TLE42764_11 Datasheet, PDF (15/20 Pages) Infineon Technologies AG – Low Dropout Linear Voltage Regulator

TLE42764
Application Information
5Q
Internal
Reference
V_ref
2.5 V Typical
Current
and
Saturation
Control
R₁
4 VA
C_Q
22 µF
R₂
AEB02804
Figure 5 External Components at Output for Variable Voltage Regulator
The output voltage can be easily calculated, neglecting the current flowing into the VA pin:
V_Q
=
R-----_1----+_----R-----2
R₂
×
V_ref
where
R₂ < 50 kΩ to neglect the current flowing into the VA pin,
with:
• V_ref: internal reference voltage, typically 2.5V
• R₁: resistor between regulator output Q and voltage adjust pin VA
• R₂: resistor between voltage adjust pin VA and GND
For a 2.5 V output voltage the output pin Q has to be directly connected to the adjust pin VA.
Take into consideration, that the accuracy of the resistors R₁ and R₂ adds an additional error to the output voltage
tolerance.
Data Sheet
15
Rev. 1.2, 2011-02-15