Linear LTM4618带跟踪的6A DC电源稳压解决方案

Linear 公司的LTM4618是带跟踪和频率同步的6A DC/DC μModule电源稳压解器，包括了开关控制器，功率FET，电感和所有支持的元件。输入电压4.5V - 26.5V，输出电压0.8V - 5V由单个外接电阻设定。可锁相的固定频率从250kHz到780kHz，可应用在通信和网络设备，服务器，存储卡，ATXA卡，工业设备，点负载稳压和医疗系统。本文介绍了LTM4618主要特性，简化方框图以及多种应用电路。
6A DC/DC μModule Regulator with Tracking and Frequency Synchronization
The LTMR4618 is a complete 6A output switching mode DC/DC power supply in a 9mm x15mmx 4.32mm LGA package. Included in the package are the switching controller, power FETs, inductor and all support components.
Operating over an input voltage range of 4.5V to 26.5V, the LTM4618 supports an output voltage range of 0.8V to 5V set by a single external resistor. Its high efficiency design delivers 6A continuous current (8A peak). Only a few input and output capacitors are needed.
High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization and output voltage tracking for supply rail sequencing. Burst Mode operation or pulseskipping mode can be selected for light load operations.
Fault protection features include overvoltage protection, overcurrent protection and foldback current limit for short-circuit protection.
The LTM4618 is Pb-free and RoHS compliant.
LTM4618主要特性:
Complete Standalone Power Supply
Wide Input Voltage Range: 4.5V to 26.5V
6A DC Typical, 8A Peak Output Current
0.8V to 5V Output
Output Voltage Tracking
±1.75% Maximum Total DC Error
Current Mode Control/Fast Transient Response
Phase-Lockable Fixed Frequency 250kHz to 780kHz
On-Board Frequency Synchronization
Selectable Burst ModeR Operation
Power Good Voltage Indicator
Output Overvoltage Protection
Output Current Foldback Limiting
9mmx15mmx4.32mm LGA Package