应用LED太阳能路灯方案

LM3423 LED驱动器的技术规格
这款最新推出的美国国家半导体LM3423芯片适用于高达75V的输入电压,可升降压应用,可出高达20个1W串接 LED,
       VIN range from 4.5V to 75V
 2% 1.25V Internal reference voltage
 Current sense voltage adjustable from 50mV to 1.25V
 High side current sensing
 750mA peak MOSFET gate driver
 Dimming MOSFET gate driver
 Input under-voltage protection
 Output over-voltage protection
 LED ready flag
 Low shutdown current, Iq < 1A
 Fast (50 KHz) PWM dimming input  
 Cycle-by-cycle current limit
 Programmable running frequency
 Fault timer pin
 TSSOP-20 package
        Applications
 LED Drivers
 Constant Current Buck-Boost Regulator
 Constant Current Boost Regulator
 Constant Current Flyback Regulator
 Constant Current SEPIC Converter
 Thermo-Electric Cooler (Peltier) Driver
TEL:13760313075;
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