LP3961_15 Datasheet, PDF (10/31 Pages) Texas Instruments – LP396x 800-mA Fast Ultra-Low-Dropout Linear Regulators

LP3961, LP3964
SNVS056J – MAY 2000 – REVISED JUNE 2015
7 Detailed Description
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7.1 Overview
The LP3961/LP3964 are a series of ultra-low dropout linear regulators. Fixed output products have output
voltage options from 1.2 V to 5 V, adjustable output voltage is only available for LP3964. These regulators can
provide maximum 800-mA load current. The device can operate under extremely low dropout conditions.
The LP3961 has an ERROR flag pin, this pin will go low when the output voltage drops 10% below nominal
value. The LP3964 (fixed output products) provides a SENSE pin. The SENSE pin can improve regulation at
remote loads. The LP3961, LP3964 also provide short-circuit protection and reverse current path. The devices
can be operated with shutdown (SD) pin control.
7.2 Functional Block Diagram
Figure 17. LP3961 Block Diagram
Figure 18. LP3964 Block Diagram
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