LTC3374A

RECOMMENDED FOR NEW DESIGNS

High Accuracy 8-Channel Parallelable 1A Buck DC/DCs

Data Sheet (Rev. A) Product Selection Table

Part Models: 24
1ku List Price: Starting From $5.48

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Overview

8-Channel 1A Independent Step-Down DC/DCs
Master-Slave Configurable for Up to 4A of Output Current with a Single Inductor
Independent V_IN Supplies for Each DC/DC (2.25V to 5.5V)
All DC/DCs Have 0.8V to V_IN Output Range
±1% V_FB Accuracy, for Buck 1 (1A to 4A)
±1% PGOOD Accuracy
Precision Enable Pin Thresholds for Autonomous Sequencing

1MHz to 3MHz Programmable/Synchronizable Oscillator Frequency (2MHz Default)
Die Temperature Monitor Output
Thermally Enhanced 38-Lead 5mm × 7mm QFN and TSSOP Packages
Pin-Compatible with LTC3374
AEC-Q100 Qualified for Automotive Applications

The LTC3374A is a multioutput power supply IC consisting of eight synchronous 1A buck converters, all powered from independent 2.25V to 5.5V input supplies. An upgraded pin-compatible version of the LTC3374, the LTC3374A, has higher efficiency, improved output voltage accuracy and an added overvoltage (OV) indicator.

The DC/DCs may be used independently or in parallel to achieve higher output currents of up to 4A with a shared inductor. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock. The operating mode for all DC/DCs may be programmed via the MODE pin.

To reduce input noise the buck converters are phased in 90° steps. Precision enable pin thresholds simplify powerup sequencing. The LTC3374A is available in a 38-lead 5mm × 7mm QFN package as well as a 38-lead exposed pad TSSOP package.


	NOTES
LTC3374
LTC3374A	Higher efficiency, improved output voltage accuracy and an added overvoltage (OV) indicator

Applications

General Purpose Multichannel Power Supplies
Industrial/Automotive/Communications

Part Models: 24
1ku List Price: Starting From $5.48

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
LTC3374AEFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEFE#WPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEFE#WTRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEUHF#WPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AEUHF#WTRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHFE#WPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHFE#WTRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHUHF#WPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AHUHF#WTRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIFE#PBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIFE#TRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIFE#WPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIFE#WTRPBF	38-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIUHF#WPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3374AIUHF#WTRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LTC3374AEFE#PBF	PRODUCTION
LTC3374AEFE#TRPBF	PRODUCTION
LTC3374AEFE#WPBF	PRODUCTION
LTC3374AEFE#WTRPBF	PRODUCTION
LTC3374AHFE#PBF	PRODUCTION
LTC3374AHFE#TRPBF	PRODUCTION
LTC3374AHFE#WPBF	PRODUCTION
LTC3374AHFE#WTRPBF	PRODUCTION
LTC3374AIFE#PBF	PRODUCTION
LTC3374AIFE#TRPBF	PRODUCTION
LTC3374AIFE#WPBF	PRODUCTION
LTC3374AIFE#WTRPBF	PRODUCTION

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

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

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

Parts	Product Life Cycle	Description
LTC3374	PRODUCTION	8-Channel Parallelable 1A Buck DC/DCs
LTC3375	RECOMMENDED FOR NEW DESIGNS	8-Channel Programmable, Parallelable 1A Buck DC/DCs

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3374
LTC3374A

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

LTC3374AEUHF Demo Board | High Accuracy 8-Ch Parallelable 1A Sync Bucks; 2.25V ≤ VIN ≤ 5.5V, VOUT1 - VOUT8 = 1V to 3.3V @ 1A

Buy Now View Details

Product Details

Demonstration circuit 2440A is an 8-output power supply featuring the LTC3374A with improved efficiency and accuracy compared to the LTC3374. The LTC3374A has eight 1A synchronous buck regulators each with an independent V_IN supply that can range from 2.25V to 5.5V (the minimum VCC supply voltage is 2.7V). The input range of the LTC3374A is ideal for single cell Li-Ion/Polymer battery applications. Up to four buck regulators may be paralleled together to create a higher power buck regulator with a single inductor.

Resources

DC2440A - Demo Manual
9/12/2016

DC2440A - Design Files
9/12/2016

DC2440A - Schematic
9/12/2016

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