LTC3427EDC#TRMPBF

LINEAR TECHNOLOGY  LTC3427EDC#TRMPBF  直流-直流开关升压逐步递增稳压器, 可调, 1.8V-5V输入, 1.8V-5.25V输出, 0.5A输出, DFN-6

The is a high-efficiency fixed frequency step-up DC-to-DC converter with true output disconnect. Requiring minimal external components, the LTC3427 operates from an input voltage as low as 1.8V. The LTC3427 contains an internal 0.525R N-channel MOSFET switch and a 0.575R P-channel MOSFET synchronous rectifier, which enables it to supply 200mA at 3.3V from a 2-cell alkaline battery input. The LTC3427 limits inrush current during start-up and provides a soft-start of VOUT. A switching frequency of 1.25MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors and produces very low VOUT ripple. The current-mode PWM design is internally compensated, reducing external parts count. Anti-ringing control reduces EMI in discontinuous mode operation. The LTC3427 also features low shutdown current of under 1µA and thermal shutdown.

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Inrush current limiting and soft-start

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Output disconnect in shutdown

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Low noise PWM

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Internal synchronous rectifier

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Logic controlled shutdown <1µA

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Anti-ringing control minimizes EMI

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Tiny external components

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Short-circuit protection

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Up to 94% high efficiency