LTM4650A-1

RECOMMENDED FOR NEW DESIGNS

Dual 25A or Single 50A DC/DC μModule Regulator with 1% DC Accuracy

Data Sheet (Rev. C) Product Selection Table

Part Models: 3
1ku List Price: Starting From $71.48

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Overview

Dual 25A or Single 50A Output
Input Voltage Range: 4.5V to 16V
Output Voltage Range: 0.6V to 5.5V
±1% Maximum Total DC Output Error Over Line, Load and Temperature
Higher Light Load Efficiency and Wider V_OUT Range Than LTM4650-1
Adjustable Control Loop Compensation
Differential Remote Sense Amplifier
Current Mode Control/Fast Transient Response
Multiphase Parallel Current Sharing Up to 300A

Internal Temperature Monitor
Adjustable Switching Frequency or Synchronization
Overcurrent Foldback Protection
Selectable Burst Mode^® Operation, Pulse-Skipping Mode Operation
Soft-Start/Voltage Tracking
Output Overvoltage Protection
16mm × 16mm × 5.01mm BGA Package

The LTM4650A-1 is a dual 25A or single 50A output switching mode step-down DC/DC μModule^® (micromodule) regulator with ±1% total DC output error. Included in the package are the switching controllers, power FETs, inductors and all supporting components. Operating from an input voltage range of 4.5V to 16V, the LTM4650A-1 supports two outputs with an output voltage range of 0.6V to 5.5V, each set by a single external resistor. Its high efficiency design delivers up to 25A continuous current for each output. Only a few input and output capacitors are needed. Adjustable control loop compensation allows for fast transient response to minimize output capacitance when powering FPGAs, ASICs, and processors.

Fault protection features include overvoltage and overcurrent protection. The LTM4650A-1 is offered in 16mm × 16mm × 5.01mm BGA package.


	V_IN Range	V_OUT Range	I_OUT	Compensation	DC V_out Accuracy
LTM4650	4.5V to 15V	0.6V to 1.8V	25A × 2	Internal	1.5%
LTM4650-1B	4.5V to 15V	0.6V to 1.8V	25A × 2	External	1.5%
LTM4650-1A	4.5V to 15V	0.6V to 1.8V	25A × 2	External	0.8%
LTM4650A	4.5V to 16V	0.6V to 5.5V	25A × 2	Internal	1%
LTM4650A-1	4.5V to 16V	0.6V to 5.5V	25A × 2	External	1%

Applications

Telecom and Networking Equipment
Storage and ATCA Cards
Industrial Equipment

Part Models: 3
1ku List Price: Starting From $71.48

Documentation

Data Sheet 1

LTM4650A-1: Dual 25A or Single 50A DC/DC μModule Regulator with 1% DC Accuracy Data Sheet (Rev.C) 03/17/2023

User Guide 2

DC3064A - Demo Manual (Rev.0) 08/01/2022

DC2603A-B - Demo Manual 07/05/2017

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
LTM4650AEY-1#PBF	144-Lead BGA (16mm x 16mm x 5.01mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTM4650AIY-1	144-Lead BGA (16mm x 16mm x 5.01mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTM4650AIY-1#PBF	144-Lead BGA (16mm x 16mm x 5.01mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Nov 8, 2021 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Other
LTM4650AEY-1#PBF	PRODUCTION
LTM4650AIY-1	PRODUCTION
LTM4650AIY-1#PBF	PRODUCTION
Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report
LTM4650AEY-1#PBF	PRODUCTION
LTM4650AIY-1	PRODUCTION
LTM4650AIY-1#PBF	PRODUCTION
Feb 28, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia
		PCN20_0123_Form Material_Report Test Correlation Report Other Qualification Results Summary
LTM4650AEY-1#PBF	PRODUCTION
LTM4650AIY-1	PRODUCTION
LTM4650AIY-1#PBF	PRODUCTION
Feb 5, 2020 - 20_0127 Supplier Material Change for µModule
		PCN20_0127_Form Material_Report Qualification Results Summary
LTM4650AEY-1#PBF	PRODUCTION
LTM4650AIY-1	PRODUCTION
LTM4650AIY-1#PBF	PRODUCTION
Jul 25, 2019 - 19_0168 Notification of qualification of a new mold compound for the LTM4650, LTM4650A, LTM4650A-1 µModule Regulator
		PCN19_0168_Form Material_Report Qualification Results Summary
LTM4650AEY-1#PBF	PRODUCTION
LTM4650AIY-1	PRODUCTION
LTM4650AIY-1#PBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Hot Swap Controllers 1
LTC4232	RECOMMENDED FOR NEW DESIGNS	5A Integrated Hot Swap Controller
Power System Management (PSM) & Sequencers 1
LTC2975	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTM4650
LTM4650-1
LTM4650-2
LTM4650A
LTM4650A-1

