TLE4276DV50 Infineon Technologies AG, TLE4276DV50 Datasheet - Page 10

• Manufacturer Part Number: TLE4276DV50
• Description: Low-Drop Voltage Regulator
• Manufacturer: Infineon Technologies AG

Application Information for Variable Output Regulator TLE 4276 V, SV, DV, GV
The output voltage of the TLE 4276 V can be adjusted between 2.5 V and 20 V by an
external output voltage divider, closing the control loop to the voltage adjust pin VA.
The voltage at pin VA is compared to the internal reference of typical 2.5 V in an error
amplifier. It controls the output voltage.
Figure 5
The output voltage is calculated according to Equation 1:
V
V
To avoid errors caused by leakage current
value
R
For a 2.5 V output voltage the output pin Q is directly connected to the adjust pin VA.
The accuracy of the resistors
tolerance.
The operation range of the variable TLE 4276 V is
a minimum input voltage of 4.3 V is required. For output voltages below 4 V the voltage
drop is 4.3 V –
Data Sheet Version 2.2
Q
ref
2
< 50 k
= (
is typically 2.5 V.
R
R
1
2
+
according to Equation 2:
τ
Internal
Reference
2.5 V Typical
R
2
)/
Application Detail External Components at Output for Variable
Voltage Regulator
R
V
2
Q
⌠ V
ref
, neglecting
V
ref
R
1
and
I
VA
R
2
add an additional error to the output voltage
10
I
Saturation
VA
Current
Control
, we recommend to choose the resistor
and
V
Q
+ 0.5 V to 40 V. For internal biasing
5
4
Q
VA
R
R
1
2
AEB02804
C
22 µF
TLE 4276
Q
2000-10-11
(1)
(2)