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LMR10520 データシート(PDF) 1 Page - Texas Instruments |
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LMR10520 データシート(HTML) 1 Page - Texas Instruments |
1 / 26 page 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 40 50 60 70 80 90 100 LOAD CURRENT (A) 1.8Vout 3.3Vout 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 40 50 60 70 80 90 100 LOAD CURRENT (A) 1.8Vout 3.3Vout LMR10520 www.ti.com SNVS730A – OCTOBER 2011 – REVISED OCTOBER 2011 LMR10520 SIMPLE SWITCHER® 5.5Vin, 2.0A Step-Down Voltage Regulator in WSON Check for Samples: LMR10520 1 FEATURES DESCRIPTION The LMR10520 regulator is a monolithic, high • Input Voltage Range of 3V to 5.5V frequency, PWM step-down DC/DC converter in a 6 • Output Voltage Range of 0.6V to 4.5V Pin WSON package. It provides all the active • Output Current up to 2A functions to provide local DC/DC conversion with fast transient response and accurate regulation in the • 1.6MHz (LMR10520X) and 3 MHz (LMR10520Y) smallest possible PCB area. With a minimum of Switching Frequencies external components, the LMR10520 is easy to use. • Low Shutdown Iq, 30 nA Typical The ability to drive 2.0A loads with an internal 150 • Internal Soft-Start m Ω PMOS switch results in the best power density available. The world-class control circuitry allows on- • Internally Compensated times as low as 30ns, thus supporting exceptionally • Current-Mode PWM Operation high frequency conversion over the entire 3V to 5.5V • Thermal Shutdown input operating range down to the minimum output voltage of 0.6V. The LMR10520 is internally • WSON-6 (3 x 3 x 0.8 mm) Packaging compensated, so it is simple to use and requires few • Fully Enabled for WEBENCH® Power Designer external components. Even though the operating frequency is high, efficiencies up to 93% are easy to PERFORMANCE BENEFITS achieve. External shutdown is included, featuring an ultra-low stand-by current of 30 nA. The LMR10520 • Extremely Easy to Use utilizes current-mode control and internal • Tiny Overall Solution Reduces System Cost compensation to provide high-performance regulation over a wide range of operating conditions. Additional APPLICATIONS features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal • Point-of-Load Conversions from 3.3V, and 5V shutdown, and output over-voltage protection. Rails • Space Constrained Applications • Battery Powered Equipment • Industrial Distributed Power Applications • Power Meters • Portable Hand-Held Instruments System Performance Efficiency vs Load Current - "X" VIN = 5V Efficiency vs Load Current - "Y" VIN = 5V Figure 1. Figure 2. 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. PRODUCTION DATA information is current as of publication date. Copyright © 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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同様の説明 - LMR10520 |
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