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.