LTM4739

RECOMMENDED FOR NEW DESIGNS

15V_IN, Single 10A Step-Down μModule Regulator with PMBus

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $10.99

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Overview

Complete Solution in <1cm² (Single-Sided PCB) or 0.5cm² (Dual-Sided PCB)
PMBus Telemetry of Output Current, Output Voltage, Input Voltage, and Junction Temperature
Input Voltage Range: 3V to 15V
Output Voltage Range: 0.4V to 5.5V
Adjustable Reference Voltage: 0.4V to 0.8V (Default 0.5V)
10A Continuous Output Current at 12V_IN and 1.8V_OUT, (T_A = 90°C)
90% Full Load Efficiency from 12V_IN to 1V_OUT at 10A

±1% Maximum DC Output Error Overtemperature
Wide Frequency Range: 500kHz to 2MHz
Internal Compensation
Power Good Indicator
Constant Frequency Peak Current Mode Control
Differential Remote Sense
Single-Phase Point-of-Load (POL) Operation
49-Lead 6.25mm × 6.25mm × 5.07mm BGA package

The LTM4739 is a complete 10A step-down switching mode power μModule^® (micromodule) regulator with PMBus interface in a tiny 6.25mm × 6.25mm × 5.07mm, Ball grid array (BGA) package. The package includes the switching controller, the power MOSFETs, an inductor, and the supporting components. Operating over an input voltage range of 3V to 15V, the LTM4739 supports an output voltage range of 0.4V to 5.5V. Its highefficiency design delivers up to 10A of continuous output current. Only bulk input and output capacitors are needed. The switching frequency of the LTM4739 can be configured from 500kHz to 2MHz to provide the capability of optimizing the design in terms of size and performance.

The LTM4739 has an optional BIAS input pin, allowing connection from a 2.8V to 5.5V bias input supply for optimized efficiency. Operation settings and configurable features can be selected by connecting two pin-strap resistors from the PGMn pins to ground and later adjusted using PMBus commands. The LTM4739 has multiple protections, including positive and negative overcurrent (POC/NOC), output overvoltage (OV), and overtemperature (OT) to ensure a robust design. The LTM4739 is available with a RoHS-compliant terminal finish.

APPLICATIONS

Data Center Power, Servers, and Storage 
Telecom, Networking, and Industrial Equipment 
Point-of-Load Voltage Regulators

Part Models: 2
1ku List Price: Starting From $10.99

Documentation

Data Sheet 1

LTM4739: 15VIN, Single 10A Step-Down μModule Regulator with PMBus Data Sheet (Rev.0) 07/21/2025

User Guide 2

EVAL-LTM4739-AZ User Guide: LTM4739: 15V_IN, Single 10A Step-Down μModule Regulator with PMBus (Rev.0) 07/21/2025

LTM4739 User Reference Manual: Supported PMBus and Manufacturer-Specific Command Set Definitions (Rev.0) 08/05/2025

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
LTM4739EY#PBF	49-Ball Chip Scale Package Ball Grid Array [CSP_BGA]	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM4739IY#PBF	49-Ball Chip Scale Package Ball Grid Array [CSP_BGA]	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Software Resources

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Evaluation Kits

LTM4739: 15VIN, Single 10A Step-Down μModule Regulator with PMBus

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Features and Benefits

Complete single-phase point-of-load (POL) solution.
90% full load efficiency from 12V_IN to 1V_OUT at 10A.
PMBus telemetry of output current, reference voltage, input voltage, and junction temperature.

Product Details

The EVAL-LTM4739-AZ evaluation board features the LTM^®4739: a complete, high efficiency, high power-density, single 10A DC-to-DC step-down power μModule^® (micromodule) regulator with PMBus interface. The LTM4739 is available in a 49-lead 6.25mm × 6.25mm × 5.07mm Ball grid array (BGA) package. Read the LTM4739 data sheet before using or making any hardware changes to the EVAL-LTM4739-AZ evaluation board.

The EVAL-LTM4739-AZ input voltage range is 3V to 15V, and the output voltage range is 0.4V to 5.5V. The maximum load current is 10A. The output voltage is adjusted through the feedback resistor divider or the PMBus VOUT_COMMAND (the factory default output voltage is 1V). The switching frequency range is 500kHz to 2MHz (factory default frequency is 500kHz), configured through the pin-strap resistor at the PGM1 or with PMBus commands. The resistor value at the PGM1 pin is also used to adjust the control loop compensation parameters. The resistor value at the PGM0 pin is used to configure the positive overcurrent (POC) protection triggering level and the factory default PMBus address (0x39h). The factory default POC protection sets the peak inductor current limit to 15A. At a high ambient temperature, the current output may need to be derated (Refer to the LTM4739 data sheet for more details).

Resources

EVAL-LTM4739-AZ User Guide: LTM4739: 15V_IN, Single 10A Step-Down μModule Regulator with PMBus (Rev.0)
7/21/2025

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