CN5208是一款PWM，550KHz 降压DC-DC芯片
Features:
Wide Input Voltage: 5V to 32V
Operating with an External P-Channel MOSFET
Output Current Up to 4A
Fixed Switching Frequency: 550KHz
Fixed Output Voltage with 1% Accuracy
Efficiency up to 95%
Cycle-by-Cycle Current Limit
Overvoltage protection
Frequency Foldback for Output Short Circuit Protection
Built-in Soft Start
High Efficiency at Light Load with Pulse Skipping Mode
Shutdown Curent: 15uA typical at 15V
Operating Ambient Temperature
－40℃ to ＋85℃
Available in 8-Pin SOP Package
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太多可以选择的了。