1FEATURES
23• LM5575Q is an Automotive Grade Product that
is AEC-Q100 Grade 1 Qualified (−40°C to +
125°C Operating Junction Temperature)
• Integrated 75V, 330mΩ N-channel MOSFET
• Ultra-wide Input Voltage Range from 6V to 75V
• Adjustable Output Voltage as Low as 1.225V
• 1.5% 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
• Automotive Grade Product Datasheet that is
AEC-Q100 Grade 0 Qualified is Available Upon
Request.
– (−40°C to + 150°C Operating Junction
Temperature)

APPLICATIONS
• Automotive
• Industrial

DESCRIPTION
The LM5575 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 LM5575 delivers 1.5A of
continuous output current with an integrated 330mΩ
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 LM5575
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 HTSSOP-16 package featuring an
exposed die attach pad for thermal dissipation. The
LM5575 is supported by the full suite of WEBENCH®
On-Line design tools.

PACKAGE
• HTSSOP-16EP (Exposed Pad)