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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.