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Features

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Features

The design uses the LDOs.

INPUT VOLTAGE

~3.3 V

Simple (no DVFS)

COMBINE RTC AND STATIC 1.2

Core 1.2 V at 600 mA

TPS74801

Static 1.2 V + VRTC at 251 mA

TPS74701

Static 1.8 V at 230 mA

TPS71718

Static 3.3 V at 115 mA

TPS74801

Here VRTC is included in the STATIC12 (fixed 1.2V) group.

TPS74801 and TPS74701

•

VOUT Range: 0.8 V to 3.6 V

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2% Accuracy Over Line/Load/Temperature

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Programmable Soft-Start Provides Linear Voltage Startup

•

Stable with Any Output Capacitor

≥ 2.2 mF

•

Available in a Small 3-mm × 3-mm × 1-mm SON-10 and 5 × 5 QFN-20 Packages

TPS71718

•

150-mA Low-Dropout Regulator with Enable

•

Low Noise: 30 mV typical (100 Hz to 100 kHz)

•

Excellent Load/Line Transient Response

•

Small SC70-5, 2-mm × 2-mm SON-6, and 1,5-mm × 1,5-mm SON-6 Packages

More information on the devices can be found from the data sheets.

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TPS74801, http://focus.ti.com/lit/ds/symlink/tps74801.pdf

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TPS74701, http://focus.ti.com/lit/ds/symlink/tps74701.pdf

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TPS71718, http://focus.ti.com/lit/ds/symlink/tps71718.pdf

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SLVA342A – June 2009 – Revised May 2010

Simple Power Solution Using LDOs

Copyright © 2009–2010, Texas Instruments Incorporated