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?1 Features

? 1A continuous output current capability

? 4.5V to 36V wide operating input range with 33V

input Over Voltage Protection

? Integrated 36V, 250mΩ high side and 36V, 140mΩ

low side power MOSFET switches

? Up to 97% 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 with both high side current

limit and low side current limit to protect the device

in hard short

? Over-Temperature Protection

? Pulse skip mode at light load to improve light load

efficiency

? Stable with Low ESR Ceramic Output Capacitors

? Fixed 150KHz Switching Frequency

? Fewest external components and intensive internal

protection features

? SOT23-6 Package

2 Applications

? USB car charger

? Portable charging device

? General purpose DC-DC conversion

3 Description

PL8310E is a monolithic 36V, 1A step-down

switching regulator. PL8310E integrates a 36V

250mΩ high side and a 36V, 140mΩ low side

MOSFETs to provide 1A continuous load current over

a 4.5V to 36V wide operating input voltage with 33V

input over voltage protection. Peak current mode

control provides fast transient responses and

cycle-by-cycle current limiting.

PL8310E has configurable line drop compensation,

configurable charging current limit. CC/CV mode

control provides a smooth transition between

constant current charging and constant voltage

charging stages. Built-in soft-start prevents inrush

current at power-up.