Features

• 10A DC Output Current
• Input Voltage Range: 2.375V to 5.5V
• Output Voltage Range: 0.6V to 5V
• No Heat Sink or Current Derating Up to 85°C Ambient Temperature
• ±1.5% Maximum Total DC Output Error
• Multiphase Operation with Current Sharing
• Remote Sense Amplifier
• Built-In Temperature Monitor
• Selectable Pulse-Skipping Mode/Burst Mode® Operation for High Efficiency at Light Load
• Soft-Start/Voltage Tracking
• Protection: Output Overvoltage and Overcurrent Foldback
• See LTM4649 for Up to 16V_IN Operation
• 9mm × 15mm × 4.92mm BGA Package

Typical Application

Description

The LTM®4648 is a 10A low V_IN step-down DC/DC μModule® (power module) regulator. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 2.375V to 5.5V, the LTM4648 supports an output voltage range of 0.6V to 5V, set by a single external resistor. This high efficiency design delivers up to 10A continuous current. Only bulk 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, programmable multiphase operation and output voltage tracking for supply rail sequencing.

Fault protection features include overvoltage protection, overcurrent protection and thermal shutdown. The LTM4648 is offered in a small 9mm × 15mm × 4.92mm BGA package. The LTM4648 is RoHS compliant. For up to 16V_IN operation, see the LTM4649.