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LM3475 Folha de dados(PDF) 1 Page - Texas Instruments |
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LM3475 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 21 page VOUT = 2.5V/2A CIN COUT RFB1 RFB2 L1 D1 Q1 10 PF 100 PF 10 PH 1k 2.15k Si2343 LM3475 VIN EN GND PGATE FB 1 2 3 4 5 CFF 1 nF VIN = 5V LM3475 www.ti.com SNVS239A – OCTOBER 2004 – REVISED JANUARY 2005 LM3475 Hysteretic PFET Buck Controller Check for Samples: LM3475 1 FEATURES DESCRIPTION 2 • Easy to Use Control Methodology The LM3475 is a hysteretic P-FET buck controller • 0.8V to VIN Adjustable Output Range designed to support a wide range of high efficiency • High Efficiency (90% Typical) applications in a very small SOT-23-5 package. The hysteretic control scheme has several advantages, • ±0.9% (±1.5% Over Temp) Feedback Voltage including simple system design with no external • 100% Duty Cycle Capable compensation, stable operation with a wide range of • Maximum Operating Frequency up to 2MHz components, and extremely fast transient response. Hysteretic control also provides high efficiency • Internal Soft-Start operation, even at light loads. The PFET architecture • Enable Pin allows for low component count as well as 100% duty • SOT-23-5 Package cycle and ultra-low dropout operation. APPLICATIONS • TFT Monitor • Auto PC • Vehicle Security • Navigation Systems • Notebook Standby Supply • Battery Powered Portable Applications • Distributed Power Systems Typical Application Circuit 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 © 2004–2005, 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. |
Nº de peça semelhante - LM3475_14 |
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Descrição semelhante - LM3475_14 |
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