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LT8641ARUDCMTRPBF中文資料亞德諾數(shù)據(jù)手冊PDF規(guī)格書

LT8641ARUDCMTRPBF
廠商型號

LT8641ARUDCMTRPBF

功能描述

65V, 3.5A/5A Peak Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current

絲印標(biāo)識

LHTC

封裝外殼

QFN

文件大小

860.49 Kbytes

頁面數(shù)量

35

生產(chǎn)廠商 Analog Devices
企業(yè)簡稱

AD亞德諾

中文名稱

亞德諾半導(dǎo)體技術(shù)有限公司官網(wǎng)

原廠標(biāo)識
數(shù)據(jù)手冊

下載地址一下載地址二到原廠下載

更新時(shí)間

2025-1-29 23:00:00

LT8641ARUDCMTRPBF規(guī)格書詳情

GENERAL DESCRIPTION

The LT?8641A step-down regulator features Silent

Switcher architecture designed to minimize EMI

emissions while delivering high efficiency at frequencies

up to 3MHz. Assembled in a 3mm × 4mm side wettable

QFN, the monolithic construction with integrated power

switches and inclusion of all necessary circuitry yields a

solution with a minimal PCB footprint. An ultralow 2.5μA

quiescent current — with the output in full regulation —

enables applications requiring highest efficiency at very

small load currents. Transient response remains

excellent and output voltage ripple is below 10mVP-P at

any load, from zero to full current.

The LT8641A allows high VIN to low VOUT conversion at

high frequency with a fast minimum top switch on-time

of 35ns. Operation is safe in overload even with a

saturated inductor.

Essential features are included and easy to use: an opendrain

PG pin signals when the output is in regulation.

The SYNC/MODE pin selects between Burst Mode, pulseskipping,

or spread spectrum mode, and also allows

synchronization to an external clock. Soft-start and

tracking functionality are accessed through the TR/SS

pin. An accurate enable threshold can be set using the

EN/UV pin and a resistor at the RT pin programs switch frequency.

FEATURES

? Silent Switcher? Architecture

? Ultralow EMI Emissions

? Spread Spectrum Frequency Modulation

? High Efficiency at High Frequency

? Up to 95 Efficiency at 1MHz, 12VIN to 5VOUT

? Up to 94 Efficiency at 2MHz, 12VIN to 5VOUT

? Wide Input Voltage Range: 3V to 65V

? 3.5A Maximum Continuous, 5A Peak Transient

Output

? Ultralow Quiescent Current Burst Mode?

Operation

? 2.5μA IQ Regulating 12VIN to 3.3VOUT

? Output Ripple < 10mVP-P

? Fast Minimum Switch On-Time: 35ns

? True 2MHz Operation for 24VIN Systems

? Low Dropout Under All Conditions: 130mV at 1A

? Safely Tolerates Inductor Saturation in Overload

? Adjustable and Synchronizable: 200kHz to 3MHz

? Output Soft-Start and Tracking

? Small 18-Lead 3mm × 4mm Side Wettable QFN with Improved Solder Joint Reliability

? AEC-Q100 Qualified for Automotive Applications

APPLICATIONS

? Automotive and Industrial Supplies

? General Purpose Step-Down

供應(yīng)商 型號 品牌 批號 封裝 庫存 備注 價(jià)格
LINEAR/凌特
23+
NA/
3587
原裝現(xiàn)貨,當(dāng)天可交貨,原型號開票
詢價(jià)
ADI/亞德諾
22+
QFN
100000
代理渠道/只做原裝/可含稅
詢價(jià)
ADI(亞德諾)/LINEAR
1921+
QFN-18
3575
向鴻倉庫現(xiàn)貨,優(yōu)勢絕對的原裝!
詢價(jià)
LT
QFN
68900
原包原標(biāo)簽100%進(jìn)口原裝常備現(xiàn)貨!
詢價(jià)
Analog
21+
25000
原廠原包 深圳現(xiàn)貨 主打品牌 假一賠百 可開票!
詢價(jià)
ADI/亞德諾
22+
QFN-18
13000
原裝正品
詢價(jià)
6000
詢價(jià)
ADI/亞德諾
22+
QFN-18
9600
原裝現(xiàn)貨,優(yōu)勢供應(yīng),支持實(shí)單!
詢價(jià)
LINEAR
22+
QFN-18
10000
原裝正品優(yōu)勢現(xiàn)貨供應(yīng)
詢價(jià)
ADI/亞德諾
2021+
SMD
100500
一級代理專營品牌!原裝正品,優(yōu)勢現(xiàn)貨,長期排單到貨
詢價(jià)