LX7167集成電路（IC）的DCDC開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

LX7167屬于集成電路（IC）的DCDC開關(guān)穩(wěn)壓器。由美高森美公司制造生產(chǎn)的LX7167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(shè)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(yīng)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(shè)備提供的電力會(huì)通過該元件。

Description

LX7167 is a step-down PWM Switching Regulator

IC with integrated high side P-CH and low side NCH

MOSFETs. The IC operates using a hysteretic

control topology with a full load operating switching

frequency of 3MHz allowing small output filter

components while maintaining excellent dynamic

load response.

The operational input voltage range of LX7167 is

from 3V to 5.5V. The part has a Power Save Mode

(PSM) that automatically transitions between PWM

and PSM mode depending on the load current. This

allows the converter’s efficiency to remain high

when load current drops. There is a Power Good

function to indicate the status of the IC.

In the shutdown mode, the IC’s current consumption

is reduced to less than 1μA and the output capacitor

is discharged.

Other features of the part are: a) Cycle-by-cycle

current limit followed by HICCUP mode which

reduces the overall power dissipation of the internal

MOSFETs, b) thermal protection and internal digital

soft start.

The LX7167 is available in a 2mm x 2mm 8 pin

exposed pad DFN package.

Features

? 2.4A Step-down Regulator

? Operational Input Supply Voltage Range:

3V-5.5V

? Integrated PMOS and NMOS

? Load Current from Zero to 2.4A

? 3MHz Switching Frequency

? SKIP Pulse to Improve Light Load

Efficiency

? Input UVLO and OV Protection

? Enable Pin

? Power Good

? Internal Soft-start

? Cycle-by-Cycle Over Current Protection

? Hiccup Mode Operation Under FB UVLO

? RoHS Compliant for Pb Free

Applications

? HDD

? Set-Top Box

? LCD TV’s

? Notebook/Netbook

? Routers

? Video Cards

? PC Peripherals

? PoE Powered Devices Smart Phone