AAT3258
300mA LDO Linear Regulator with µP Reset
pulses. Figure 2 shows typical behavior of short
shorter (e.g., typically a transient of 100mV below
the reset threshold would have to be present for
more than 50µs to cause a reset). Immunity can be
increased by the addition of a small bypass capac-
itor of 0.1µF connected as closely to the VCC pin as
possible.
duration pulses versus RESET comparator over-
drive. As shown in the Maximum Transient
Duration vs. Reset Threshold Overdrive graph,
when the transient voltage becomes larger, the
time allowed before asserting a reset becomes
VCC
VCC
VDET
RESET
RESET
MR
0.1µF
µP
INPUT
GND
GND
Figure 2: Typical Behavior of Short Duration Pulses vs. RESET Comparator Overdrive.
14
3258.2006.03.1.6
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
