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TLF4949 Datasheet(PDF) 18 Page - Infineon Technologies AG

Part # TLF4949
Description  5V Low Drop Out Linear Voltage Regulator
PDF  23 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TLF4949 Datasheet(HTML) 18 Page - Infineon Technologies AG

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Data Sheet
18
Rev. 1.0, 2012-05-07
TLF4949
Application Information
Figure 8
Reset Circuit
The reaction time of the reset circuit corresponds to its noise immunity. Standby output voltage drops below the
reset threshold that are only marginally longer than the reaction time will result in a shorter reset delay times.
The nominal reset delay time will be generated for standby output voltage drops longer than approximately 50µs.
The typical reset output waveforms are shown in Figure 9 “Typical Reset Output Waveforms” on Page 18.
Figure 9
Typical Reset Output Waveforms
Reset .vsd
OUT
Ref 1,23V
22K
2.0V
Reset
2uA
D
VReg
Reset _diagram.vsd
OUT
t
1.5V
5.0V
40V
VRT
VIN
VOUT
tRD
tRR
tRD
Reset
VRT + 0.1V
tR
Switch on
Switch off
Input drop
Dump
Output overload



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