描述 Description

The device is a DC-DC monolithic regulator specifically designed to provide high efficiency. The L6928 supply voltage can be as low as 2 V to be used in single Li-Ion cell supplied applications. Output voltage can be selected by an external divider down to 0.6 V. Duty cycle can saturate 100% allowing low-dropout operation. The device is based on a 1.4 MHz fixed frequency, current mode architecture. Low consumption mode operation can be selected at light load conditions, allowing switching losses to be reduced. The L6928 is externally synchronized by a clock, which makes it useful in noise sensitive applications. Other features like Power Good, overvoltage protection, short-circuit protection and thermal shutdown (150 °C) are also present.

特性 Features

? 2 V to 5.5 V battery input range
? High efficiency: up to 95%
? Internal synchronous switch
? No external Schottky diode required
? Extremely low quiescent current
? 1 μA max. shutdown supply current
? 800 mA max. output current
? Adjustable output voltage from 0.6 V
? Low-dropout operation: up to 100% duty cycle
? Selectable low noise/low consumption mode at light load
? Power Good signal
? ± 1% output voltage accuracy
? Current mode control
? 1.4 MHz switching frequency
? Externally synchronized from 1 MHz to 2 MHz
? OVP
? Short-circuit protection

簡介

L6928屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由制造生產(chǎn)的L6928穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(guān)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?qū)⑵滢D(zhuǎn)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(guān)元件，設備提供的電力會通過該元件。