AX3519数据手册Axelite中文资料规格书

描述 Description

The AX3519 is a 1MHz constant frequency current mode PWM step-down converter. Itis ideal for portable equipment requiring very high current up to 4A from single-cellLithium-ion batteries while still achieving over 90% efficiency during peak load conditions.The AX3519 also can run at 100% duty cycle for low dropout operation, extending batterylife in portable systems while light load operation provides very low output ripple for noisesensitive applications. The AX3519 can supply up to 4A output load current from a 2.8V to5.5V input voltage and the output voltage can be regulated as low as 0.8V. The highswitching frequency minimizes the size of external components while keeping switchinglosses low. The internal slope compensation setting allows the device to operate withsmaller inductor values to optimize size and provide efficient operation. The AX3519 isavailable in adjustable (0.8V to VIN) output voltage. The device is available in SOP-8L-EPand TDFN-8 Pb-free packages. 

应用 Application

·DVB/STB
·LCD-TV