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LT8640-1中文资料
LT8640-1数据手册规格书PDF详情
DESCRIPTION
The LT®8645S/LT8646S synchronous step-down regulator
features second generation Silent Switcher architecture
designed to minimize EMI emissions while delivering high
efficiency at high switching frequencies. This includes the
integration of bypass capacitors to optimize all the fast
current loops inside and make it easy to achieve advertised
EMI performance by eliminating layout sensitivity.
The fast, clean, low-overshoot switching edges enable
high efficiency operation even at high switching frequencies,
leading to a small overall solution size. Peak current
mode control with a 40ns minimum on-time allows high
step-down ratios even at high switching frequencies. The
LT8646S has external compensation to enable current
sharing and fast transient response at high switching
frequencies.
Burst Mode® operation enables ultralow standby current
consumption, pulse-skipping mode allows full switching
frequency at lower output loads, or spread spectrum
operation can further reduce EMI emissions.
FEATURES
- Silent Switcher®2 Architecture
- Ultralow EMI Emissions on Any PCB
- Eliminates PCB Layout Sensitivity
- Internal Bypass Capacitors Reduce Radiated EMI
- Optional Spread Spectrum 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: 3.4V to 65V
- Ultralow Quiescent Current Burst Mode Operation
- 2.5μA IQ Regulating 12VIN to 3.3VOUT (LT8645S)
- Output Ripple < 10mVP-P
- External Compensation: Fast Transient Response
and Current Sharing (LT8646S)
- Fast Minimum Switch On-Time: 40ns
- Low Dropout Under All Conditions: 60mV at 1A
- Adjustable and Synchronizable: 200kHz to 2.2MHz
- Peak Current Mode Operation
- Output Soft-Start and Tracking
- Small 32-Lead 6mm × 4mm LQFN Package
- AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
- Automotive and Industrial Supplies
- General Purpose Step-Down
- GSM Power Supplies
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ADI/亚德诺 |
24+ |
QFN |
60000 |
全新原装现货 |
|||
ADI |
24+ |
20(18)-Lead Plastic Side Wetta |
3660 |
十年信誉,只做全新原装正品现货,以优势说话 !! |
|||
ADI/亚德诺 |
25+ |
原厂封装 |
10280 |
原厂授权代理,专注军工、汽车、医疗、工业、新能源! |
|||
ADI/亚德诺 |
25+ |
20000 |
原装现货,可追溯原厂渠道 |
||||
ADI/亚德诺 |
23+ |
TRAY |
3000 |
只做原装正品,假一赔十 |
|||
ADI(亚德诺) |
24+ |
QFN |
7350 |
原装进口,原厂直销!当天可交货,支持原型号开票! |
|||
ADI(亚德诺) |
24+ |
NA/ |
8735 |
原厂直销,现货供应,账期支持! |
|||
ADI |
24+ |
QFN |
20000 |
只有原装正品 |
|||
ADI |
23+ |
QFN |
8000 |
只做原装现货 |
|||
LINEAR/凌特 |
2324+ |
NA |
78920 |
二十余载金牌老企,研究所优秀合供单位,您的原厂窗口 |
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Analog Devices 亚德诺半导体技术有限公司
(Analog Devices,简称ADI)成立于1965年,总部位于美国马萨诸塞州诺丁汉,是全球领先的高性能模拟、混合信号和数字信号处理集成电路(IC)设计与制造公司。ADI致力于为各种应用提供创新的解决方案,涵盖通信、工业、汽车、医疗、消费电子和数据中心等多个领域。 公司以其强大的研发实力和专业技术著称,拥有广泛的产品组合,包括放大器、转换器、传感器和处理器等,能够满足客户在信号处理和控制方面的需求。ADI的产品被广泛应用于数据测量、无线通信、音频处理、视频监控以及自动化和控制系统等领域。 模拟器件公司始终致力于推动技术创新,凭借强大的科技实力,为客户提供高效、可靠的解决方案,帮助他们提高