LT3510IFE#PBF

LINEAR TECHNOLOGY  LT3510IFE#PBF  芯片, 降压稳压器, 双路, 2A, 2.5MHZ, 20TSSOP

The is a dual current mode PWM step-down DC/DC Converter with two internal 2.5A switches. Independent input voltage, feedback, soft-start and power good pins for each channel simplify complex power supply tracking/sequencing requirements. Both converters are synchronized to either a common external clock input or a resistor programmable fixed 250kHz to 1.5MHz internal oscillator. At all frequencies, a 180° phase relationship between channels is maintained, reducing voltage ripple and component size. Programmable frequency allows for optimization between efficiency and external component size. Minimum input-to-output voltage ratios are improved by allowing the switch to stay on through multiple clock cycles, only switching off when the boost capacitor needs recharging, resulting in ~95% maximum duty cycle. Each output can be independently disabled using its own soft-start pin or by using the SHDN pin the entire part can be placed in a low quiescent current shutdown mode.

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Independent supply to each regulator

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Antiphase switching

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Outputs can be paralleled

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Independent, sequential, ratiometric or absolute tracking between outputs

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Independent soft-start and power good pins

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Enhanced short-circuit protection

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95% Maximum duty cycle low dropout

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<10µA Low shutdown current