The uP1542 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 uP1542 adopts 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 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 aforementioned functions, this part provides
customers a compact, high efficiency, well-protected and
cost-effective solutions. This part is available in PSOP-
8L and WDFN2x2-8L package.uP1542SSU8
uP1542TSU8
uP1542QSU8
uP1542VSU8
uP1542UDD8
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