LP2953QML, LP2953QML-SP

SNVS395C – NOVEMBER 2010 – REVISED APRIL 2013

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380 mA (typical).

** Select R1 so that the comparator input voltage is 1.23V at the output voltage which corresponds to the desired fault

current value.

Figure 34. 5V Current Limiter with Load Fault Indicator

Figure 35. Low T.C. Current Sink

* Connect to Logic or

μP control inputs.

LOW BATT flag warns the user that the battery has discharged down to about 5.8V, giving the user time to recharge

the battery or power down some hardware with high power requirements. The output is still in regulation at this time.

OUT OF REGULATION flag indicates when the battery is almost completely discharged, and can be used to initiate a

power-down sequence.

Figure 36. 5V Regulator with Error Flags for

LOW BATTERY and OUT OF REGULATION

18

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