1 Features
1• AEC-Q100-qualified for automotive applications:
– Device temperature grade 1: –40°C to +125°C
operating temperature
– Device temperature grade 0: –40°C to +150°C
operating temperature
– Device HBM ESD classification level 2
• Integrated 75-V, 330-mΩ N-channel MOSFET
• Ultra-wide input-voltage from 6 V to 75 V
• Adjustable output voltage as low as 1.225 V
• 1.65% Feedback reference accuracy
• Operating frequency adjustable between 50 kHz
and 500 kHz with single resistor
• Master or slave frequency synchronization
• Adjustable soft start
• Emulated current-mode-control architecture
• Wide bandwidth error amplifier
• Built-in protection
• Create a custom design using the LM5575-Q1
with the WEBENCH® Power Designer

2 Applications
• Automotive
• Industrial

3 Description
The LM5575-Q1 is an easy-to-use buck regulator that
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 V to 75 V, the LM5575-Q1 delivers 1.5 A of
continuous output current with an integrated 330-mΩ
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 50 kHz to 500 kHz to allow
optimization of size and efficiency. The LM5575-Q1
ensures robustness with cycle-by-cycle current limit,
short-circuit protection, thermal shutdown, and
remote shutdown. The device is available in a power
enhanced 16-pin HTSSOP package featuring an
exposed die attach pad for thermal dissipation. The
LM5575-Q1 is supported by the full suite of
WEBENCH® on-Line design tools. For AEC-Q100
grade 1 and grade 0 orderable numbers, see the
orderable addendum at the end of this data sheet.