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.
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