Datasheet Texas Instruments LM2854MHX-500/NOPB — 数据表

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SNVS560E – MARCH 2008 – REVISED OCTOBER 2017 LM2854 4-A 500-kHz / 1-MHz Synchronous Buck Regulator
1 Features 3 Description The LM2854 PowerWiseв„ў buck regulator is a 500kHz or 1-MHz step-down switching voltage regulator
capable of driving up to a 4-A load with exceptional
power conversion efficiency, line and load regulation,
and output accuracy. The LM2854 can accept an
input voltage rail between 2.95 V and 5.5 V, and
deliver an adjustable and highly accurate output
voltage as low as 0.8 V. Externally established softstart with a small capacitor facilitates controlled startup, and the LM2854 is capable of starting gracefully
into a pre-biased output voltage. Partial internal
compensation reduces the number of external
passive components and PC board space typically
necessary in a voltage mode buck converter
application, yet preserving flexibility to deal with
ceramic and/or electrolytic based load capacitors.
Lossless cycle-by-cycle peak current limit is used to
protect the load from an overcurrent or short-circuit
fault, and an enable comparator simplifies …