The LM5576Q0 is an easy to use SIMPLE SWITCHER buck regulator which allows design
engineers to design and optimize a robust power supply using a minimum set of components. Operating
with an input voltage range of 6 – 75V, the LM5576Q0 delivers 3A of continuous output current with
an integrated 170mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture
which provides inherent line regulation, tight load transient response, and ease of loop
compensation without the usual limitation of low-duty cycles associated with current mode
regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of
size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the
LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576Q0 ensures
robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and
remote shut-down. The device is available in a power enhanced TSSOP-20 package featuring an exposed
die attach pad for thermal dissipation. The LM5576Q0 is supported by the full suite of
WEBENCH On-Line
design tools.
