LTM4634 - Triple Output 5A/5A/4A Step-Down DC/DC μModule® Regulator


  • Three Independent High Efficiency Regulator Channels
  • IOUT1,2 = 5A, IOUT3 = 4A
  • Input Voltage Range: 4.75V to 28V
  • Independent VIN for Each Channel
  • VOUT1,2 Voltage Range: 0.8V to 5.5V
  • VOUT3 Voltage Range: 0.8V to 13.5V
  • ±1.5% Maximum Total DC Output Error
  • Current Mode Control/Fast Transient Response
  • Frequency Synchronization
  • Output Overvoltage and Overcurrent Protection
  • PolyPhase® Operation with Current Sharing
  • General Purpose Temperature Monitors
  • Soft-Start/Voltage Tracking
  • Power Good Monitors
  • SnPb or RoHS Compliant Finish
  • 15mm × 15mm × 5.01mm BGA Package

Typical Application

LTM4634 Typical Application
LTM4634 Typical Application


The LTM®4634 integrates three complete 5A/5A/4A high efficiency switching mode DC/DC converters into one small package. Switching controllers, power FETs, inductors, and most support components are included. Operating over an input voltage range of 4.75V to 28V, the LTM4634 provides three independent output voltages. VOUT1 and VOUT2 are adjustable from 0.8V to 5.5V, while VOUT3 is adjustable from 0.8V to 13.5V. Each output voltage is set by a single 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, 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 LTM4634 is available with SnPb (BGA) or RoHS compliant terminal finish.


For complete and up to date package information and drawings, please refer to our packaging page

15mm × 15mm × 5.01mm BGA

LTM4634 Package Drawing

Order Info

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

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  • Telecom, Networking and Industrial Equipment
  • High Density Point of Load Voltage Regulation

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