描述 Description

The uP8806J is an ultra low noise, fast response, high powersupply rejection ratio (PSRR) low dropout regulatorspecifically designed to continuously deliver up to 300mAoutput current. Designed with a P-channel MOSFET seriespass transistor, the uP8806J yields extremely low dropoutvoltage (e.g. 300mV at 300mA).

The uP8806J does not require a bypass capacitor, henceachieving the smallest PCB area. This device reducesoutput voltage noise under 70uV(RMS) and improves PSRRto 40dB at 100kHz.

The uP8806J is designed and optimized to work with lowvalue,low-cost ceramic capacitors. Only a 1uF ceramicoutput capacitor is required for stable operation for any loadconditions.

Other features include foldback overcurrent protection, quicksoft start, and over temperature protection. The uP8806Jis available in fixed output voltage from 0.8V to 4.75V with0.1V per step.

The device comes in UTDFN1x1 - 4L package.

特性 Features

? Wide Input Voltage Range from 2.4 to 5.5V
? Ultra Low Dropout Voltage: 300mV @ 300mA
? High Power Supply Rejection Ratio Up to 74dB @1kHz
? Ultra Fast Response in Line/Load Transient
? Stable with 1uF Ceramic Output Capacitor
? Low Shutdown Current: < 1uA
? Foldback Output Current Limit
? High Output Accuracy
? 1.5% Initial Accuracy
? Fixed Output Voltages: 0.8V to 4.75V with 0.1V Per Step

? Over Temperature Protection
? RoHS Compliant and Halogen Free

應(yīng)用 Application

? Cellular and Cordless Phones
? Bluetooth Portable Radios and Accessories
? Battery-Powered Equipment
? Laptop, Palmtops, Notebook Computers
? Hand-Held Devices
? PCMCIA Cards
? Portable Information Appliances