LTC3676IUJ#PBF

LINEAR TECHNOLOGY  LTC3676IUJ#PBF  芯片, 电源管理方案, QFN-40

The is a complete Power Management Solution for advanced portable application processor-based systems. The device contains four synchronous step-down DC/DC converters for core, memory, I/O, system on-chip SoC rails and three 300mA LDO regulators for low noise analog supplies. The LTC3676-1 has a ±1.5A buck regulator configured to support DDR termination plus a VTTR reference output. An I2C serial port is used to control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operating modes and status reporting. Regulator start-up is sequenced by connecting outputs to enable pins in the desired order or via the I2C port. System power-on, power-off and reset functions are controlled by pushbutton interface, pin inputs or I2C. The LTC3676 supports i.MX, PXA and OMAP processors with eight independent rails at appropriate power levels.

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Quad I2C adjustable high efficiency step down

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DDR power solution with VTT and VTTR reference

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Pushbutton ON/OFF control with system reset

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Independent enable pin-strap or I2C sequencing

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Programmable autonomous power-down control

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Dynamic voltage scaling

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Power good and reset functions

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Selectable 2.25 or 1.12MHz switching frequency

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Always alive 25mA LDO regulator

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12µA Standby current