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TLE42994V33 Datasheet(PDF) 14 Page - Infineon Technologies AG

Part # TLE42994V33
Description  Low Dropout Fixed Voltage Regulator
Download  25 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TLE42994V33 Datasheet(HTML) 14 Page - Infineon Technologies AG

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Data Sheet
14
Rev. 1.01, 2010-10-14
TLE42994V33
Block Description and Electrical Characteristics
5.5
Enable Function
5.6
Reset Function
The reset function provides several features:
Output Undervoltage Reset:
An output undervoltage condition is indicated by setting the Reset Output RO to “low”. This signal might be used
to reset a microcontroller during low supply voltage.
Power-On Reset Delay Time:
The power-on reset delay time
t
rd allows a microcontoller and oscillator to start up. This delay time is the time frame
from exceeding the reset switching threshold
V
RT until the reset is released by switching the reset output “RO” from
“low” to “high”. The power-on reset delay time
t
rd is defined by an external delay capacitor CD connected to pin D
charged by the delay capacitor charge current
I
D,ch starting from VD =0V.
If the application needs a power-on reset delay time
t
rd different from the value given in Item 5.6.9, the delay
capacitor’s value can be derived from the specified values in Item 5.6.9 and the desired power-on delay time:
with
CD: capacitance of the delay capacitor to be chosen
trd,new: desired power-on reset delay time
t
rd: power-on reset delay time specified in this datasheet
For a precise calculation also take the delay capacitor’s tolerance into consideration.
Electrical Characteristics Voltage Regulator
V
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.
5.5.1
Enable OFF Voltage Range
V
EN,OFF
––
0.8
V
5.5.2
Enable ON Voltage Range
V
EN,ON
3.5
V
5.5.3
Enable OFF Input Current
I
EN,OFF
–0.5
2
µA
V
EN =0V
5.5.4
Enable ON Input Current
I
EN,ON
–3
5
µA
V
EN =5V
CD
trd new
,
trd
---------------- 100nF
×
=


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