LT8640A中文資料亞德諾數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)
| 廠商型號(hào) |
LT8640A |
| 功能描述 | 65V, 3.5A/5A Peak Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current |
| 文件大小 |
860.49 Kbytes |
| 頁(yè)面數(shù)量 |
35 頁(yè) |
| 生產(chǎn)廠商 | Analog Devices |
| 企業(yè)簡(jiǎn)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(shí) |  |
| 數(shù)據(jù)手冊(cè) | |
| 更新時(shí)間 | 2025-2-5 11:43:00 |
LT8640A規(guī)格書(shū)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(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
LINEAR/凌特 |
2324+ |
NA |
78920 |
二十余載金牌老企,研究所優(yōu)秀合供單位,您的原廠窗口 |
詢價(jià) | ||
ADI/亞德諾 |
23+ |
TUBE |
3000 |
只做原裝正品,假一賠十 |
詢價(jià) | ||
LINEAR/凌特 |
22+ |
MSOP-16 |
9600 |
原裝現(xiàn)貨,優(yōu)勢(shì)供應(yīng),支持實(shí)單! |
詢價(jià) | ||
LINEAR/凌特 |
23+ |
MSOP-16 |
6600 |
一級(jí)代理原廠VIP渠道,專注軍工、汽車、醫(yī)療、工業(yè)、 |
詢價(jià) | ||
LINEAR |
1725+ |
QFN |
6528 |
只做原裝正品現(xiàn)貨或訂貨!假一賠十! |
詢價(jià) | ||
LINEAR/凌特 |
20+ |
QFN18 |
880000 |
明嘉萊只做原裝正品現(xiàn)貨 |
詢價(jià) | ||
LINEAR/凌特 |
23+ |
QFN |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價(jià) | ||
LINEAR/凌特 |
2021+ |
MSOP-16 |
100500 |
一級(jí)代理專營(yíng)品牌!原裝正品,優(yōu)勢(shì)現(xiàn)貨,長(zhǎng)期排單到貨 |
詢價(jià) | ||
LINEAR/凌特 |
24+ |
MSOP-16 |
25500 |
授權(quán)代理直銷,原廠原裝現(xiàn)貨,假一罰十,特價(jià)銷售 |
詢價(jià) | ||
NA |
23+ |
NA |
26094 |
10年以上分銷經(jīng)驗(yàn)原裝進(jìn)口正品,做服務(wù)型企業(yè) |
詢價(jià) |
