1. Products
  2. Power Management
  3. µModule Regulators
  4. µModule Buck Regulators
  5. LTM4660

New Content (1)


Features and Benefits

  • Input Voltage Range: 30V to 60V (65V Abs. Max.)
  • Wide Output Voltage: 4.5V to 18V (VOUT < VIN/2)
  • 97.3% Peak Efficiency (12VOUT at 15A, 48VIN)
  • ±1.5% Maximum Total DC Output Error
  • Up to 300W Output Power
  • Scalable: Parallel LTM4660s for Higher Power
  • Fixed Frequency Current Mode Control
  • Phase-Lockable External Synchronization from 200kHz to 1MHz
  • Low Start-Up Inrush Current with Flying Capacitor Voltage-Balancing Prior to DC/DC Switching Action
  • Output Voltage Tracking with Soft-Start
  • Short-Circuit Protection with Adjustable Retry-Timer
  • Overcurrent and Overtemperature Protection
  • Onboard Diode Temperature Monitor
  • Optional External Reference Input
  • Power Good and FAULT Indicators
  • 16mm × 16mm × 10.34mm BGA Package

Product Details

The LTM4660 is a complete 300W output switching mode hybrid-topology step-down DC/DC μModule® (micromodule) nonisolated bus converter. Its exposed power inductor resides on the top of the package, providing an intrinsic path for heat to dissipate up and out of the module—away from one’s printed circuit board. Included in the package are the switching controller IC, power MOSFETs and supporting components. Only flying (charge-pump) capacitors, bulk input and output bypass capacitors, and a few configuration passives are needed.

The LTM4660 features frequency synchronization, Burst Mode® operation and output voltage soft-start and tracking. An onboard temperature diode is available for temperature monitoring. The LTM4660 protects against short-circuit, overcurrent, and overtemperature faults. For higher power applications, multiple LTM4660 modules can be easily paralleled.

The LTM4660 is offered in a 16mm × 16mm × 10.34mm BGA package with RoHS compliant terminal finish.


  • Telecom, Data Centers and Networking Equipment
  • Industrial and Test Equipment

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Tools & Simulations


LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Models for the following parts are available in LTspice:


Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LTM4660EY#PBF Material Declaration Reliability Data 120-Lead BGA (16mm x 16mm x 10.34mm)
LTM4660IY#PBF Material Declaration Reliability Data 120-Lead BGA (16mm x 16mm x 10.34mm)
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.