Data Sheet

17

Rev. 1.2, 2009-11-18

TLE4254

Application Information

Figure 7

Application circuit: Output voltage

V

only)

For output voltages higher than the reference voltage, the voltage divider has to be applied between the feedback

and the output according to Application circuit: Output voltage VQ higher than reference voltage VREF

(version GA / EJ A only). 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

V

for

R2

4

ADJ

IFB

Q

EN/

GND

TLE4254GA

TLE4254EJ A

8

2, 3, 6, 7

5

1

VDD

I/O

IQ

GND

VBAT

VQ > VREF

VREF

micro controller

e.g.

C167,

XC16X

TC17xx

Main µC supply

e.g.

TLE4271-2

TLE4471

TLE6368...

+

---------------------------------





⋅

=

–

---------------------------





⋅

=