描述 Description

The AX3504A is a 1.2MHz constant frequency current mode PWM step-downconverter. It is ideal for portable equipment requiring very high current up to 2A fromsingle-cell Lithium-ion batteries while still achieving over 90% efficiency during peak loadconditions. The AX3504A also can run at 100% duty cycle for low dropout operation,extending battery life in portable systems while light load operation provides very low outputripple for noise sensitive applications. The AX3504A can supply up to 2A output loadcurrent from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as0.6V. The high switching frequency minimizes the size of external components whilekeeping switching losses low. The internal slope compensation setting allows the device tooperate with smaller inductor values to optimize size and provide efficient operation. TheAX3504A is available in adjustable (0.6V to VIN) output voltage. The device is available inSOP-8L Pb-free packages.