1FEATURES
2• LM5576Q0 is an Automotive Grade Product
that is AEC-Q100 Grade 0 Qualified
• -40°C to 150°C Operating Junction
Temperature
• Integrated 75V, 170mΩ N-Channel MOSFET
• Ultra-Wide Input Voltage Range from 6V to 75V
• Adjustable Output Voltage as Low as 1.225V
• 1.65% Feedback Reference Accuracy
• Operating Frequency Adjustable Between
50kHz and 500kHz with Single Resistor
• Master or Slave Frequency Synchronization
• Adjustable Soft-Start
• Emulated Current Mode Control Architecture
• Wide Bandwidth Error Amplifier
• Built-In Protection

APPLICATIONS
• Automotive
• Industrial

PACKAGE
• TSSOP-20EP (Exposed Pad)

DESCRIPTION
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 selfsynchronize
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.