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LT8652S
Dual Channel 8.5A, 18V, Synchronous Step-Down Silent Switcher with 16µA Quiescent Current
製品概要
機能と利点
- Silent Switcher®2 Architecture:
- Ultralow EMI on Any PCB
- Eliminates PCB Layout Sensitivity
- Internal Bypass Capacitors Reduce Radiated EMI
- Spread Spectrum Frequency Modulation
- 8.5A DC from Each Channel Simultaneously
- Up to 12A on Either Channel
- Ultralow Quiescent Current Burst Mode® Operation:
- 16µA IQ Regulating 12VIN to 3.3VOUT (Both Channels)
- Output Ripple <10mVP-P
- ±1.2% 600mV Feedback Voltage with Remote Sense
- Output Current Monitor Pins with Current Limiting
- Forced Continuous Mode
- CLKOUT for Up to 4-Phase Operation
- 93.6% Efficiency at 6A, 3.3VOUT from 12VIN at 1MHz
- 85.6% Efficiency at 6A, 1.0VOUT from 12VIN at 1MHz
- Fast Minimum Switch-On Time: 20ns
- Adjustable and Synchronizable: 300kHz to 3MHz
- Small 4mm × 7mm 36-Pin LQFN Package
- AEC-Q100 Qualification for Automotive Applications
製品概要
The LT8652S is a dual step-down regulator that delivers up to 8.5A of continuous current from both channels and supports loads up to 12A from each channel. The LT8652S uses second generation Silent Switcher technology including integrated bypass capacitors to deliver a high frequency, high efficiency, small solution with excellent EMI performance. The LT8652S is ideal for noise sensitive applications such as PLLs and high bandwidth data and communications systems.
The fast, clean, low overshoot switching edges enable high efficiency operation even at high switching frequencies, enabling a wide control loop bandwidth for fast transient response. Output current monitoring and limiting allows inductors to be selected for the maximum output current in a given application. Differential output voltage sensing provides accurate voltage regulation at the point of load for high current applications. The two channels can be combined to deliver 17A, and two LT8652S ICs can be combined for a 4-phase, 34A supply.
Applications
- Server Power Applications
- General Purpose Step-Down
製品ライフサイクル
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発売済みの製品です。データシートには、最終的な仕様と動作条件がすべて記載されています。新規の設計には、これらの製品の使用を推奨します。
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LTspice
LTspice®は、無料で提供される強力で高速な回路シミュレータと回路図入力、波形ビューワに改善を加え、アナログ回路のシミュレーションを容易にするためのモデルを搭載しています。
下記製品はLTspiceで使用することが出来ます。:
LTpowerCAD
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Design tools for the following parts are available in LTpowerCAD:
参考資料
設計リソース
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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