LT8334RDE#TRPBF 是一款由 Analog Devices（ADI）生产的开关稳压器，采用散热增强型12引脚DFN封装（4mm × 3mm，带散热垫），适用于工业、汽车、电信和医疗诊断等宽范围应用。

关键特性与规格： 该器件支持2.8V至40V的宽输入电压范围，最大输出电流为5A，开关频率可在300kHz至2MHz范围内编程。在Burst Mode工作模式下，静态电流低至9μA，典型输出纹波小于15mV，有助于提升轻负载效率。

它支持升压（Boost）、反相（Inverting）和SEPIC拓扑结构，通过单一反馈引脚进行正或负输出电压编程。其他特性包括外部时钟同步、展频调制（用于降低EMI）、可编程软启动、过流保护和过热保护。工作温度范围为-40°C至150°C，满足汽车级可靠性要求。

应用与可用性： 该器件适用于便携式电子设备、工业电源和汽车电子系统等场景，其高集成度和高效性能有助于简化电源设计。

Wide Input Voltage Range: 2.8V to 40V FAE；086+13312991513 Daniel

Ultralow Quiescent Current and Low Ripple Burst Mode Operation: IQ = 9μA

5A, 40V Power Switch

Positive or Negative Output Voltage Programming with a Single Feedback Pin

Programmable Frequency (300kHz to 2MHz)

Sychronizable to an External Clock

Spread Spectrum Frequency Modulation for Low EMI

Bias Pin for Higher Efficiency

Programmable Undervoltage Lockout (UVLO)

Overcurrent and Overtemperature Protection

Thermally Enhanced 12-Lead 4mm × 3mm DFN

The LT8334 is a current mode DC/DC converter with a 40V, 5A switch operating from a 2.8V to 40V input. With a unique single feedback pin architecture, it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9μA quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV.

An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 300kHz and 2MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between BURST or PULSE SKIP modes of operation with spread spectrum frequency modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Additional features include frequency foldback and programmable soft-start to control inductor current during start-up.

The LT8334 is available in a thermally enhanced 12-lead 4mm × 3mm DFN package.

APPLICATIONS

Industrial and Automotive

Telecom

Medical Diagnostic Equipment

Portable Electronics