Features

• Three Independent 10A DC Output Current Regulator Channels
• Input Voltage Range: 4.7V to 16V
• 2.375V to 16V with External 5V Bias
• V_OUT1,2 Voltage Range: 0.8V to 1.8V
• V_OUT3 Voltage Range: 0.8V to 5.5V
• ±1.5% Maximum Total DC Output Error
• Current Mode Control/Fast Transient Response
• Frequency Synchronization
• Output Overvoltage and Overcurrent Protection
• Multiphase Operation with Current Sharing on V_OUT1 and V_OUT2
• General Purpose Temperature Monitors
• Soft-Start/Voltage Tracking
• Power Good Monitors
• 15mm × 15mm × 5.01mm BGA Package

Typical Application

Description

The LTM®4633 μModule® (power module) regulator combines three complete 10A switching mode DC/DC converters into one small package. Included in the package are the switching controllers, power FETs, inductors, and most support components. The LTM4633’s three regulators operate from 4.7V to 16V input rail(s) or 2.375V to 16V with an external 5V bias. The V_OUT1 and V_OUT2 output range is 0.8V to 1.8V, while the V_OUT3 output range is 0.8V to 5.5V. Each output is set by one external resistor.

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 parallel operation of V_OUT1 and V_OUT2, soft-start and output voltage tracking for supply rail sequencing.

Fault protection features include overvoltage protection, overcurrent protection and temperature monitoring. The power module is offered in a space saving, thermally enhanced 15mm × 15mm × 5.01mm BGA package. The LTM4633 is RoHS compliant with Pb-free finish.