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1 Features

1? Wide Input Voltage Range from 1.8 V to 5.5 V

? Regulated 2.7-V, 3-V, 3.3-V or 5-V Output Voltage

With ±2.5% Accuracy Over Load

? Up to 25-mA Output Current

? 170-μVrms Zero Ripple Output:

at 20 Hz to 10 MHz Bandwidth

? Up to 90% Efficiency

? Minimum Number of External Components

– No Inductors

– Only Small Ceramic Chip Capacitors

? Shutdown Mode: 0.1 μA Typical

? Thermal Protection and Current Limit

? Micro-Small 8-Pin VSSOP Package surface?

EVM Available TPS60241EVM-194

2 Applications current?

VCO and PLL Power for:

– Smart Phones

– Mobile Phones

– PCMCIA Modems

? Smartcard Readers

? Digital Cameras

? MP3 Players

? SIM Modules

? Electronic Games

? Memory Backup

? Handheld Meters

? Bias Supplies

3 Description

The TPS6024x devices are a family of switched

capacitor voltage converters, ideally suited for voltage-controlled oscillator (VCO) and phase-locked

loop (PLL) applications that require low noise and

tight tolerances. Its dual-cap design uses four

ceramic capacitors to provide ultra-low output ripple

with high efficiency, while eliminating the need for

inefficient linear regulators.

The TPS6024x devices operate down to 1.8 V,

supporting a 3.3-V, 2.7-V, 3-V output from two-cell,

nickel- or alkaline-based chemistries, whereas the

TPS60241 works with 2.7-V to 5.5-V input voltage

providing a 5-V output. The devices work equally well

for low EMI DC–DC step-up conversion without the need for an inductor. The high switching frequency

(typical 160 kHz) promotes the use of small surface?

mount capacitors, saving board space. The shutdown

mode of the converter conserves battery energy.

The devices are thermally protected and current?

limited for reliable operation even under persisting

fault conditions. Normal quiescent current (ground pin current) is only 250 μA, and typically 0.1 μA in

shutdown mode. The TPS6024x devices come in a

thin, 8-pin VSSOP package with a component height

of only 1.1 mm.