Introduction

ROHM CMOS LDO Regulators

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ROHM CMOS LDO (low drop-out) regulators are tailored for use in portable devices such as PDAs, mobile phones, digital cameras and camcorders. Lower in cost and small in packaging, ROHM CMOS LDOs offer designers a superior alternative to PWM regulators in many point-of-load regulation applications. Depending on the particular model series, these fixed-output devices offer a selection of output voltages ranging from 1.2 V to 3.4 V. All ROHM CMOS LDOs feature power-saving shutdown capability and all are compatible with space-saving ceramic capacitors. A selection of single-output and triple-output devices is available offering designers the features and the performance desired for the specific tasks, such as:

• high ripple rejection for analog signal and RF circuits
• high-speed load regulation for logic circuits.

ROHM CMOS LDOs are available in very small surface mount packages as well as ultra-small chip-scale units that offer power dissipation performance matching that of much larger devices.