LTC3589
LTC3589-1
LTC3589-2

RECOMMENDED FOR NEW DESIGNS

8-Output Regulator with Sequencing and I²C

Part Models: 18
1ku List Price: Starting From $5.54

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Part Details

Triple I²C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A/1.2A, 1A/1.2A
High Efficiency 1.2A Buck-Boost DC/DC Converter
Triple 250mA LDO Regulators
Pushbutton ON/OFF Control with System Reset
Flexible Pin-Strap Sequencing Operation
I²C and Independent Enable Control Pins
Power Good and Reset Outputs
Dynamic Voltage Scaling and Slew Rate Control
Selectable 2.25MHz or 1.12MHz Switching Frequency
Always-Alive 25mA LDO Regulator
8μA Standby Current
40-Pin 6mm × 6mm × 0.75mm QFN
Click here for Freescale i.MX53 reference design and driver support information

The LTC3589 is a complete power management solution for ARM and ARM-based processors and advanced portable microprocessor systems. The device contains three step-down DC/DC converters for core, memory and SoC rails, a buck-boost regulator for I/O at 1.8V to 5V and three 250mA LDO regulators for low noise analog supplies. An I²C serial port is used to control enables, output voltage levels, dynamic voltage scaling, operating modes and status reporting. Differences between the LTC3589, LTC3589-1, and LTC3589-2 are summarized in Table 1.

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

The LTC3589 supports i.MX53/51, PXA and OMAP processors with eight independent rails at appropriate power levels. Other features include interface signals such as the VSTB pin that simultaneously toggle up to four rails between programmed run and standby output voltages. The device is available in a low profile 40-pin 6mm × 6mm exposed pad QFN package.


	LTC3589	LTC3589-1	LTC3589-2
Power-On Inhibit Enable Delay	1 second	2ms	2ms
Buck 2 & 3 Current Output	1A	1.2A	1.2A
PGOOD Fault Timeout	Enabled Default, I²C Disable	Disabled by Default, I²C Enable	Disabled by Default, I²C Enable
PWR_ON to WAKE Delay	50ms	2ms	2ms
LDO3 Vout	1.8V	2.8V	2.8V
LDO4 Vout	1.8V, 2.5V, 2.8V, 3.3V	1.2V, 1.8V, 2.5V, 3.2V	1.2V, 1.8V, 2.5V, 3.2V
LDO4 Vout	1.8V, 2.5V, 2.8V, 3.3V	1.2V, 1.8V, 2.5V, 3.2V	1.2V, 1.8V, 2.5V, 3.2V
Default LDO4 Enable	LDO34_EN (Pin) or I²C	I²C Only	I²C Only
Wait to Enable Until Output < 300mV	Yes. Change with I²C	Yes. Change with I²C	No. Change with I²C
Insert 2.5K Discharge Resistor When Disabled	Yes when Wait to Enable Until Output < 300mV	Yes when Wait to Enable Until Output < 300mV	Always inserted when regulator disabled

Applications

Handheld Instruments and Scanners
Portable Industrial Devices
Automotive Infotainment
Medical Devices
High End Consumer Devices
Multirail Systems
Supports Freescale i.MX53/51, Marvell PXA and Other Application Processors

Part Models: 18
1ku List Price: Starting From $5.54

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
LTC3589EUJ#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589EUJ#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589EUJ-1#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589EUJ-1#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589EUJ-2#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589EUJ-2#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589HUJ#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589HUJ#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589HUJ-1#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589HUJ-1#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589HUJ-2#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589HUJ-2#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589IUJ#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589IUJ#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589IUJ-1#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589IUJ-1#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589IUJ-2#PBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3589IUJ-2#TRPBF	40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

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
LTC3589EUJ-1#PBF	PRODUCTION
LTC3589EUJ-1#TRPBF	PRODUCTION
LTC3589EUJ-2#PBF	PRODUCTION
LTC3589EUJ-2#TRPBF	PRODUCTION
LTC3589HUJ#PBF	PRODUCTION
LTC3589HUJ#TRPBF	PRODUCTION
LTC3589HUJ-1#PBF	PRODUCTION
LTC3589HUJ-1#TRPBF	PRODUCTION
LTC3589HUJ-2#PBF	PRODUCTION
LTC3589HUJ-2#TRPBF	PRODUCTION
LTC3589IUJ#PBF	PRODUCTION
LTC3589IUJ#TRPBF	PRODUCTION
LTC3589IUJ-1#PBF	PRODUCTION
LTC3589IUJ-1#TRPBF	PRODUCTION

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

Software Resources

Device Drivers 1

LTC3589 GitHub Linux Driver Source Code

Can't find the software or driver you need?

Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital Temperature Sensors 1
LTC2991	RECOMMENDED FOR NEW DESIGNS	Octal I²C Voltage, Current, and Temperature Monitor
Serial Bus Buffers, Extenders, and Accelerators 1
LTC4311	PRODUCTION	Low Voltage I²C/SMBus Accelerator

Tools & Simulations

LTspice 1

LTC3589 - Step-Down (Buck) Regulators

Models for the following parts are available in LTspice:

LTC3589

Linduino 3

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.

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

LTC3589EUJ-1 Demo Board | 8-Output Regulator with Sequencing & I2C, 2.7V ≤ VIN ≤ 5.5V, VOUT1 - 8 = 1.2V to 3.3V @ 25mA to 1.6A

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Product Details

Demonstration circuit 1808B-A is a 2.7V to 5.5V input, multioutput power supply with a pushbutton controller and I²C, featuring the LTC3589EUJ-1 (-A). The LTC3589EUJ-1 has three synchronous buck regulators, (1.6A, 1.2A, 1.2A) a 1.2A buck-boost regulator, a 25mA always-on LDO and three 200mA LDO regulators.

The switching regulator settings, such as enables, feedback voltages, operating modes and other functions, can be controlled via I²C.

Resources

DC1808B - Demo Manual
10/31/2012

DC1808B - Design Files
10/31/2012

DC1808B - Schematic
10/31/2012

LTC3589EUJ-2 Demo Board | 8-Output Regulator with Sequencing & I2C, 2.7V ≤ VIN ≤ 5.5V, VOUT1 - 8 = 1.2V to 3.3V @ 25mA to 1.6A

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Product Details

Demonstration circuit 1808B-B is a 2.7V to 5.5V input, multioutput power supply with a pushbutton controller and I²C, featuring the LTC3589EUJ-2 (-B). The LTC3589EUJ-2 has three synchronous buck regulators, (1.6A, 1.2A, 1.2A) a 1.2A buck-boost regulator, a 25mA always-on LDO and three 200mA LDO regulators.

The switching regulator settings, such as enables, feedback voltages, operating modes and other functions, can be controlled via I²C.

Resources

DC1808B - Demo Manual
10/31/2012

DC1808B - Design Files
10/31/2012

DC1808B - Schematic
10/31/2012

LTC3589EUJ Demo Board | 8-Output Regulator with Sequencing & I2C, 2.7V ≤ VIN ≤ 5.5V, VOUT1-8 = 1.2V to 3.3V @ 25mA to 1.6A

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Product Details

Demonstration Circuit 1558A is a 2.7V to 5.5V input, multioutput power supply with a pushbutton controller and I2C, featuring the LTC3589EUJ. The LTC3589 has three synchronous buck regulators (1.6A, 1A, 1A), a buck-boost regulator (1.2A), a 25mA always-on LDO, and three 200mA LDO regulators.

The switching regulator settings such as enables, feedback voltages, operating modes and other functions can be controlled via I²C.

Resources

DC1558A - Design Files
10/12/2016

DC1558A - Demo Manual
10/12/2016

DC1558A - Schematic
10/12/2016

Software

DC1558A - GUI Installation
943.00K

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

LT8609
LT8609A
LT8609B

LTC3589
LTC3589-1
LTC3589-2

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Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Technical Articles 1

Device Drivers 1

Solutions Bulletin & Brochure 1

Product Selector Card 1

Software Resources

Device Drivers 1

Evaluation Software 1

Hardware Ecosystem

Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

Linduino 3

Evaluation Kits

Product Details

Resources

Product Details

Resources

Product Details

Resources

Software

Reference Designs

Features and Benefits

Part Used

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