LTM4605

RECOMMENDED FOR NEW DESIGNS

High Efficiency Buck-Boost DC/DC μModule (Power Module) Regulator

Data Sheet (Rev. E) Product Selection Table

Part Models: 2
1ku List Price: Starting From $22.13

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Overview

Single Inductor Architecture Allows V_IN Above, Below or Equal to V_OUT
Wide V_IN Range: 4.5V to 20V
Wide V_OUT Range: 0.8V to 16V
5A DC Typical (12A DC Typical at Buck Mode)
High Efficiency Up to 98%
Current Mode Control
Power Good Output Signal

Phase-Lockable Fixed Frequency: 200kHz to 400kHz
Ultrafast Transient Response
Current Foldback Protection
Output Overvoltage Protection
Small, Low Profile Surface Mount LGA Package (15mm × 15mm × 2.8mm)

The LTM4605 is a high efficiency switching mode buckboost power supply. Included in the package are the switching controller, power FETs, and support components. Operating over an input voltage range of 4.5V to 20V, the LTM4605 supports an output voltage range of 0.8V to 16V, set by a resistor. This high efficiency design delivers up to 5A continuous current in boost mode (12A in buck mode). Only the inductor, sense resistor, bulk input and output capacitors are needed to finish the design.

The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The high switching frequency and current mode architecture enable a very fast transient response to line and load changes. The LTM4605 can be frequency synchronized with an external clock to reduce undesirable frequency harmonics.

Fault protection features include overvoltage and foldback current protection. The DC/DC μModule^® regulator is offered in a small and thermally enhanced 15mm × 15mm × 2.8mm LGA package. The LTM4605 is Pb-free and RoHS compliant.

APPLICATIONS

Telecom, Servers and Networking Equipment
Industrial and Automotive Equipment
High Power Battery-Operated Devices

Part Models: 2
1ku List Price: Starting From $22.13

Documentation

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
LTM4605EV#PBF	141-Lead LGA (15mm x 15mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM4605IV#PBF	141-Lead LGA (15mm x 15mm x 2.82mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 30, 2021 - 21_0172 Moisture Sensitivity Level Rating Downgrade for LTM4605, LTM4607, LTM4609 to MSL4
		PCN21_0172_Form Material_Report
LTM4605EV#PBF	PRODUCTION
LTM4605IV#PBF	PRODUCTION
Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report Delta Qualification Matrix
LTM4605EV#PBF	PRODUCTION
LTM4605IV#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
LTM4605EV#PBF	PRODUCTION
LTM4605IV#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
Oscillators 1
LTC6908		Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation
Power System Management (PSM) & Sequencers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Protection Switches & Controllers 2
LT4363	RECOMMENDED FOR NEW DESIGNS	High Voltage Surge Stopper with Current Limit
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection

Switching Regulators & Controllers 1
LTM8045	RECOMMENDED FOR NEW DESIGNS	Inverting or SEPIC μModule (Power Module) DC/DC Converter with Up to 700mA Output Current

Tools & Simulations

LTspice 1

LTM4605 Demo Circuit - High Efficiency Buck-Boost DC/DC uModule (15V to 12V @ 5A)

Models for the following parts are available in LTspice:

LTM4605

LTpowerCAD 1

LTM4605 Project - High Efﬁciency Buck-Boost µModule Supply (4.5-20V to 12V @ 5A)

Design tools for the following parts are available in LTpowerCAD:

LTM4605

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

LTM4605EV Demo Board | 4.5V to 20VIN, 12VOUT @ 5A

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Product Details

Demonstration circuit DC1198B-A features the LTM4605EV, the high efficiency, high density switch mode buck-boost μModule^® regulator. The LTM4605EV can regulate its output voltage from an input voltage above, below, or equal to the output. The input voltage range of DC1198B-A is from 4.5V to 20V with a preset output voltage of 12V. The rated load current is 5A, although derating is necessary for certain V_IN, V_OUT, and thermal conditions. The switching frequency may be synchronized to an external clock from 200kHz to 400kHz. This PLL can be used not only to reduce undesirable frequency harmonics but also to parallel LTM4605 to provide high output current.

Resources

DC1198B-A - Demo Manual
5/7/2013

DC1198B - Design Files
3/22/2013

DC1198B - Schematic
3/22/2013

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LTM4605

Overview

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Design Note 1

Technical Articles 3

Product Selector Card 2

Webcast 1