tle4276-2 Infineon Technologies Corporation, tle4276-2 Datasheet - Page 10

• Manufacturer Part Number: tle4276-2
• Description: Low Drop Voltage Regulator
• Manufacturer: Infineon Technologies Corporation

Application Information for Variable Output Regulator TLE 4276-2 DV, GV
The output voltage of the TLE 4276-2 DV, GV 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
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 4276-2 DV, GV is
internal biasing 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
Q
ref
2
< 50 kΩ
= (
is typically 2.5 V.
R
R
2
1
according to
+
Internal
Reference
2.5 V Typical
R
2
)/
Application Detail External Components at Output for Variable
Voltage Regulator
R
2
×
V
ref
Equation
V
, neglecting
ref
V
R
Q
1
(2):
and
I
VA
R
2
add an additional error to the output voltage
10
I
Saturation
VA
Equation
Current
Control
, we recommend to choose the resistor
and
(1):
5
4
Q
VA
V
Q
+ 0.5 V to 40 V. For
R
R
1
2
Rev. 1.1, 2007-09-21
AEB02804
TLE 4276-2
C
22 µF
Q
(1)
(2)