Datasheet

LM3411
www.ti.com SNVS113E –DECEMBER 1999–REVISED APRIL 2013
Figure 33. 250 mA Shunt Regulator
Perhaps one of the simplest applications for the LM3411 is the voltage detector circuit shown in Figure 34 . The
OUT pin is low when the input voltage is less than V
REG
. When the V(IN) pin rises above V
REG
, the OUT pin is
pulled high by the internal NPN output resistor.
Figure 34. Voltage Detector
Also an overvoltage detector, the crowbar circuit shown in Figure 35 is normally located at the output of a power
supply to protect the load from an overvoltage condition should the power supply fail with an input/output short.
Figure 35. Overvoltage Crowbar
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