LT3380

RECOMMENDED FOR NEW DESIGNS

Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators with I²C

Data Sheet (Rev. B) Product Selection Table

Part Models: 10
1ku List Price: Starting From $5.30

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Part Details

Quad I²C 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 or I²C Sequencing
Programmable Autonomous Power-Down Control
Warnings and Faults
IRQ Pin and IRQ Status Register
Power Good Pin and Status Register

150°C T_J Operation (LT3380H)
Dynamic Voltage Scaling
Selectable 2.25MHz or 1.12MHz Switching Frequency
12µA Standby Current
Side Wettable 40-Lead 6mm × 6mm QFN Package
AEC-Q100 Qualified for Automotive Applications

Part Models: 10
1ku List Price: Starting From $5.30

Documentation

Data Sheet 1

LT3380: Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators with I²C Data Sheet (Rev.B) 03/16/2020

User Guide 1

DC2985A - Demo Manual (Rev.0) 07/30/2020

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
LT3380EUJM#PBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380EUJM#TRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380HUJM#PBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380HUJM#TRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380HUJM#WPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380HUJM#WTRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380IUJM#PBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380IUJM#TRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380IUJM#WPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3380IUJM#WTRPBF	40-Lead QFN (6mm x 6mm, Plastic Side Wettable)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Tools & Simulations

LTspice 1

LT3380 - Step-Down (Buck) Regulators

Models for the following parts are available in LTspice:

LT3380

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

LT3380 Demo Board | Multi-Output Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators with I2C

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Product Details

DC2985A is a multi-output power management solution demonstration circuit, featuring the LT3380. It contains two 2.5A, two 1.5A synchronous step-down DC/DC regulators and three 300mA LDO regulators.

All regulators can be enabled with external enable pins. After the first regulator is enabled, the remaining enable pins use a precision threshold to allow hardwire-programmed Power-Up Sequence.

A micro-USB communication interface is integrated on board to allow software GUI to write or read the registers in LT3380 via its I²C serial port. This GUI can control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operation modes, status reporting and other special functions.

Refer to LT3380 data sheet for more details on the electrical specifications and the setting of its command registers.