TLE4473GV53_08 datasheet(13/16 Pages) INFINEON

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TLE 4473 GV53

TLE 4473 GV52

Data Sheet

Rev. 1.1, 2008-09-19

Watchdog and Reset Timing D1 (cont’d)

Saturation Voltage

D1,SAT

100

Q1 < VRT2

Watchdog trigger

time

WI,tr

D1 = 100 nF

Reset delay time

RD1

D1 = 100 nF

Reset reaction time

–5.0

µs

D1 = 100 nF

Reset Output RO1

Reset switching

threshold

RT1

2.97

3.08

3.18

TLE 4473 GV53

2.34

2.42

2.50

TLE 4473 GV52

Reset threshold

headroom

R1HEAD

100

–

TLE 4473 GV53

Reset threshold

headroom

R1HEAD

–

TLE 4473 GV52

Reset output current I

RO1

–

1.4

Collector current of RO1,

power good, reset still

delayed.

Q1=3.30V

(TLE 4473 GV53),

Q1 =2.60V

(TLE 4473 GV52);

Q2=5.0 V;

D1=0 V,VRO1=0.3 V

Reset output low

voltage

RO1L

–0.1

0.3

≥ 1 V, V

D1=0V,

RO1=0.5mA

Reset output high

voltage

RO1H

2.45

–

RO1,ext=4.7kΩ connected

to Q1;TLE 4473 GV52

Reset output high

voltage

RO1H

3.15

–

RO1,ext=4.7kΩ connected

to Q1;TLE 4473 GV53

1) Drop voltage =

I – VQ (measured when the output voltage has dropped 100 mV from the nominal value

obtained at 13.5 V input)

Electrical Characteristics (cont’d)

I1 =13.5 V; VINH1 =VINH2= 5V; – 40 °C < Tj < 150 °C; unless otherwise specified

Parameter

Symbol

Limit Values

Unit

Test Condition

min.

typ.

max.

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