Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3151 Datenblatt(PDF) 1 Page - Texas Instruments |
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LM3151 Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 26 page LM3151, LM3152, LM3153 www.ti.com SNVS562G – SEPTEMBER 2008 – REVISED MARCH 2011 LM3151/LM3152/LM3153 SIMPLE SWITCHER® CONTROLLER, High Input Voltage Synchronous Step-Down Check for Samples: LM3151, LM3152, LM3153 1 FEATURES DESCRIPTION The LM3151/2/3 SIMPLE SWITCHER Controller is an 234 • PowerWise™ Step-down Controller easy to use and simplified step down power controller • 6V to 42V Wide Input Voltage Range capable of providing up to 12A of output current in a • Fixed Output Voltage of 3.3V typical application. Operating with an input voltage range from 6V-42V, the LM3151/2/3 features a fixed • Fixed Switching Frequencies of 250 kHz/500 output voltage of 3.3V, and features switching kHz/750 kHz frequencies of 250 kHz, 500 kHz, and 750 kHz. The • No Loop Compensation Required synchronous architecture provides for highly efficient • Fully WEBENCH® Enabled designs. The LM3151/2/3 controller employs a Constant On-Time (COT) architecture with a • Low External Component Count proprietary Emulated Ripple Mode (ERM) control that • Constant On-Time Control allows for the use of low ESR output capacitors, • Ultra-Fast Transient Response which reduces overall solution size and output voltage ripple. The Constant On-Time (COT) • Stable with Low ESR Capacitors regulation architecture allows for fast transient • Output Voltage Pre-bias Startup response and requires no loop compensation, which • Valley Current Limit reduces external component count and reduces design complexity. • Programmable Soft-start Fault protection features such as thermal shutdown, TYPICAL APPLICATIONS under-voltage lockout, over-voltage protection, short- circuit protection, current limit, and output voltage pre- • Telecom bias startup allow for a reliable and robust solution. • Networking Equipment The LM3151/2/3 SIMPLE SWITCHER concept • Routers provides for an easy to use complete design using a • Security Surveillance minimum number of external components and TI’s • Power Modules WEBENCH online design tool. WEBENCH provides design support for every step of the design process and includes features such as external component calculation with a new MOSFET selector, electrical simulation, thermal simulation, and Build-It boards for prototyping. 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 PowerWise is a trademark of Texas Instruments. 3 SIMPLE SWITCHER, WEBENCH are registered trademarks of Texas Instruments. 4 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2011, 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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