LX1672-05CPW集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器規(guī)格書PDF中文資料

LX1672-05CPW屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器。由美高森美公司制造生產(chǎn)的LX1672-05CPWDC-DC 開關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。

DESCRIPTION

The LX1672 is a highly integrated power supply controller IC featuring two PWM switching regulator stages with an additional onboard linear regulator driver.

The two constant frequency voltagemode PWM phases can be easily configured as a single Bi-Phase high current output, two independently regulated outputs, or as a DDR memory I/O supply with a tracking DDR termination voltage supply. Power loss and noise, due to the ESR of the input capacitors, are minimized by operating each PWM output 180° out of phase. This architecture also minimizes capacitor requirements while maximizing regulator response.

KEY FEATURES

? Up to Three Independently Regulated Outputs

? DDR Termination Compliant

? Bi-phase Current Sharing

? Outputs As Low As 0.8V Generated From An Internal 1 Reference

? Multiphase High Current Output Reduces Required Capacitance

? Integrated High Current MOSFET Drivers

? 300KHz, 500KHz and 600KHz High Frequency Operation Minimizes External Component Requirements

? Independent Phase Programmable Soft-Start and Power Sequencing

? Adjustable Linear Regulator Driver Output

? No current-sense resistors

APPLICATIONS/BENEFITS

? Multi-Output Power Supplies

? Video Card Power Supplies

? DDR, VDDQ and Termination Supply

? PC Peripherals

? Portable PC Processor and I/O Supply