LTM4631 - Ultrathin Dual 10A or Single 20A DC/DC μModule Regulator
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Typical Application

LTM4631 Typical Application
LTM4631 Typical Application


The LTM4631 is a dual 10A or single 20A output switching mode step-down DC/DC μModule® (power module) regulator. Included in the package are the switching controller, power FETs, inductors and all supporting components. Operating from an input voltage range of 4.5V to 15V, the LTM4631 supports two outputs each with an output voltage range of 0.6V to 1.8V, each set by a single external resistor. Its high efficiency design delivers up to 10A continuous current for each output. Only a few input and output capacitors are needed.

The device supports frequency synchronization, multiphase operation, Burst Mode operation and output voltage tracking for supply rail sequencing and has an onboard temperature diode for device temperature monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage and overcurrent protection. The LTM4631 is offered in an ultrathin 16mm × 16mm × 1.91mm LGA and 16mm x 16mm x 2.51mm BGA packages. The LTM4631 is available with SnPb (BGA) or ROHS compliant terminal finish.


16mm x 16mm x 1.91mm LGA

LTM4631 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
LTM4631EV#PBF LGA 144 E $35.54 $24.88
LTM4631IV#PBF LGA 144 I $39.10 $27.37
LTM4631IY#PBF BGA 144 I $40.66 $28.46
LTM4631IY BGA 144 I $53.42 $37.39
LTM4631EY#PBF BGA 144 E $36.96 $25.87
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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.

Part Number Description Price Documentation
DC2147A LTM4631 Demo Board | Buck Module Regulator, 4.5V ≤ VIN ≤ 15V, Vout1/Vout2 = 1.2V/1.0V @ 10A $65.00