1 Features
3.5A continuous output current capability
4.6V to 33V wide operating input range
Integrated 40V, 80mΩ high side and 40V, 50mΩlow side power MOSFET switches
Up to 97% efficiency
Soft-Start time can be adjusted by user to limit inrushcurrent at turn-on
Adjustable 80-kHz to 2-MHz Switching FrequencySet by an External Resistor (Leave pin ROSCfloating. Set frequency to 160 kHz, Connect ROSCto GND, Set frequency to 80 kHz)
Pulse Skipping Mode to Achieve High Light LoadEfficiency
Frequency jittering to ease EMI Issue
Peak Current-Mode Control
Cycle-by-Cycle Over Current Protection
Input over-voltage protection
Output Over-Voltage Protection
Output short protection
Over-Temperature Protection
Available in ESOP8 Package
2 Applications
9-V, 12-V and 24-V Distributed Power Systems
Consumer Applications Such as HomeAppliances,Set-Top Boxes, CPE Equipment, LCDDisplays, Peripherals, and Battery Chargers
Industrial and Car Entertainment Power Supplies
3 Description
The PL82052 is a monolithicsynchronous buck regulatorwith wide operating input voltage range from 4.6 to 33V.Current mode control with internal slope compensation isimplemented to reduce component count.
PL82052 also features a light load pulse skipping mode,which allows for a power loss reduction from the inputpower supply to the system at light loading.
The switching frequency of the converters can be set from80 kHz to 2 MHz with an external resistor.Frequency spread spectrum operation is introduced forEMI reduction.
A cycle-by-cycle current limit with frequency fold backprotects the IC at over loading condition.
PL82052uses external compensation, This simplifies theloop design for different frequencies
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