TLE4252_07 Datasheet, PDF (8/13 Pages) Infineon Technologies AG – Tracking Regulator

TLE 4252
Application Information
V_BAT
I ^{MainµCSupply} Q
e.g.
TLE 4271-2
TLE 4278
TLE 4470
etc.
GND
R_1ADJ
V_DD
µC
e.g. C167
R_2ADJ
I/O
EN
4
ADJ
5
Q
V_Q< V_REF
TLE 4252 D
1
I
GND
AEA03535.VSD
Figure 3 Application Circuit: Output Voltage < Reference Voltage
Figure 3 shows a typical application circuit with V_Q < V_REF. Of course, also V_Q = V_REF is
feasible by directly connecting the reference pin of the TLE 4252 D to the appropriate
voltage level without voltage divider.
The output voltage calculates to:
V_Q
=
V_REF
×
⎛
⎝
-_R----₁--_A---_D-^R--_J--²--+-^A---^D-_R--^J--₂---_A---_D---_{J⎠⎞}
(1)
Data Sheet
8
Rev. 1.4, 2007-03-20