Data Sheet

21

Rev. 1.0, 2008-09-30

TLE4675

Reset Function

7.3

Typical Performance Characteristics Reset Function

Undervoltage Reset Switching Thresholds

V

Reset Delay Time

t

Delay Capacitor

C

D

7.2.15

Power-on Reset Delay

Time

t

d,PWR-ON,100nF

23

33

43

ms

Calculated value;

C

2)

C

7.2.16

Internal Reset Reaction

Time

t

rr,int

–10

15

µs

C

7.2.17

Delay Capacitor Discharge

Time

t

rr,d

–1

2

µs

C

7.2.18

Total Reset Reaction Time

t

rr,total

–11

17

µs

Calculated Value:

t

C

2)

1) Parameter not subject of production test.

2) For programming a different delay and reset reaction time, see Chapter 7.1 for calculation.

Electrical Characteristics: Reset Function (cont’d)

V

Pos.

Parameter

Symbol

Limit Values

Unit

Conditions

Min.

Typ.

Max.

-40

-20

20 40

80 100

VRT-Tj.v s d

4,9

4,8

4,7

5.0

060

140

120

Output Undervoltage

Reset Headroom

Pin RADJ = GND

10

100

1000

td -CD .v s d

100

10

1

[ms]