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Power-supply ICs and controllers

Linear Technology introduces two PMIC power management products for portable processors

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By Linear Technology now part of Analog Devices on 30th July 201315th December 2015

Product Details Supplier Info More products

Download document:

LTC3676 / LTC3676-1 data sheet - .PDF file.

Linear Technology has launched two PMIC power management products designed for portable processors including Freescale’s I.MX6, PXA, OMAP, ARM Cortex and other advanced portable microprocessor-based systems.

The LTC3676 and the LTC3676-1 contain four synchronous step-down DC/DC converters for core, memory, I/O and system-on-chip (SoC) rails, plus three 300mA low-dropout (LDO) regulators for low-noise analogue supplies, with dynamic control and sequencing.

The LTC3676-1 configures a 1.5A buck regulator for source/sink and tracking operation to support DDR memory termination. It also adds a VTTR reference output for DDR. These two-pin features replace the LDO4 enable and feedback pins of the LTC3676. Supporting the multiple regulators is a configurable power-sequencing capability, dynamic voltage scaling output voltage control, a pushbutton interface controller and regulator control via an I²C interface with extensive status reporting and an interrupt output.

The LTC3676’s four constant-frequency current-mode buck switching regulators are internally compensated and provide up to 2.5A, 2.5A, 1.5A and 1.5A output currents. They have complete I²C control, including selectable switching frequencies (2.25MHz or 1.125MHz) and phasing. The device’s power-on default frequency is 2.25MHz, with switch edge rate adjustment for reduced EMI.

Click on the link above to download the data sheet.

Key features and specifications

Quad I²C adjustable step-down DC/DC converters: 2.5A, 2.5A, 1.5A, 1.5A
Three 300mA LDO regulators (two adjustable)
DDR power with VTT and VTTR reference
Pushbutton on/off control with system reset
Independent enable pin-strap or I²C sequencing
Programmable autonomous power-down control
Dynamic voltage scaling
Power-good and reset functions
Selectable 2.25MHz or 1.12MHz switching frequency and phase
Always-alive 25mA LDO regulator
12μA standby current
40-lead 6 x 6mm QFN package

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More information

Linear Technology now part of Analog Devices

Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges.

Contact Supplier Visit our website 01628 477066

About Analog Devices
Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges. We enable our customers to interpret the world around us by intelligently bridging the physical and digital with unmatched technologies that sense, measure, power, connect and interpret. Visit http://www.analog.com

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