TLE42994 datasheet(22/30 Pages) INFINEON

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TLE42994

Block Description and Electrical Characteristics

Data Sheet

Rev. 1.1, 2009-05-19

Electrical Characteristics Reset Function

I = 13.5 V, -40 °C ≤ Tj ≤ 150 °C, all voltages with respect to ground, positive current flowing into pin

(unless otherwise specified)

Pos.

Parameter

Symbol

Limit Values

Unit

Conditions

Min.

Typ.

Max.

Output Undervoltage Reset

5.7.1

Default Output Undervoltage Reset

Switching Thresholds

4.5

4.65

4.8

Q decreasing

Output Undervoltage Reset Threshold Adjustment

5.7.2

Reset Adjust

Switching Threshold

RADJ,th

1.26

1.36

1.44

3.5 V

≤ VQ < 5 V

5.7.3

Reset Adjustment Range1)

RT is scaled linearly, in case the Reset Switching Threshold is modified

RT,range

3.50

–

4.65

–

Reset Output RO

5.7.4

Reset Output Low Voltage

RO,low

–0.1

0.4

1 V

≤ VQ ≤ VRT

no external

RO,ext

5.7.5

Reset Output Internal

Pull-up Resistor to

Ω

–

5.7.6

Optional Reset Output External

Pull-up Resistor to

RO,ext

5.6

–

Ω

≤ VQ ≤ VRT ;

RO ≤ 0.4 V

Reset Delay Timing

5.7.7

Delay Pin Output Voltage

––

–

5.7.8

Power On Reset Delay Time

D = 100 nF

Calculated Value:

rd = CD * VDU / ID,ch

5.7.9

Upper Delay

Switching Threshold

–

1.85

–

5.7.10

Lower Delay

Switching Threshold

–0.50

–

5.7.11

Delay Capacitor

Charge Current

D,ch

–8.0

–µA

D = 1 V

5.7.12

Delay Capacitor

Reset Discharge Current

D,dch

–

D = 1 V

5.7.13

Delay Capacitor

Discharge Time

rr,d

–

1.9

µs

Calculated Value:

rr,d = CD*(VDU -

DL)/ ID,dch

D = 100 nF

5.7.14

Internal Reset Reaction Time

rr,int

–

1420µs

D = 0 nF

2) parameter not subject to production test; specified by design

5.7.15

Reset Reaction Time

rr,total

–

15.9

µs

Calculated Value:

rr,total = trr,int + trr,d

D = 100 nF

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