LSP5523

Document number: DS44073 Rev. 7 - 2

1 of 17

www.diodes.com

May 2022

© 2022 Copyright Diodes Incorporated. All Rights Reserved.

LSP5523

3A 27V Synchronous Buck Converter

General Description

The

DIODES™ LSP5523 is a monolithic synchronous buck regulator. The device integrates 90mΩ MOSFETS

that provide 3A continuous load current over a wide operating input voltage of 4.5V to 27V. Current mode

control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents

inrush current at turn on.

Features



3A Output Current



Wide 4.5V to 27V Operating Input Range



Fixed 340KHZ Frequency



Integrated Power MOSFET Switches



Output Adjustable from 0.925V to 0.8Vin



Up to 93% Efficiency



Programmable Soft-Start



Stable with Low ESR Ceramic Output Capacitors



Cycle by Cycle Over Current Protection



Short Circuit Protection



Input Under Voltage Lockout



Package: ESOP-8L



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)



Halogen and Antimony Free. “Green” Device (Note 3)

Applications



Distributed power systems



Networking systems



FPGA, DSP, ASIC power supplies



Green electronics/ appliances



Notebook computers

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3)

compliant.

2. See https://www.diodes.com/quality/lead-free/ for more

information about Diodes Incorporated’s definitions of Halogen- and

Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-

free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine

(<1500ppm total Br + Cl) and <1000ppm antimony compounds.