LTC3621IDCB#TRMPBF

LINEAR TECHNOLOGY  LTC3621IDCB#TRMPBF  直流-直流开关降压逐步递减稳压器, 可调, 2.7V-17V输入, 17V-0.6V输出, 1A输出, DFN-6

The is a high-efficiency synchronous monolithic Step-down Regulator for use with portable-handheld scanners. The switching frequency is fixed to 1MHz with a ±40% synchronizing range. The regulator features ultralow quiescent current and high efficiencies over a wide VOUT range. The step-down regulator operates from an input voltage range of 2.7 to 17V and provides an adjustable output range from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to tradeoff ripple noise for light load efficiency. Burst Mode® operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple. The MODE pin can also be used to allow the user to sync the switching frequency to an external clock.

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Full dropout operation with low IQ

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Current-mode operation for excellent line and load transient response

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Synchronizable to external clock

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Internal compensation and soft-start

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Over-temperature protection

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95% Maximum efficiency

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<3.5µA Low quiescent current in zero-current shutdown

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±1% Output voltage accuracy