TLE 4253GS Infineon Technologies, TLE 4253GS Datasheet - Page 18

• Manufacturer Part Number: TLE 4253GS
• Manufacturer: Infineon Technologies

Specifications of TLE 4253GS

• Packages: PG-DSO-8
• Regulator Type: tracker
• Output Voltage: adj.
• Accuracy: 0.5 %
• Max. Output Current: 250mA
• Dropout Voltage: 280mV

Figure 5
For output voltages higher than the reference voltage, the voltage divider has to be applied between the feedback
and the output according to Figure 5. The equation for the output voltage with respect to the reference voltage is
given by:
Keep in mind that the input voltage has to be at minimum equal to the output voltage plus the dropout voltage of
the regulator.
With a given reference voltage
for
Data Sheet
R2
FB
is given by:
Application circuit: Output voltage
VBAT
V
REF
I
Main µC supply, e.g.
, the desired output voltage
TLE4271-2
TLE4278
TLE4470
etc.
GND
V
R2
Q
FB
=
Q
=
V
V
REF
VREF
R1
Q
FB
higher than reference voltage
⋅
18


5
8
⋅
R1
-------------------------------- -


---------------------------
V
EN/
ADJ
I
FB
R2
Q
TLE 4253 G
V
2, 3, 6, 7
+
–
REF
FB
V
R2
V
GND
REF
Q
FB
and the resistor value




FB
Q
VDD
1
4
I/O
µC, e.g. C167
R1
R2
FB
FB
V
Application Information
REF
R1
VQ > VREF
Rev. 1.2, 2009-11-09
FB
, the resistor value
TLE4253