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LSP5523

3A 27V Synchronous Buck Converter

Datasheet

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Description

The 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.

Feature(s)

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
Halogen and Antimony Free. “Green” Device

Application(s)

Distributed power systems
Networking systems
FPGA, DSP, ASIC power supplies
Green electronics/ appliances
Notebook computers

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
Type	Buck
Minimum Input Voltage (V)	4.5
Maximum Input Voltage (V)	27
Output Current (A)	3
Minimum Output Voltage (V)	0.925
Maximum Output Voltage (V)	0.8Vin
Quiescent Current Typ (µA)	1300
Shutdown Current Typ (µA)	0.3
Frequency Typ (kHz)	340
HS RDS(ON) (mΩ)	90
LS RDS(ON) (mΩ)	70

Technical Documents

Recommended Soldering Techniques

TN1.pdf