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Features

3

Features

The design uses the following high-efficiency dc/dc converter with integrated FETs.

INPUT VOLTAGE

~3.3 V

INTEGRATION AND HIGH EFFICIENCY

(Without DVFS)

COMBINE RTC AND STATIC 1.2

Core 1.2 V at 600 mA

TPS62420 (DCDC1)

Static 1.2 V + VRTC at 251 mA

Static 1.8 V at 230 mA

TPS62420 (DCDC2)

Static 3.3 V at 115 mA

TPS71733 (DRV)

In the preceding table, VRTC is included in the STATIC12 (fixed 1.2 V) group.

TPS62420

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High efficiency – up to 95%

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VIN range From 2.5 V to 6 V

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Output current 600 mA and 1000 mA

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EasyScale™ optional 1-pin serial interface for dynamic output voltage adjustment

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Power-Save mode at light-load currents

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Available in a 10-pin QFN (3×3mm)

TPS71733

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150-mA low-dropout (LDO) regulator with enable

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

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Excellent load/line transient response

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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 in the data sheets.

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TPS62420, SLVS676

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TPS71733, SBVS068

3

SLVA343A – June 2009 – Revised May 2010

Medium Integrated Power Solution Using a Dual DC/DC Converter and an LDO

Copyright © 2009–2010, Texas Instruments Incorporated