中山PL8322(DC-DC同步降压IC)

1 Features

? 3.1A continuous output current capability

? 6.5V to 36V wide operating input range with inputOver Voltage Protection

? Integrated 36V, 76mΩ high side and 36V, 52mΩ lowside power MOSFET switches

? Up to 95% efficiency

? CV/CC Mode control (Constant voltage andconstant 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 100KHz Switching Frequency

? Input Under-Voltage Lockout. Output Over-VoltageProtection

? Over-Temperature Protection

? Soft start time is programmable using externalcapacitor

? 33V input voltage protection to protect powerMOSFETs from working at high current ,high inputvoltage condition

? Pulse skip mode at light load to improve light loadefficiency

? Thermally Enhanced ESOP-8 Package

2 Applications

? Car charger

? Portable charging device

? General purpose USB charger

? General purpose DC-DC conversion

3 Description

PL8322 integrates a high efficiency synchronousstep-down switching regulator, which includes a 36V,76mΩ high side and a 36V, 52mΩ low sideMOSFETs to provide 3.1A continuous load currentover 6.5V to 36V wide operating input voltage with33V input over voltage protection. Peak current modecontrol provides fast transient responses andcycle-by-cycle current limiting. PL8322 hasconfigurable line drop compensation, configurablecharging current limit. CC/CV mode control providesa smooth transition between constant currentcharging and constant voltage charging stages.Built-in soft-start prevents inrush current at power-up.