AAT1145集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器規(guī)格書PDF中文資料

AAT1145屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器。由美國思佳訊公司制造生產(chǎn)的AAT1145穩(wěn)壓器 - DC-DC 開關穩(wěn)壓器DC-DC 開關穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設備，用于需要穩(wěn)定 DC 輸入電壓和/或將其轉換為不同幅度的輸出電壓的應用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關元件，設備提供的電力會通過該元件。

General Description

The AAT1145 SwitchReg? is a 1.2MHz constant frequency current mode PWM step-down converter. It is ideal for portable equipment requiring very high current up to 1.5A from single-cell Lithium-ion batteries while still achieving over 90 efficiency during peak load conditions. The AAT1145 also can run at 100 duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications.

Features

? Input Voltage Range: 2.5V to 5.5V

? Output Voltages from 0.6V to VIN

? 1.5A Output Current

? High Efficiency: Up to 95

? 1.2MHz Constant Switching Frequency

? Low RDS(ON) Internal Switches: 135mΩ, 95mΩ

? Allows Use of Ceramic Capacitors

? Current Mode Operation for Excellent Line and Load Transient Response

? Short-Circuit and Thermal Fault Protection

? Soft Start

? Low Dropout Operation: 100 Duty Cycle

? Low Shutdown Current: ISHUTDOWN < 1μA

? TDFN33-10 Package

? -40°C to +85°C Temperature Range

Applications

? Cellular Phones

? Digital Cameras

? DSP Core Supplies

? PDAs

? Portable Instruments

? Smart Phones