Datasheet

Data Sheet ADP3303
Rev. D | Page 11 of 16
COPPER PADDLE
1
2
3
4
8
7
6
5
COPPER
LEAD-FRAME
10335-024
Figure 24. Thermal Coastline
ERROR FLAG DROPOUT DETECTOR
The ADP3303 maintains its output voltage over a wide range of
load, input voltage and temperature conditions. If, for example,
the output is about to lose regulation by reducing the supply
voltage below the combined regulated output and drop-out
voltages, the
ERR
flag is activated. The
ERR
output is an open
collector, which is driven low.
Once set, the hysteresis of the
ERR
flag keeps the output low
until a small margin of operating range is restored either by
raising the supply voltage or reducing the load.
SHUTDOWN MODE
Applying a TTL high signal to the shutdown (
SD
) pin, or tying
it to the input pin, turns the output on. Pulling
SD
down to 0.3 V
or below, or tying it to ground, turns the output off. In shutdown
mode, quiescent current is reduced to much less than 1 µA.
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