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1 Features

• 600mA continuous output current capability

• 4.5V to 55V wide operating input range

• Integrated 80V, 550mΩ high side and 80V, 350mΩ low side power MOSFET switches

• Up to 95 efficiency

• Internal Soft-Start limits the inrush current at turn-on

• Internal compensation to save external components

• Input Under-Voltage Lockout

• Input over-voltage protection to protect device from working in high voltage and high current condition

• Output Over-Voltage Protection

• Output short protection

• Over-Temperature Protection

• Pulse skip mode at light load to improve light load efficiency

• Stable with Low ESR Ceramic Output Capacitors

• Fixed 150k Switching Frequency

• Fewest external components and intensive internal protection features

• SOT23-6L,SOP-8 Package

2 Applications

• Power Meters

• Distributed Power Systems

• Battery Chargers

• Pre-Regulator for Linear Regulators

• WLED Drivers

• ?

• 3 Description

  PL88101 is a monolithic 55V, 600mA step-down switching regulator. PL88101 integrates a 80V 550mΩ high side and a 80V, 350mΩ low side MOSFETs to provide 600mA continuous load current over a 4.5V to 55V wide operating input voltage. Peak current mode control provides fast transient responses and cycle-by-cycle current limiting.