3A 27V Synchronous Buck Converter - DIODES
Description
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.
LSP5523
Document number: DS44073 Rev.
7 - 2
1 of 17 www.
diodes.
com
May 2022
© 2022 Copyright Diodes Incorporated.
All Rights Reserved.
Block Diagram
LSP5523
1 .
1 V FB 5
0 .
3 V
SS 8
0 .
925 V
COMP 6 EN 7
2.
5 V
1.
5 V
OVP
RAMP
O S C ILLA T O R 34 0/120 K H z C LK
ERROR A M P LIF IE R
6uA
CURRENT SENSE
A M P LIF IE R
SQ RQ CURRENT C O M PAR ATO R
2 V IN 5V
1 BS 3 SW
EN OK LO C KO U T C O M PAR ATO R
SHUTDOW N C O M PAR ATO R
1.
2V
4 OVP IN < 4.
10 V
GND
IN
IN T E R N...
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