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 k

Ω 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

10

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