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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)