Texas Instruments TPS76933, Руководство пользователя

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1-1 Introduction
Introduction
This user’s guide describes techniques for designing low dropout (LDO)
voltage linear regulators using TI’s SLVP125 evaluation module (EVM) and
TPS76933 LDO. LDOs provide ideal power supplies for rapidly transitioning
DSP loads such as the Texas Instruments TMS320C54x and similar
processors, and fast memory. Low quiescent current and very low dropout
voltage compared to standard LDOs makes the TPS76933 particularly
suitable in battery applications requiring extended lifetime and low cost.
Low noise power supplies, fast transient response, improved efficiency, low
component count, and easy design make LDOs popular in solutions where
switched converters are too noisy and standard linear regulators are too
inefficient.
Topic Page
1.1 Low Dropout Voltage Linear Regulator Circuit Operation 1–2 . . . . . . . . .
1.2 Design Strategy 1–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Schematic 1–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Bill of Materials 1–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Board Layout 1–8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1