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1FEATURES

23? 90% Efficiency at 6MHz Operation

? 31mA Quiescent Current

? Wide V IN Range From 2.3V to 5.5V

? 6MHz Regulated Frequency Operation

? Best in Class Load and Line Transient

? ±2% Total DC Voltage Accuracy

? Automatic PFM/PWM Mode Switching

? Low Ripple Light-Load PFM Mode

? >50dB VIN PSRR (1kHz to 10kHz)

? Internal Soft-Start, 100-ms Start-Up Time

? Integrated Active Power-Down Sequencing

(Optional)

? Three Surface-Mount External Components

Required (One 0603 MLCC Inductor, Two 0402

Ceramic Capacitors)

? Complete Sub 0.4-mm Component Profile

Solution

? Total Solution Size <10 mm2

? Available in a 6-Pin NanoFree? (CSP)

Ultra-Thin Packaging

APPLICATIONS

? Cell Phones, Smart-Phones

? WLAN, GPS and Bluetooth? Applications

? DTV Tuner Applications

? DC/DC Micro Modules

DESCRIPTION

The TPS6261x device is a high-frequency

synchronous step-down dc-dc converter optimized for

battery-powered portable applications. Intended for

low-power applications, the TPS6261x supports up to

350-mA load current, and allows the use of low cost

chip inductor and capacitors.

With a wide input voltage range of 2.3V to 5.5V, the device supports applications powered by Li-Ion

batteries with extended voltage range. Different fixed

voltage output versions are available from 1.2V to

2.3V.

The TPS6261x operates at a regulated 6-MHz

switching frequency and enters the power-save mode

operation at light load currents to maintain high

efficiency over the entire load current range.

The PFM mode extends the battery life by reducing

the quiescent current to 31mA (typ) during light load

operation. For low-frequency noise-sensitive

applications, the device can be forced into fixed

frequency PWM mode by pulling the MODE pin high.

These features, combined with high PSRR and AC

load regulation performance, make this device

suitable to replace a linear regulator to obtain better

power conversion efficiency.

The TPS6261x is available in an 6-pin thin chip-scale

package (CSP, 0.4mm max. height).