
DC/DC
CONVERTER
OR
PRE-REGULATOR
Vbat
Vs
EN
Ishort
Vcw
Wi
TW
RST
SEL1
SEL2
SEL3
RRST
Input ceramic capacitor C2 ≥ 4.7 μF is necessary for the regulator to operate properly. The other input capacitor
C1 can be used as backup supply for the application. The CO capacitor, connected to the output pin, is
for bypassing to GND the high-frequency noise and it guarantees stability even during sudden line and load
variations.
Suggested value is CO = 3.3 µF.
L99VR02J
Application information
DS14076 - Rev 1
page 18/38



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