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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM2736 датащи(PDF) 1 Page - National Semiconductor (TI) |
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LM2736 датащи(HTML) 1 Page - National Semiconductor (TI) |
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1 / 22 page  LM2736 Thin SOT23 750mA Load Step-Down DC-DC Regulator General Description The LM2736 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT23 package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regu- lation in the smallest possible PCB area. With a minimum of external components and online design support through WEBENCH™, the LM2736 is easy to use. The ability to drive 750mA loads with an internal 350m Ω NMOS switch using state-of-the-art 0.5µm BiCMOS technol- ogy results in the best power density available. The world class control circuitry allows for on-times as low as 13ns, thus supporting exceptionally high frequency conversion over the entire 3V to 18V input operating range down to the minimum output voltage of 1.25V. Switching frequency is internally set to 550kHz (LM2736Y) or 1.6MHz (LM2736X), allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30nA. The LM2736 utilizes current-mode control and internal compensation to provide high- performance regulation over a wide range of operating con- ditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, ther- mal shutdown, and output over-voltage protection. Features n Thin SOT23-6 package n 3.0V to 18V input voltage range n 1.25V to 16V output voltage range n 750mA output current n 550kHz (LM2736Y) and 1.6MHz (LM2736X) switching frequencies n 350m Ω NMOS switch n 30nA shutdown current n 1.25V, 2% internal voltage reference n Internal soft-start n Current-Mode, PWM operation n WEBENCH online design tool Applications n Local Point of Load Regulation n Core Power in HDDs n Set-Top Boxes n Battery Powered Devices n USB Powered Devices n DSL Modems n Notebook Computers Typical Application Circuit Efficiency vs Load Current "X" V IN = 5V, VOUT = 3.3V 20124201 20124251 WEBENCH™ is a trademark of Transim. October 2004 © 2004 National Semiconductor Corporation DS201242 www.national.com |
Аналогичный номер детали - LM2736 |
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Аналогичное описание - LM2736 |
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