LP3872_16 Datasheet, PDF (10/28 Pages) Texas Instruments – 1.5-A Fast Ultra-Low-Dropout Linear Regulators

LP3872, LP3875
SNVS227H – FEBRUARY 2003 – REVISED JANUARY 2015
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Device Functional Modes (continued)
The internal ERROR flag comparator has an open-drain output stage. Hence, the ERROR pin should be pulled
high through a pullup resistor. Although the ERROR flag pin can sink current of 1 mA, this current is energy drain
from the input supply. Hence, the value of the pullup resistor should be in the range of 10 kΩ to 1 MΩ. The
ERROR pin must be connected to ground if this function is not used. It should also be noted that when the SD
pin is pulled low, the ERROR pin is forced to be invalid for reasons of saving power in shutdown mode.
Figure 11. ERROR Flag Operation
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