Linear LTM4623 3A μModule稳压电源解决方案

Linear公司的LTM4623是完整的3A开关模式超薄6.25mm × 6.25mm × 1.82mm LGA封装 μModule稳压电源,集成了开关控制器,功率FET,电感和支持元件,仅需要外接输入和输出陶瓷电容,输入电压4V到20V,输出电压从0.6V到5.5V,具有过压,过流和超温保护,主要用在通信,网络,数据通信和工业设备,数据存储单元和卡.本文介绍了LTM4623主要特性和简化框图,典型应用电路,以及演示板2171A-A主要指标,电路图和材料清单.
The LTM®4623 is a complete 3A step-down switching mode μModule (micromodule) regulator in a tiny ultrathin 6.25mm × 6.25mm × 1.82mm LGA package. Included in the package are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 4V to 20V or 2.375V to 20V with an external bias supply, the LTM4623 supports an output voltage range of 0.6V to 5.5V, set by a single external resistor. Its high efficiency design delivers 3A continuous output current.
Only ceramic input and output capacitors are needed.
The LTM4623 supports selectable discontinuous mode operation and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.
Fault protection features include overvoltage, overcurrent and overtemperature protection.
LTM4623主要特性:
 <2mm Height, Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB)
 Wide Input Voltage Range: 4V to 20V
 Input Voltage Down to 2.375V with External Bias
 0.6V to 5.5V Output Voltage
 3A DC Output Current
 ±1.5% Maximum Total DC Output Voltage Error
 Current Mode Control, Fast Transient Response
 Low EMI EN55022 Class B Compliant
 External Frequency Synchronization
 Multiphase Operation with Current Sharing
 Output Voltage Tracking
 Selectable Discontinuous Mode
 Power Good Indicator
 Overvoltage, Overcurrent and Overtemperature Protecti...