Data Sheet

ADP3303

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.

COPPER PADDLE

1

2

3

4

8

7

6

5

COPPER

LEAD-FRAME

Rev. C | Page 11 of 16