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LMR10515 データシート(PDF) 1 Page - Texas Instruments |
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LMR10515 データシート(HTML) 1 Page - Texas Instruments |
1 / 26 page LMR10515 www.ti.com SNVS728C – OCTOBER 2011 – REVISED APRIL 2013 LMR10515 SIMPLE SWITCHER® 5.5Vin, 1.5A Step-Down Voltage Regulator in SOT-23 and WSON Check for Samples: LMR10515 1 FEATURES PERFORMANCE BENEFITS 23 • Input Voltage Range of 3V to 5.5V • Extremely easy to use • Output Voltage Range of 0.6V to 4.5V • Tiny overall solution reduces system cost • Output Current up to 1.5A DESCRIPTION • 1.6MHz (LMR10515X) and 3 MHz (LMR10515Y) The LMR10515 regulator is a monolithic, high Switching Frequencies frequency, PWM step-down DC/DC converter in a 5 • Low Shutdown Iq, 30 nA Typical pin SOT-23 and a 6 Pin WSON package. It provides • Internal Soft-Start all the active functions to provide local DC/DC conversion with fast transient response and accurate • Internally Compensated regulation in the smallest possible PCB area. With a • Current-Mode PWM Operation minimum of external components, the LMR10515 is • Thermal Shutdown easy to use. The ability to drive 1.5A loads with an internal 130 m Ω PMOS switch results in the best • SOT-23 (2.92 x 2.84 x 1 mm) and WSON power density available. The world-class control (3 x 3 x 0.8 mm) Packaging circuitry allows on-times as low as 30ns, thus • Fully Enabled for WEBENCH® Power Designer supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down APPLICATIONS to the minimum output voltage of 0.6V. The LMR10515 is internally compensated, so it is simple • Point-of-Load Conversions from 3.3V, and 5V to use and requires few external components. Rails Switching frequency is internally set to 1.6 MHz, or • Space Constrained Applications 3.0 MHz, allowing the use of extremely small surface • Battery Powered Equipment mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies up to 93% • Industrial Distributed Power Applications are easy to achieve. External shutdown is included, • Power Meters featuring an ultra-low stand-by current of 30 nA. The • Portable Hand-Held Instruments LMR10515 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection. 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 © 2011–2013, 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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