LTC3589
LTC3589-1
LTC3589-2
RECOMMENDED FOR NEW DESIGNS
8-Output Regulator with Sequencing and I2C
- Part Models
- 18
- 1ku List Price
- Starting From $7.01
Overview
- 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
Documentation
Data Sheet 1
User Guide 2
Technical Articles 1
Product Selector Card 1
Brochure 1
Device Drivers 1
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 Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive) |
||
| 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
Evaluation Software 1
Can't find the software or driver you need?
Hardware Ecosystem
Tools & Simulations
LTspice
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.
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
Resources
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
Resources
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
Resources
Software
Reference Designs
