Data Sheet

17

Rev. 1.2, 2009-11-09

TLE4253

Application Information

Figure 4

Application circuit: Output voltage

V

In order to obtain a lower output voltage

V

according to Figure 4 has to be used. The output voltage

V

With a given reference voltage

V

for

R2

Taking into consideration also the effect of the internal EN/ADJ pull-down resistor, the external resistor divider’s

R2

EN/

ADJ

I

Q

GND

TLE 4253 G

8

5

1

µC, e.g. C167

VDD

I/O

Main µC supply, e.g.

TLE4271-2

TLE4278

TLE4470

etc.

IQ

GND

VBAT

VQ < VREF

R1

ADJ

R2

ADJ

VREF

FB

4

2, 3, 6, 7

+

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





⋅

=

–

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





⋅

=

,

,

⋅

,

–

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





=