G2822ATB1U 1MHz3A同步降压调节器 致新原装

　　General Description

　　The G2822 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 50μA and drops to <1μA in shutdown. The 2.7V to 6.5V input voltage range makes the G2822 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery run time in portable systems. Switching frequency is internally set at 1MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increase efficiency and eliminates the need for an external Schottky diode. Built-in soft start function eliminates in-rush current that could damage the system.

　　Features

　　► High Efficiency: Up to 95%

　　► 50μA Operating Quiescent Current

　　► <1μA Shutdown Current

　　► Internal Soft Start Function

　　Output Current :

　　G2822T11U: 2A Continuous, 3A Peak

　　G2822TB1U: 2A Continuous, 3A Peak

　　G2822RC1U: 3A Continuous

　　► 2.7V to 6.5V Input Voltage Range

　　► 1MHz Switching Frequency

　　► No Schottky Diode Required

　　► 100% Duty Cycle in Dropout Operation

　　► 0.6V Reference Allows Low Output Voltages

　　► Over Temperature Protection

　　► Hiccup Short-Circuit Protection

　　► Output Discharge

　　► RoHS Compliant

　　Applications

　　► Cellular Telephones

　　► Personal Information Appliances

　　► Microprocessors and DSP Core Supplies

　　► Wireless and DSL Modems

　　► Digital Still and Video Cameras

　　► MP3 Players

　　► Portable Instruments