Data Sheet

2

Rev. 1.1, 2008-09-19

TLE 4473 GV53

TLE 4473 GV52

The low drop regulator features a reset with adjustable power on delay for each of the

outputs. In addition the output for the microcontroller supply comes up with a watchdog

in order to supervise a microcontroller.

Figure 1

Block Diagram with Typical External Components

AEB03507.VSD

TLE 4473 GV53 / TLE 4473 GV52

Reset

Generator

Reset

Generator

Watchdog

Current and

Saturation

Control,

Overcurrent

Protection

Overtemperature

Shutdown

Bandgap

Reference

Inhibit

Current and

Saturation

Control,

Overcurrent

Protection

Inhibit

10

µF

4.7 k

Ω

4

2

Q2

RO2

e. g. µC I/O

or Sensor

Supply

100 nF

10

D2

3

RO1

5

Q1

22 µF

or

10 µF

µC Core

Supply

µC

Reset

100 nF

11

D1

GND

6, 12

4.7 k

Ω

Ignition

µC

V

Bat

INH2

9

I

7

INH1

8

?1

1

WI

Watchdog

(from µC)