Linear LTMR4644四路微模块16A稳压电源解决方案

Linear公司的LTMR4644是四路微模块(μModule)降压DC/DC稳压器,每路输出4A,四路并联可获得16A电流.器件集成了开关控制器,功率FET,电感器和支持元件,输入电压4V-14V或2.375V-14V,输出电压在0.6V到5.5V可调,主要用在多路点负载以及FPGA,DSP和ASIC电源.本文介绍了LTMR4644主要特性,框图,几种典型应用电路以及演示板DC1900A 主要特性,电路图,材料清单和PCB元件布局图.

The LTMR4644 is a quad DC/DC step-down μModule (micromodule) regulator with 4A per output. Outputs can be paralleled in an array for up to 16A capability. Included in the package are the switching controllers, power FETs, inductors and support components. Operating over an input voltage range of 4V to 14V or 2.375V to 14V with an external bias supply, the LTM4644 supports an output voltage range of 0.6V to 5.5V each set by a single external resistor. Its high efficiency design delivers 4A continuous (5A peak) output current per channel. Only bulk input and output capacitors are needed.

Fault protection features include overvoltage, overcurrent and overtemperature protection. The LTM4644 is offered in 9mm ×15mm × 5.01mm BGA package. The LTM4644 is RoHS compliant.

LTMR4644主要特性:

 Quad Output Step-Down μModuleR Regulator with 4A per Output
 Wide Input Voltage Range: 4V to 14V
 2.375V to 14V with External Bias..

查看全文