TPS54821RHLT

TEXAS INSTRUMENTS  TPS54821RHLT  直流-直流开关降压逐步递减稳压器, 可调, 4.5V-17V输入, 600mV-15V输出, 8A输出, VQFN-14

The is a synchronous Step-down Converter with hiccup current limit. It is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count and by selecting a high switching frequency, reducing the inductor"s footprint. The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand-alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open-drain power good pins. Cycle-by-cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current.

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Synchronizes to external clock

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Monotonic start-up into pre-biased outputs

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Adjustable slow start/power sequencing

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Power good output monitor for undervoltage and overvoltage

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Adjustable input undervoltage lockout

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Integrated 26/19mR MOSFETs

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0.6V ±1% Voltage reference over temperature

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2µA Low shutdown quiescent current

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Green product and no Sb/Br