The LTM 4616 is a complete dual 2-phase 8A per channel switch mode DC/DC power regulator system in a 15mmx15mm surface mount LGA package. Included in the package
are the switching controller, power FETs, inductor and all support components. Operating from an input voltage range of 2.375V to 5.5V, the LTM4616 supports two outputs within a voltage range of 0.6V to 5V, each set by a single external resistor. This high efficiency design delivers up to 8A continuous current (10A peak) for each output. Only bulk input and output capacitors are needed, depending on ripple requirement. The part can also be configured for a two phase single output at up to 16A.
The low profile package (2.82mm) enables utilization of unused space on the back side of PC boards for high density point-of-load regulation.
Fault protection features include overvoltage protection, overcurrent protection and thermal shutdown. The power module is offered in a space saving and thermally enhanced 15mm × 15mm × 2.82mm LGA package. The LTM4616 is Pb-free and RoHS compliant. 
图1. LTM4616外形图
主要特性:
■ Complete Dual DC/DC Regulator System
■ Input Voltage Range: 2.375V to 5.5V
■ Dual 8A Outputs, or Single 16A Output with a 0.6V to 5V Range
■ Output Voltage Tracking and Margining
■ ±1.75% Total DC Output Error (–40°C to 125°C)
■ Current Mode Control/Fast Transient Response
■ Power Good Tracking and Margining
■ Overcurrent/Thermal Shutdown Protection
■ Onboard Frequency Synchronization
■ Spread Spectrum Frequency Modulation
■ Multiphase Operation
■ Selectable Burst Mode Operation
■ Output Overvoltage Protection
■ Gold-Pad Finish Allows Soldering with Pb and Pb-Free Solder Paste
■ Small Surface Mount Footprint, Low Profile (15mm × 15mm × 2.82mm) LGA Package
典型应用:
■ Telecom, Networking and Industrial Equipment
■ Storage and ATCA, PCI Express Cards
■ Battery Operated Equipment
TYPICAL APPLICATION
图2. LTM4616典型应用电路图
图3. LTM4616简化方框图
图4.带跟踪的双输出(3.3V和1.5V)的电路图
图5. 3.2V-5V输入,1.8V,1.5V输出的电路图
图6.两输出并联,输出1.5V/16A电路图
图7.LTM4616输出顺序应用电路图
图8.四相并联,输出1.2V/32A电路图
图9.带跟踪的四相四输出(3.3V,2.5V,1.8V和1.5V)电路图
本文关键字：暂无联系方式电子技术，电工技术 - 电子技术
