MPQ8873集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

MPQ8873屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由美國芯源系統(tǒng)有限公司制造生產(chǎn)的MPQ8873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)備提供的電力會通過該元件。

DESCRIPTION

The MPQ8873 is a 36V, monolithic,

synchronous buck-boost DC/DC converter. Its

wide 2.2V to 36V input voltage range makes the

device well-suited to multi-purpose automotive

and industrial applications. Proprietary

constant-on-time (COT) control and a fully

integrated, four-switch configuration allow the

chip to flexibly change the converter topology

between buck, boost, and buck-boost mode.

This optimizes performance and efficiency at

input voltages above, below, or equal to the

output voltage. It also ensures seamless

transitions between the adjacent operational

regions.

The MPQ8873 is controlled via a standard I

2C

interface. The various parameters can be

adjusted by writing the settings in the device,

meaning that no hardware changes are

required.

The switching frequency can be configured

between 200kHz and 1MHz, or it can be

synchronized between 250kHz and 1MHz via

an external clock signal. In addition, the

configurable frequency spread spectrum

function can dither the switching frequency

periodically for improved EMI performance.

Robust fault protections include input undervoltage lockout (UVLO), input over-voltage

protection (OVP), cycle-by-cycle peak current

limiting, output OVP, output short-circuit

protection (SCP), and thermal shutdown. The

built-in power good function can indicate

whether the output voltage is regulated

properly.

The MPQ8873 is available in a thermally

enhanced QFN-34 (4mmx5mm) package.

FEATURES

? 2.2V to 36V Wide Input Voltage Range

? Up to 3A Continuous Output Current

? <25μA Shutdown Current

? 180μA Quiescent Current when VIN = 12V

? Single-Channel, Four-Switch, Synchronous

Buck-Boost Configuration:

o Internal 10mΩ Buck High-Side Power

MOSFET

o Internal 25mΩ Buck Low-Side

Synchronous Rectifier

o Internal 10mΩ Boost Low-Side Power

MOSFET

o Internal 25mΩ Boost High-Side

Synchronous Rectifier

? Proprietary Constant-On-Time (COT)

Control for Seamless Transitions

? Internal Soft Start

? Smart Power Good Output

? Easy-to-Optimize Efficiency and EMI

Performance:

o Configurable 200kHz to 1MHz Switching

Frequency

o Synchronizable Switching Frequency

from 250kHz to 1MHz

o Switching Frequency Spread Spectrum

o Configurable Switching Speed

? Protection Features:

o Cycle-by-Cycle Current Limiting

o Over-Current Protection (OCP)

o Configurable Input Under-Voltage

Lockout (UVLO)

o Output Over-Voltage Protection (OVP)

o Input Over-Voltage Protection (OVP)

o Output Short-Circuit Protection (SCP)

o Over-Temperature Shutdown