LTC3589 Datasheet | Linear Technology

LTC3589/LTC3589-1/ LTC3589-2 8-Output Regulator with Sequencing and I2C Features nn Triple I2C Adjustable High Efficiency Step-Down DC/ DC Converters: 1.6A, 1A/1.2A, 1A/1.2A nn High Efficiency 1.2A Buck-Boost DC/DC Converter nn Triple 250m A LDO Regulators nn Pushbutton ON/OFF Control with System Reset nn Flexible Pin-Strap Sequencing Operation nn I2C and Independent Enable Control Pins nn Power Good and Reset Outputs nn Dynamic Voltage Scaling and Slew Rate Control nn Selectable 2.25MHz or 1.12MHz Switching Frequency nn Always-Alive 25m A LDO Regulator nn 8µA Standby Current nn 40-Pin 6mm × 6mm × 0.75mm QFN Applications nn Handheld Instruments and Scanners nn Portable Industrial Devices nn Automotive Infotainment nn Medical Devices nn High End Consumer Devices nn Multirail Systems nn Supports Freescale i.MX53/51, Marvell PXA and Other Application Processors Description The LTC®3589 is a plete 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 So C rails, a buck-boost regulator for I/O at 1.8V to 5V and three 250m A 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...