1. Products
  2. Power Management
  3. µModule Regulators
  4. µModule Boost Regulators
  5. LTM4661


Features and Benefits

  • Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB)
  • Input Voltage Range: 1.8V to 5.5V, Down to 0.7V After Start-Up
  • Output Voltage Range: 2.5V to 15V
  • 4A Switch Current
  • Dual Phase Operation
  • ±3% Maximum Total DC Output Voltage Regulation Over Load, Line and Temperature
  • Output Disconnect in Shut Down
  • Inrush Current Limit
  • External Frequency Synchronization
  • Selectable Burst Mode® Operation
  • Output Overvoltage and Overtemperature Protection
  • 6.25mm × 6.25mm × 2.42mm BGA package

Product Details

The LTM4661 is a synchronous step-up switching mode μModule® (power module) regulator in a 6.25mm × 6.25mm × 2.42mm BGA package. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage of 1.8V to 5.5V, down to 0.7V after start-up, the LTM4661 regulates an output voltage of 2.5V to 15V set by an external resistor. It provides up to 4A switch current. Only bulk input and output capacitors are needed.

The LTM4661 1MHz switching frequency and dual phase single output architecture enable fast transient response to line and load changes and a significant reduction of output ripple voltage. It supports frequency synchronization, PolyPhase® operation and selectable Burst Mode operation. The LTM4661 features a true output disconnect during shutdown and inrush current limit at start-up. It also has short-circuit, overvoltage and overtemperature protection.

The LTM4661 is Pb-free and RoHS compliant.


  • RF Microwave Power Amplifiers
  • Battery Powered DC Motors
  • 3.3V Bus Telecom Transceivers

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 (1)

Tools & Simulations


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Product Recommendations

LTM4661 Companion Parts

Recommended Related Parts

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
LTM4661EY#PBF Material Declaration Reliability Data 25-Lead BGA (6.25mm x 6.25mm x 2.42mm)
LTM4661IY Material Declaration Reliability Data 25-Lead BGA (6.25mm x 6.25mm x 2.42mm)
LTM4661IY#PBF Material Declaration Reliability Data 25-Lead BGA (6.25mm x 6.25mm x 2.42mm)
Wafer Fabrication Data R504 Reliability Data

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Evaluation Boards

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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.