Description
The uP1542S 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 0.6V for uP1542S/U (linear OCP).
The uP1542S adopts a constant frequency, voltage mode control scheme, featuring easy-to-use, low external component count, and fast transient response. Fixed 300kHz operation provides an optimal level of integration to reduce the size and cost of the power supply.
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 soft start, over/under voltage protection, over current protection, and shutdown function. With the aforementioned functions, this part provides customers with compact, high-efficiency, well-protected, and cost-effective solutions. This part is available in PSOP- 8L and WDFN2x2-8L packages.
