TLE 4254GS Infineon Technologies, TLE 4254GS Datasheet - Page 16

• Manufacturer Part Number: TLE 4254GS
• Manufacturer: Infineon Technologies

Specifications of TLE 4254GS

• Packages: PG-DSO-8
• Regulator Type: tracker
• Output Voltage: adj.
• Accuracy: 0.1 %
• Max. Output Current: 70mA
• Dropout Voltage: 200mV

Figure 6
In order to obtain a lower output voltage
according to
feedbacked to microcontroller (version GS / EJ S)
With a given reference voltage
for
Taking into consideration also the effect of the internal EN/ADJ pull-down resistor, the external resistor divider’s
R2
Data Sheet
ADJ
R2
ADJ
has to be selected to:
VBAT
is given by:
Application circuit: Output voltage
Status Output feedbacked to microcontroller (version GS / EJ S)
Application circuit: Output voltage VQ lower than reference voltage VREF Status Output
I
V
REF
Main µC supply
TLE4271-2
TLE6368...
, the desired output voltage
TLE4471
e.g.
R2
GND
V
ADJ select
R1
R2
Q
V
R2
at the tracker output than the reference voltage
ADJ
ADJ
Q
,
ADJ
=
Q
V
=
REF
=
VREF
V
R1


Q
--------------------------------------------------------- -
R
⋅
R2
ADJ
lower than reference voltage
has to be used. The output voltage


PullDown min
16
--------------------------------------- -
R1
5
8
ADJ
⋅
ADJ


EN/
ADJ
I
R2
---------------------------
V
⋅
R
REF
TLE4254EJ S
+
2, 3, 6, 7
ADJ
,
TLE4254GS
PullDown min
V
V
R2
Q
Q
–
–
ADJ
GND
V
and the resistor value
R2
Q




,
ADJ


ST
Q
VDD
4
1
micro controller
I/O
TC17xx
V
XC16X
C167,
Application Information
e.g.
REF
R1
V
I/O
V
Q
Rev. 1.2, 2009-11-18
ADJ
REF
then calculates:
, the resistor value
, a voltage divider
VQ < VREF
TLE4254