LTpowerCAD 1

LTM4650A-1 Project - Dual Output, High Current Buck μModule Regulator (4.5-16V to 1.5V & 3.3 @ 25A)

Design tools for the following parts are available in LTpowerCAD:

LTM4650
LTM4650-1
LTM4650-2
LTM4650A
LTM4650A-1
LTM4650A-1(INVERTING)

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.

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

LTM4650A-1 | High Efficiency, PolyPhase 200A Step-Down Power μModule Regulator 4× LTM4650A-1, 200A

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Product Details

Demonstration circuit 3064A features PolyPhase^® design using the LTM4650AEY-1, the high efficiency, high density, dual 25A, switch mode step-down power μModule^® regulator. The input voltage is from 4.5V to 16V. The output voltage is jumper selectable from 1.0V to 5.1V. DC3064A can deliver nominal 200A output current. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The LTM4650A-1 on DC3064A always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. The board allows the user to program how its output voltage ramps up and down through the TRACK pin. The output voltage is tightly regulated between "VO+" and "VO–" through remote output voltage sensing which improves output voltage regulation at heavy loads. These features and the availability of the LTM4650AEY-1 in a compact 16mm × 16mm × 5.01mm BGA package make it ideal for use in many high density point-of-load regulation applications. The LTM4650A-1 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC3064A.

Resources

DC3064A - Design Files
8/1/2022

DC3064A - Schematic
8/1/2022

DC3064A - Demo Manual (Rev.0)
8/1/2022

LTM4650A-1 Dual 25A or Single 50A µModule Regulator

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Product Details

Demonstration circuit 2268A-I is a high efficiency, high density, dual 8A, switch mode step-down power supply on a compact 1.5' × 1.2' PCB. It features the LTM4650A-1 μModule^® regulator. The input voltage is from 4.5V to 16V. The output voltage is programmable from 0.6V to 5.3V. DC2268A-I can deliver up to 25A maximum in each channel. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the resistor jumper (R1/R2) selects pulse-skipping mode for noise sensitive applications or Burst-Mode® in less noise sensitive applications. Two outputs can be connected in parallel for a single 50A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/SS pin. Remote output voltage sensing is available for improved output voltage regulation at the load point. An optional input inductor L1 reduces the EMI noise for noise sensitive applications. DC2268A can be easily inserted to an edge connector for testing and debugging. These features and the availability of the LTM4650A-1 in a compact 16mm × 16mm × 4.41mm LGA package make it ideal for use in many high-density point-of-load regulation applications. The LTM4650A-1 data sheet must be read in conjunction with this demo manual for working on or modifying the DC2268A-I.

Resources

DC2268A - Schematic
3/31/2016

DC2268A-I - Design Files
3/27/2019

DC2268A-I - Demo Manual
3/27/2019

LTM4650AEY-1 Demo Board | Dual 25A or Single 50A DC/DC μModule Regulator with 1% DC Accuracy

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Product Details

Demonstration circuit 2603A-B features the LTM4650AEY-1, the high efficiency, high density, dual 25A, single 50A switch mode step-down power module regulator. The input voltage is from 4.5V to 16V. The output voltage is programmable from 0.6V to 5.5V. DC2603A-B can deliver 25A maximum current from each channel. The board designs with minimum components to demonstrate this high efficiency, high density μModule^®. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper (JP1) selects pulse-skipping mode for noise sensitive applications or Burst Mode^® operation in less noise sensitive applications. Two outputs can be connected in parallel for a single 50A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/SS pin. The output can be set up to either coincidentally or ratiometrically track with another supply’s output. Remote output voltage sensing is available for improved output voltage regulation at the load point. These features and the availability of the LTM4650AEY-1 in a compact 16mm × 16mm × 5.01mm BGA package make it ideal for use in many high-density point-of-load applications. The LTM4650A-1 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2603A-B.