1、Features

• 3.1A continuous output current capability

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

• Sustain 40V input voltage spike

• Integrated 36V, 76mΩ high side and 36V, 52mΩ low side power MOSFET switches

• Up to 95% efficiency

• CV/CC Mode control (Constant voltage and constant current). Cycle-by-Cycle Current Limiting

• Configurable Line Drop Compensation with resistor

• Configurable Charging Current Limit with resistor

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

• Internal compensation to save external components

• Stable with Low ESR Ceramic Output Capacitors

• Fixed 300KHz Switching Frequency

• Input Under-Voltage Lockout. Output Over-Voltage Protection

• Over-Temperature Protection

• Soft start time is programmable using external capacitor

• 33V input voltage protection to protect power MOSFETs from working at high current ,high input voltage condition

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

• Thermally Enhanced ESOP-8 Package
  

2、Applications

• Car charger

• Portable charging device

• General purpose USB charger

• General purpose DC-DC conversion

3、Description

PL83222 integrates a high efficiency synchronous step-down switching regulator, which includes a 36V,  76mΩ high side and a 36V, 52mΩ low side MOSFETs to provide 3.1A continuous load current over 4.5V to 30V wide operating input voltage with 33V input over voltage protection. Peak current mode control provides fast transient responses and cycle-by-cycle current limiting. 

PL83222 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.