宁波PL8312E（DC-DC同步降压IC）

1 Features

? 1A continuous output current capability

? 4.5V to 36V wide operating input range with 33Vinput Over Voltage Protection

? Integrated 36V, 250mΩ high side and 36V, 140mΩlow 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 fromworking in high voltage and high current condition

? Output Over-Voltage Protection

? Output short protection with both high side currentlimit and low side current limit to protect the devicein hard short

? Over-Temperature Protection

? Pulse skip mode at light load to improve light loadefficiency

? Stable with Low ESR Ceramic Output Capacitors

? Fixed 500KHz Switching Frequency

? Fewest external components and intensive internalprotection features

? SOT23-6 Package

2 Applications

? USB car charger

? Portable charging device

? General purpose DC-DC conversion

3 Description

PL8312E is a monolithic 36V, 1A step-downswitching regulator. PL8312E integrates a 36V250mΩ high side and a 36V, 140mΩ low sideMOSFETs to provide 1A continuous load current overa 4.5V to 36V wide operating input voltage with 33Vinput over voltage protection. Peak current modecontrol provides fast transient responses andcycle-by-cycle current limiting.

PL8312E has configurable line drop compensation,configurable charging current limit. CC/CV modecontrol provides a smooth transition betweenconstant current charging and constant voltagecharging stages. Built-in soft-start prevents inrushcurrent at power-up.