uP8806PQ数据手册uPI(UBIQ)中文资料规格书

描述 Description

The uP8806P/Q is an ultra low noise, fast response, highpower supply rejection ratio (PSRR) low dropout regulatorspecifically designed to continuously deliver up to 300mAoutput current. Designed with a P-channel MOSFET seriespass transistor, the uP8806P/Q yields extremely low dropoutvoltage (e.g. 300mV at 300mA).

The uP8806P/Q 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 uP8806P/Q is designed and optimized to work withlow-value, 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 overtemperature protection. The uP8806P/Q is available in fixed output voltage from 0.8V to 4.75Vwith 0.1V per step. The device comes in (T)SOT23-3L/5L,SOT223-3L, SOT89-3L and TO252-3L packages.

特性 Features

• Wide Input Voltage Range from 2.4 to 6V
• 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

应用 Application

• Cellular and Cordless Phones
• Bluetooth Portable Radios and Accessaries
• Battery-Powered Equipment
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• PCMCIA Cards
• Portable Information Appliances