General Description

The MIC5253 is an efficient, CMOS voltage regulator optimized for ultra-low-noise applications. It offers 1.5 initial accuracy, extremely low dropout voltage (165mV at 100mA), and low ground current (typically 95μA at full load). The MIC5253 provides a very low noise output, ideal for RF applications where a clean voltage source is required. A noise bypass pin is also available for further reduction of output noise.

Features

? Input voltage range: 2.7V to 5.5V

? Teeny? SC-70-5 package

? Ultra-low output noise: 30μV(rms)

? 100mA continuous output current, 150mA peak current

? Stability with ceramic output capacitors

? Ultralow dropout: 165mV @ 100mA

? High output accuracy:

1.5 initial accuracy

3.0 over temperature

? Low ground current: 95μA

? TTL-Logic-controlled enable input

? “Zero” off-mode current

? Thermal shutdown and current limit protection

Applications

? Cellular phones and pagers

? Cellular accessories

? Battery-powered equipment

? Laptop, notebook, and palmtop computers

? Consumer/personal electronics