LP2953_15 Datasheet, PDF (29/41 Pages) Texas Instruments – LP295x Adjustable Micropower Low-Dropout Voltage Regulators

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LP2952-N, LP2952A, LP2953, LP2953A
SNVS095F – MAY 2004 – REVISED MARCH 2015
8.2.8 5-V Regulator With Error Flags for Low Battery and Out of Regulation With Snap-ON or Snap-OFF
Output
Figure 43 is the circuit as 5-V regulator with error flags for low battery and out of regulation with Snap-ON/Snap-
OFF output. It has the following features:
• Connect to logic or microprocessor control inputs.
• LOW BATT flag warns the user that the battery has discharged down to about 5.8 V, giving the user time to
recharge the battery or shutdown hardware with high power requirements. The output is still in regulation at
this time.
• OUT OF REGULATION flag goes low if the output goes below about 4.7 V, which could occur from a load
fault.
• OUTPUT has Snap-ON or Snap-OFF feature. Regulator snaps ON at about 5.7-V input, and OFF at about
5.6 V.
Figure 43. 5-V Regulator With Error Flags for Low Battery and Out of Regulation With Snap-ON or Snap-
OFF Output
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Product Folder Links: LP2952-N LP2952A LP2953 LP2953A