LTC3676
LTC3676-1

RECOMMENDED FOR NEW DESIGNS

Power Management Solution for Application Processors

Data Sheet (Rev. H) Product Selection Table

Part Models: 27
1ku List Price: Starting From $6.55

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Overview

Quad I²C Adjustable High Efficiency Step Down DC/DC Converters: 2.5A, 2.5A, 1.5A, 1.5A
Three 300mA LDO Regulators (Two Adjustable)
DDR Power Solution with V_TT and VTTR Reference
Pushbutton ON/OFF Control with System Reset
Independent Enable Pin-Strap or I²C Sequencing
Programmable Autonomous Power-Down Control
Dynamic Voltage Scaling

Power Good and Reset Functions
Selectable 2.25MHz or 1.12MHz Switching Frequency
Always Alive 25mA LDO Regulator
12µA Standby Current
Low Profile 40-Lead 6mm × 6mm QFN and 48-Lead Exposed Pad LQFP Packages
AEC-Q100 Qualified for Automotive Application

The LTC3676 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. The LTC3676-1 has a ±1.5A buck regulator configured to support DDR termination plus a VTTR reference output. An I²C serial port is used to control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operating modes and status reporting.

Regulator start-up is sequenced by connecting outputs to enable pins in the desired order or via the I²C port. System power-on, power-off and reset functions are controlled by pushbutton interface, pin inputs, or I²C.

The LTC3676 supports i.MX, PXA and OMAP processors with eight independent rails at appropriate power levels. Other features include interface signals such as the VSTB pin that toggles between programmed run and standby output voltages on up to four rails simultaneously. The device is available in a 40-lead 6mm × 6mm QFN and 48-lead exposed pad LQFP packages.

APPLICATIONS

Supports Freescale i.MX6, ARM Cortex, and Other Application Processors
Handheld Instruments and Scanners
Portable Industrial and Medical Devices
Automotive Infotainment
High End Consumer Devices
Multi-Rail Systems

Part Models: 27
1ku List Price: Starting From $6.55

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
LTC3676ELXE#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676ELXE#WPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676ELXE-1#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676EUJ#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676EUJ#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676EUJ#WPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676EUJ#WTRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676EUJ-1#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676EUJ-1#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HLXE#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HLXE#WPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HLXE-1#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HUJ#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HUJ#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HUJ#WPBF	LFCSP:LEADFRM CHIP SCALE	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HUJ#WTRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HUJ-1#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676HUJ-1#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676ILXE#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676ILXE#WPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676ILXE-1#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676IUJ#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676IUJ#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676IUJ#WPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676IUJ#WTRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676IUJ-1#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3676IUJ-1#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2021 - 21_0046 Transfer of LQFP and LQFP_EP from AEM to AET
		PCN21_0046_Form Material_Report Qualification Results Summary Other
LTC3676ELXE#PBF	PRODUCTION
LTC3676ELXE-1#PBF	PRODUCTION
LTC3676HLXE#PBF	PRODUCTION
LTC3676ILXE#PBF	PRODUCTION
LTC3676ILXE-1#PBF	PRODUCTION
Apr 5, 2022 - 21_0046 Transfer of LQFP and LQFP_EP from AEM to AET
		PCN21_0046_Form Material_Report Qualification Results Summary Other Delta Qualification Matrix
LTC3676ELXE#WPBF	PRODUCTION
LTC3676HLXE#WPBF	PRODUCTION
LTC3676HLXE-1#PBF	PRODUCTION
LTC3676ILXE#WPBF	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
LTC3676EUJ#WPBF	PRODUCTION
LTC3676EUJ#WTRPBF	PRODUCTION
LTC3676EUJ-1#PBF	PRODUCTION
LTC3676EUJ-1#TRPBF	PRODUCTION
LTC3676HUJ#PBF	PRODUCTION
LTC3676HUJ#TRPBF	PRODUCTION
LTC3676HUJ#WPBF	PRODUCTION
LTC3676HUJ#WTRPBF	PRODUCTION
LTC3676HUJ-1#PBF	PRODUCTION
LTC3676HUJ-1#TRPBF	PRODUCTION
LTC3676IUJ#WPBF	PRODUCTION
LTC3676IUJ#WTRPBF	PRODUCTION
LTC3676IUJ-1#PBF	PRODUCTION
LTC3676IUJ-1#TRPBF	PRODUCTION

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

Software Resources

Device Drivers 1

LTC3676 GitHub Linux Driver Source Code

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Power System Management (PSM) & Sequencers 1
LTC2977	RECOMMENDED FOR NEW DESIGNS	8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

Tools & Simulations

Linduino 3

Software and Simulation 3

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Evaluation Kits

LTC3676EUJ Demo Board | PMIC for Application Processors: 4 Bucks, 4 LDOs, I2C Control (Requires DC2026)

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Product Details

Demonstration circuit 1976A-A is a multioutput power supply with a pushbutton controller and I²C, featuring the LTC3676EUJ. The LTC3676EUJ has four synchronous buck regulators (1.5A x 2 and 2.5A x 2), an always-on LDO (25mA) and three 100mA LDO regulators. The 2.7V to 5.5V input voltage range of the LTC3676EUJ is ideal for single-cell Li-Ion/Polymer battery applications.

Resources

DC1976A - Design Files
5/5/2015

DC1976A - Schematic
12/3/2013

DC1976A-A - Demo Manual
10/18/2013

LTC3676EUJ-1 Demo Board | PMIC with DDR DC/DC for Application Processors: 4 Bucks, 4 LDOs, I2C Control (Requires DC2026)

Buy Now View Details

Product Details

Demonstration circuit 1976A-B is a multioutput power supply with a pushbutton controller and I²C, featuring the LTC3676EUJ-1. The LTC3676EUJ-1 has four synchronous buck regulators (1.5A x 2 and 2.5A x 2), an always-on LDO (25mA) and three 100mA LDO regulators. One buck is configured to provide 1/2V_IN at 1.5A for DDR memory needs. The 2.7V to 5.5V input voltage range of the LTC3676EUJ-1 is ideal for single-cell Li-Ion/Polymer battery applications.

Resources

DC1976A - Design Files
5/5/2015

DC1976A - Schematic
12/3/2013

DC1976A-B - Demo Manual
10/9/2013

Reference Designs

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications

Part Used

LTC3676
LTC3676-1

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LTC3676
LTC3676-1

Overview

Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Video 1

Device Drivers 1

Product Selector Card 2

Solutions Bulletin & Brochure 1

Software Resources

Device Drivers 1

Evaluation Software 0

Hardware Ecosystem

Tools & Simulations

Linduino 3

Software and Simulation 3

Evaluation Kits

Product Details

Resources

Product Details

Resources

Reference Designs

Features and Benefits

Part Used

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