The uP1504 is a compact synchronous-rectified buck controller specifically designed to operate from 5V or 12V supply voltage and to deliver high quality output voltage as low as 0.55V. This PSOP-8L device operates at fixed 200/ 300kHz frequency and provide an optimal level of integration to reduce size and cost of the power supply.
The uP1504 supports both tracking mode and stand-alone mode operation. The output voltage is tightly regulated to the external reference voltage from 0.55V to 3.0V at tracking mode or to internal 0.6V reference at stand-alone mode.
This controller integrates internal MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is built-in to simplify the circuit design and minimize external part count.
Other features include internal softstart, under voltage protection, over current protection and shutdown function. With aforementioned functions, this part provides customers a compact, high efficiency, well-protected and cost-effective solutions. This part is available in PSOP-8L package.