LSP5527
2A 27V Synchronous Buck Converter
General Description
The LSP5527 is a monolithic synchronous buck regulator. Th...
LSP5527
2A 27V Synchronous Buck Converter
General Description
The LSP5527 is a monolithic synchronous buck
regulator. The device integrates 95 mΩ MOSFETS that provide 2A 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
2A Output Current Wide 4.5V to 27V Operating Input Range Integrated Power MOSFET Switches Output Adjustable from 0.925V to 0.8Vin Up to 96% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Fixed 340KHZ Frequency Cycle by Cycle Over Current Protection Short Circuit Protection Input Under Voltage Lockout Package: SOP-8L
Applications
Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers
Please be aware that an Important Notice concerning availability, disclaimers, and use in critical applications of LSC products is at the end of this document.
LSP5527 Rev. 1.1
1 of 15 www.liteonsemi.com
2014/8/27
LSP5527
Block Diagram
FB 5
1.1V
0.3V
SS 8 0.925V
COMP 6 EN 7
2.5V
1.5V
2A 27V Synchronous Buck Converter
OVP
RAMP
OSCILLATOR
340/120KHz CLK
ERROR AMPLIFIER
6uA
CURRENT SENSE
AMPLIFIER
SQ RQ CURRENT COMPARATOR
2 VIN 5V
1 BS
3 SW
EN OK LOCKOUT COMPARATOR
SHUTDOWN COMPARATOR
1.2V
OVP
4 GND
IN<4.10V
IN
INTERNAL
REGULATORS
Ordering Inf...