國半LM3423芯片適用于高達75V的輸入電壓,可升降壓應(yīng)用,
可出高達20個1W串接 LED,應(yīng)用太陽能路燈等,效率90以上;
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
SHENZHEN TEL:(0)13760313075;
Email:ZHEB8110@163.COM;
MSN:ZHEB8110@hotmail.com;
