LTM4608A

• Product introduction

LTM4608A low VIN with tracking, margining and frequency synchronization – 8A DC/DC μModule regulator

peculiarity

• Complete stand-alone power supply
• ±1.75% Total DC Output Error (-55ºC to 125ºC)
• 2.7V to 5.5V input voltage range
• 8A DC, 10A peak output current
• 0.6V to up to 5V output
• Output voltage tracking and margining
• Power supply good tracking margin
• Multiphase operation
• Parallel current sharing
• Built-in frequency synchronization
• Spread spectrum FM
• Overcurrent / thermal shutdown protection
• Current mode control, fast transient response
• Optional Burst Mode^®) action
• Up to 95% efficiency
• Output overvoltage protection
• Small profile, low profile 9mm x 15mm x 2.8mm LGA package (0.630mm pad)

description

LTM^®The 4608A is a complete 8A switch-mode DC/DC power supply with a total output voltage error of ±1.75%. The switch controller, power FETs, inductor, and all supporting components are included in the package. The LTM4608A operates from an input voltage range of 2.7V to 5.5V and supports an output voltage range of 0.6V to 5V set by a single external resistor. This high efficiency design delivers up to 8A of continuous current (10A peak). Only high-capacity input and output capacitors are required to complete the design.

The low profile (only 2.82mm high) enables the use of unused space on the back of the pc board for high-density point-of-load regulation. The 0.630mm LGA package liner with 1.27mm pitch simplifies PCB layout by providing standard trace routing and through-hole arrangements. The use of high switching frequency and current mode architectures enables a very fast transient response to voltage and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase and/or spread-spectrum operation, and output voltage tracking for rail sequencing and voltage margining.

Fault protection features include overvoltage protection, overcurrent protection, and thermal shutdown. The power module is available in a compact, thermally enhanced 9mm x 15mm x 2.8mm surface-mount LGA package. The LTM4608A is Pb-free and RoHS compliant.