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TS4268CS50 датащи(PDF) 5 Page - Taiwan Semiconductor Company, Ltd

номер детали TS4268CS50
подробное описание детали  180mA Ultra Low Dropout Voltage Regulator with Reset & Watchdog Function
PDF  7 Pages
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производитель  TSC [Taiwan Semiconductor Company, Ltd]
домашняя страница  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

TS4268CS50 датащи(HTML) 5 Page - Taiwan Semiconductor Company, Ltd

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Preliminary
TS4268
180mA Ultra Low Dropout Voltage Regulator
with Reset & Watchdog Function
5/7
Version: Preliminary
Test Circuit
Reset Timing
The power-on reset delay time is defined by charging time of an external capacitor CD which can be calculated as
follow:
CD = ( ∆trd x ID,C ) / ∆V
Definitions:
CD = delay capacitor
∆trd = delay time
ID,C = charge current, typical 12uA
∆V = VDU, typical 1.8 V
VDU = upper delay switching threshold at CD for reset delay time
The reset reaction time trr is the time it takes the voltage regulator to set the reset out LOW after the output voltage has
dropped below the reset threshold. It is typically 1uS for delay capacitor of 47nF. For other values for CD the reaction
time can be estimated using the following equation:
Trr ≈ 20 s/F x CD



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