LV5068V中文资料Non-Synchronous Buck Controller, Switching, 1-Channel数据手册ONSEMI规格书

描述 Description

The LV5068V is a Non-Synchronous Buck Controller, designed to operate from a wide range of input voltages (4.5 V to 40 V) and to exhibit very low current consumption under light load (55 uA typ). The LV5068 is extremely flexible and allows the designer to set the switching frequency (300 kHz to 2.2 MHz), the current limit and a soft-start through an external capacitor. In addition, the device may be synchronised with an external signal. The LV5068Vincorporates output voltage monitoring with a PowerGood pin, and rotection features include built-in overcurrent protection, input undervoltage lockout as well as thermal shutdown capability. The LV5068V is available in a 16-pin SSOP package.

特性 Features

• Maximum value of light load mode current is 80uA.
• Enhanced efficiency at lower output current
• Built-in OCP circuit with P-by-P method
• Protects against over current conditions
• When P-by-P is generated continuously, it shifts to the HICCUP operation. If connect C-HICCUP to GND pin, then latch-off when over current.
• Allows for selectable protection
• The oscillatory frequency can be set by the external pin. The oscillatory frequency is 300 kHz to 2.2MHz
• Allows for design flexibility
• Built-in UVLO, TSD
• Protection feature
• The device is capable of Synchronous operation with an external signal
• Allows for frequency synchronization

应用 Application

• Power Supply for standby uControllers
• Set-Top box, DVD players, HDD
• Printers
• LCD monitors and TV

简介

LV5068V属于集成电路（IC）的DC-DC开关控制器。由制造生产的LV5068VDC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。