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LM3103 Fiches technique(PDF) 1 Page - Texas Instruments |
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LM3103 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 20 page LM3103 www.ti.com SNVS523E – SEPTEMBER 2007 – REVISED NOVEMBER 2009 LM3103 SIMPLE SWITCHER® Synchronous 1MHz 0.75A Step-Down Voltage Regulator Check for Samples: LM3103 1 FEATURES KEY SPECIFICATIONS 2 • Low Component Count and Small Solution • Input Voltage Range 4.5 V to 42 V Size • 0.75 A Output Current • Stable with Ceramic and Other Low ESR • 0.6V, ±2% Reference Capacitors • Integrated Dual N-Channel Main and • No Loop Compensation Required Synchronous MOSFETs • High Efficiency at a Light Load by DCM • Thermally Enhanced HTSSOP-16 Package Operation • Pre-bias Startup DESCRIPTION The LM3103 Synchronously Rectified Buck Converter • Ultra-Fast Transient Response features all required functions to implement a highly • Programmable Soft-Start efficient and cost effective buck regulator. It is • Programmable Switching Frequency up to 1 capable of supplying 0.75A to loads with an output MHz voltage as low as 0.6V. Dual N-Channel synchronous MOSFET switches allow a low component count, thus • Valley Current Limit reducing complexity and minimizing board size. • Thermal Shutdown Different from most other COT regulators, the • Output Over-Voltage Protection LM3103 does not rely on output capacitor ESR for • Precision Internal Reference for an Adjustable stability, and is designed to work exceptionally well Output Voltage Down to 0.6V with ceramic and other very low ESR output capacitors. It requires no loop compensation, results TYPICAL APPLICATIONS in a fast load transient response and simple circuit implementation. The operating frequency remains • 5VDC, 12VDC, 24VDC, 12VAC, and 24VAC nearly constant with line variations due to the inverse Systems relationship between the input voltage and the on- • Embedded Systems time. The operating frequency can be externally • Industrial Control programmed up to 1 MHz. Protection features include VCC under-voltage lock-out, output over-voltage • Automotive Telematics and Body Electronics protection, thermal shutdown, and gate drive under- • Point of Load Regulators voltage lock-out. The LM3103 is available in the • Storage Systems thermally enhanced HTSSOP-16 package. • Broadband Infrastructure • Direct Conversion from 2/3/4 Cell Lithium Batteries Systems 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 All 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. |
Numéro de pièce similaire - LM3103_14 |
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Description similaire - LM3103_14 |
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