LTM4640

PRODUCTION

20V_IN, 20A Step-Down DC-to-DC μModule Regulator

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $13.75

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Part Details

Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB)
Wide Input Voltage Range: 3.1V to 20V
0.6V to 3.3V Output Voltage
Up to 20A DC output current
±1.5% Maximum Total DC Output Voltage Error
Differential Remote Sensing Amplifier
Fast Transient Response
External Frequency Synchronization

Multiphase Parallel Current Sharing with upnto 4 × LTM4640s
Power Good Indicator
Overvoltage and Overtemperature Protection
49-Pin, 6.25mm × 6.25mm × 5.07mm, BGA package
Pin compatible with LTM4626, LTM4638, and LTM4657

Part Models: 2
1ku List Price: Starting From $13.75

Documentation

Data Sheet 1

LTM4640: 20V_IN, 20A Step-Down DC-to-DC μModule Regulator Data Sheet (Rev.0) 12/19/2024

User Guide 1

DC3107A User Guide: LTM4640 | 20V_IN, 20A Step-Down μModule Regulator (Rev.0) 12/19/2024

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 Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTM4640EY#PBF	49-Lead (6.25mm × 6.25mm × 10.12mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4640IY#PBF	49-Lead (6.25mm × 6.25mm × 10.12mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

LTM4640 |20VIN, 20A Step-Down μModule Regulator

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Features and Benefits

Current Mode Control, Fast Transient Response
External Frequency Synchronization
Differential Remote Sensing

Product Details

The DC3107A evaluation board features the LTM®4640 μModule® (micromodule) regulator, a high performance, and high-efficiency step-down regulator. The LTM4640 is a complete DC-to-DC point-of-load (POL) regulator in a thermally enhanced 6.25mm × 6.25mm × 5.17mm BGA package. The LTM4640 has an operating input voltage range of 3.1V to 20V and provides an output current of up to 20A. The output voltage is programmable from 0.6V to 3.3V and can be remotely sensed. The stacked inductor design improves thermal dissipation and significantly reduces the package area. Output voltage tracking is available through the TRACK/ SS pin for supply rail sequencing. External clock synchronization is available through the SYNC/MODE pin. For high efficiency at low load currents, select discontinuous-conduction mode (DCM) operation using the MODE jumper (JP7) in less noise-sensitive applications. Refer to the LTM4640 data sheet and read this user guide before working on or modifying the DC3107A evaluation board.