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LM25575 Arkusz danych(PDF) 1 Page - Texas Instruments |
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LM25575 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 29 page BST SW COMP FB SS RAMP RT VCC VIN OUT IS GND LM25575 VIN VOUT SYNC SD LM25575, LM25575Q www.ti.com SNVS479F – JANUARY 2007 – REVISED FEBRUARY 2009 LM25575/LM25575Q SIMPLE SWITCHER® 42V, 1.5A Step-Down Switching Regulator Check for Samples: LM25575, LM25575Q 1 FEATURES PACKAGE 23 • LM25575Q is an Automotive Grade Product • HTSSOP-16EP (Exposed Pad) that is AEC-Q100 Grade 1 Qualified ( −40°C to + 125°C Operating Junction Temperature) DESCRIPTION The LM25575 is an easy to use SIMPLE • Integrated 42V, 330m Ω N-channel MOSFET SWITCHER® buck regulator which allows design • Ultra-Wide Input Voltage Range from 6V to 42V engineers to design and optimize a robust power • Adjustable Output Voltage as Low as 1.225V supply using a minimum set of components. Operating with an input voltage range of 6 - 42V, the • 1.5% Feedback Reference Accuracy LM25575 delivers 1.5A of continuous output current • Operating Frequency Adjustable Between with an integrated 330m Ω N-Channel MOSFET. The 50kHz and 1MHz with Single Resistor regulator utilizes an Emulated Current Mode • Master or Slave Frequency Synchronization architecture which provides inherent line regulation, tight load transient response, and ease of loop • Adjustable Soft-Start compensation without the usual limitation of low-duty • Emulated Current Mode Control Architecture cycles associated with current mode regulators. The • Wide Bandwidth Error Amplifier operating frequency is adjustable from 50kHz to • Built-in Protection 1MHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows • Automotive Grade Product Datasheet that is multiple IC’s from the LM(2)557x family to self- AEC-Q100 Grade 0 Qualified is Available Upon synchronize or to synchronize to an external clock. Request The LM25575 guarantees robustness with cycle-by- – ( −40°C to + 150°C Operating Junction cycle current limit, short-circuit protection, thermal Temperature) 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 APPLICATIONS dissipation. The LM25575 is supported by the full • Automotive suite of WEBENCH® On-Line design tools. • Industrial Simplified Application Schematic 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 WEBENCH is a registered trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2007–2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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