器件名称: LTM4637
功能描述: 20A DC/DC μModule Step-Down Regulator
文件大小: 579.8KB 共28页
简 介:LTM4637 20A DC/DC Module Step-Down Regulator FEATURES
Complete 20A Switch Mode Power Supply 4.5V to 20V Input Voltage Range 0.6V to 5.5V Output Voltage Range ±1.5% Total DC Output Voltage Error (–40°C to 125°C) n Differential Remote Sense Amplifier for Precision Regulation for (VOUT ≤ 3.3V) n Current Mode Control/Fast Transient Response n Parallel Current Sharing (Up to 80A) n Frequency Synchronization n Selectable Pulse-Skipping or Burst Mode Operation n Soft-Start/Voltage Tracking n Up to 88% Efficiency (12V , 1.8V IN OUT) n Overcurrent Foldback Protection n Output Overvoltage Protection n Internal Temperature Monitor n Overtemperature Protection n15mm × 15mm × 4.32mm LGA Package n n
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DESCRIPTION
The LTM4637 is a complete 20A output high efficiency switch mode step-down DC/DC Module (micromodule) regulator. Included in the package are the switching controller, power FETs, inductor and compensation components. Operating over an input voltage range from 4.5V to 20V, the LTM4637 supports an output voltage range of 0.6V to 5.5V, set by a single external resistor. Only a few input and output capacitors are needed. Current mode operation allows precision current sharing of up to four LTM4637 regulators to obtain up to 80A output. 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, multiphase/current sharing, Burst Mode operation a……
