描述 Description

The SC1563 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 500mA. Since it has superior dropout characteristics compared to regular LDOs, it can be used to supply 2.5V on motherboards or 2.8V on peripheral cards from the 3.3V supply with no heatsink. Additionally, the SC1563 has a shutdown pin to further reduce power dissipation while shut down. The SC1563 provides excellent regulation over variations in line, load and temperature.

A wide range of fixed output voltage options are available. In addition, the output voltage of every device can be adjusted between 1.2V and 4.8V using external resistors. The SC1563 comes in the space saving 5-pin SOT-23 package.

特性 Features

? 350mV dropout @ 500mA

? Designed to operate with ceramic capacitors

? Adjustable output from 1.2V to 4.8V

? Multiple output voltage options (all parts also adjustable externally using resistors)

? Over current and over temperature protection

? 2μA quiescent current in shutdown

? No minimum load current requirement

? Low reverse leakage (output to input)

? Full industrial temperature range

? 5-pin SOT-23 surface mount package. Also available in Lead-free, fully WEEE and RoHS compliant

Applications

? Personal Digital Assistants

? Battery powered systems

? Motherboards

? Peripheral cards

? PCMCIA cards