LT3383

RECOMMENDED FOR NEW DESIGNS

Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators

Data Sheet (Rev. B) Product Selection Table

Part Models: 10
1ku List Price: Starting From $5.06

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Overview

Quad Adjustable High Efficiency Step-Down DC/DC Converters: 2.5A, 2.5A, 1.5A, 1.5A
Three 300mA LDO Regulators (Two Adjustable)
Independent Enable Pin-Strap Sequencing
Power Good

2.25MHz Switching Frequency
12µA Standby Current
150°C T_J Operation (LT3383H)
Side Wettable 40-Lead 6mm × 6mm QFN Package
AEC-Q100 Qualified for Automotive Applications

The LT3383 is a complete power management solution for advanced portable application processor-based systems. The device contains four synchronous step-down DC/DC converters for core, memory, I/O, and system on-chip (SoC) rails and three 300mA LDO regulators for low noise analog supplies.

Regulator start-up is sequenced by connecting outputs to enable pins in the desired order. A master power-on pin is provided to initiate pin-strapped power-on sequences.

A status pin is available to indicate regulator undervoltages. If an overtemperature or low supply fault is detected all regulators are disabled during the fault condition.

The device is available in a 40-lead 6mm × 6mm QFN with wettable flanks for optical inspection.

APPLICATIONS

Automotive
Industrial
Communications
General Purpose Multichannel Power Supplies

Part Models: 10
1ku List Price: Starting From $5.06

Documentation

Data Sheet 1

LT3383: Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators Data Sheet (Rev.B) 03/16/2020

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
LT3383EUJM#PBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383EUJM#TRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383HUJM#PBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383HUJM#TRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383HUJM#WPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383HUJM#WTRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383IUJM#PBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383IUJM#TRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383IUJM#WPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3383IUJM#WTRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LT3383EUJM#PBF	PRODUCTION
LT3383EUJM#TRPBF	PRODUCTION
LT3383HUJM#PBF	PRODUCTION
LT3383HUJM#TRPBF	PRODUCTION
LT3383IUJM#PBF	PRODUCTION
LT3383IUJM#TRPBF	PRODUCTION
Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive)
		PCN25_0043_Form Material_Report Delta Qualification Matrix Qualification Results Summary
LT3383HUJM#WPBF	PRODUCTION
LT3383HUJM#WTRPBF	PRODUCTION
LT3383IUJM#WPBF	PRODUCTION
LT3383IUJM#WTRPBF	PRODUCTION
Apr 9, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LT3383HUJM#WPBF	PRODUCTION
LT3383HUJM#WTRPBF	PRODUCTION
LT3383IUJM#WPBF	PRODUCTION
LT3383IUJM#WTRPBF	PRODUCTION

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

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT3383

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.

Evaluation Kits

LT3383 | Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators

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Product Details

DC2984A is a multi-output power management solution demonstration circuit, featuring the LT3383. It contains two 2.5A synchronous step-down DC-DC regulators, two 1.5A synchronous step-down DC-DC regulators and three 300mA LDO regulators. All the regulators can be enabled via its corresponding enable pins. The startup sequence of the regulators can be programmed by connecting the outputs of the regulators to the enable pins in desired order.

Resources

DC2984A - Demo Manaul
5/21/2020

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