A6984集成電路（IC）的穩(wěn)壓器-DC-DC開(kāi)關(guān)穩(wěn)壓器規(guī)格書(shū)PDF中文資料

A6984屬于集成電路（IC）的穩(wěn)壓器-DC-DC開(kāi)關(guān)穩(wěn)壓器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的A6984穩(wěn)壓器 - DC-DC 開(kāi)關(guān)穩(wěn)壓器DC-DC 開(kāi)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(jí)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(chēng)為“控制器”P(pán)MIC 的類(lèi)似產(chǎn)品的區(qū)別在于集成了主開(kāi)關(guān)元件，設(shè)備提供的電力會(huì)通過(guò)該元件。

Description

The A6984 is a step-down monolithic switching

regulator able to deliver up to 400 mA DC. The

output voltage adjustability ranges from 0.9 V. The

fixed 3.3 V VOUT requires no external resistor

divider. The “l(fā)ow consumption mode” (LCM) is

designed for applications active during car

parking, so it maximizes the efficiency at light load

with controlled output voltage ripple. The “l(fā)ow

noise mode” (LNM) makes the switching

frequency almost constant over the load current

range, serving low noise application

specifications such as car audio/sensors. The

PGOOD open collector output can implement

output voltage sequencing during the power-up

phase. The synchronous rectification, designed

for high efficiency at medium-heavy load, and the

high switching frequency capability make the size

of the application compact. Pulse-by-pulse

current sensing on the low-side power element

implements effective constant current protection.

The package lead finishing guarantees side

solderability, thus allowing visual inspection

during manufacturing.

Features

? AEC-Q100 qualified

? 400 mA DC output current

? 4.5 V to 36 V operating input voltage

? Synchronous rectification

? Low consumption mode or low noise mode

? 100 μA IQ at light load (LCM VOUT = 3.3 V)

? 13 μA IQ-SHTDWN

? Adjustable fSW (250 kHz - 600 kHz)

? Output voltage adjustable from 0.9 V

? No resistor divider required for 3.3 V VOUT

? VBIAS maximizes efficiency at light load

? 350 mA valley current limit

? Constant on-time control scheme

? PGOOD open collector

? Thermal shutdown

Applications

? Car body and ADAS applications (LCM)

? Car audio and low noise applications (LNM)