深圳市鑫丰微科技有限公司 李生13430 933944 座机0755-332 36165 QQ 1480 599669 大功率降压恒流芯片 内置MOS管大功率恒压芯片。 DC-DC降压驱动芯片 DC-DC升压恒流芯片 DC-DC降压恒压芯片 Features n Wide 3.6V to 24V Input Voltage Rang n 0.22V Constant Current Sense Voltage n Directly drive 3~8 Series 1W LED n Fixed 400KHz Switching Frequency n Max. 2A Switching Current Capability n Up to 92% efficiency n Excellent line and load regulation n EN PIN TTL shutdown capability n Internal Optimize Power MOSFET n Built in LED Open Protection n Built in Soft-Start Function n Built in Frequency Compensation n Built in Thermal Shutdown Function n Built in Current Limit Function n Available in SOP8 package