MP2235 datasheet(12/21 Pages) MPS

部品番号	MP2235

部品情報	High-Efficiency, 3A, 16V, 800kHz Synchronous, Step-Down Converter

PDF	21 Pages

Scroll/Zoom	100%

メーカー	MPS [Monolithic Power Systems]

ホームページ	http://www.monolithicpower.com

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12 / 21 page

MP2235

– SYNCHRONOUS STEP-DOWN CONVERTER

MP2235 Rev. 1.0

www.MonolithicPower.com

5/16/2013

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

Figure 5: Internal Bootstrap Charging Circuit

Startup and Shutdown

If both VIN and VEN exceed their respective

thresholds, the chip starts. The reference block

starts first, generating stable reference voltage

and currents, and then the internal regulator is

enabled. The regulator provides a stable supply

for the remaining circuitries.

Three events can shut down the chip: VEN low,

VIN low, and thermal shutdown. During the

shutdown procedure, the signaling path is first

blocked to avoid any fault triggering. The

COMP voltage and the internal supply rail are

then pulled down. The floating driver is not

subject to this shutdown command.

MP2235 データシート(PDF) 12 Page - Monolithic Power Systems