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LMR12010 Datasheet(PDF) 1 Page - Texas Instruments |
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LMR12010 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 26 page LMR12010 VIN VIN EN BOOST SW FB GND VOUT C3 L1 C1 C2 R1 R2 D1 D2 ON OFF LMR12010 www.ti.com SNVS731A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 LMR12010 SIMPLE SWITCHER® 20Vin, 1A Step-Down Voltage Regulator in SOT-23 Check for Samples: LMR12010 1 FEATURES DESCRIPTION The LMR12010 regulator is a monolithic, high 23 • Input Voltage Range of 3V to 20V frequency, PWM step-down DC/DC converter in a 6- • Output Voltage Range of 0.8V to 17V pin Thin SOT-23 package. It provides all the active • Output Current Up to 1A functions to provide local DC/DC conversion with fast transient response and accurate regulation in the • 1.6MHz (LMR12010X) and 3 MHz (LMR12010Y) smallest possible PCB area. Switching Frequencies With a minimum of external components and online • Low Shutdown Iq, 30 nA Typical design support through WEBENCH, the LMR12010 is • Internal Soft-start easy to use. The ability to drive 1A loads with an • Internally Compensated internal 300m Ω NMOS switch using state-of-the-art • Current-Mode PWM Operation 0.5µm BiCMOS technology results in the best power density available. The world class control circuitry • Thermal Shutdown allows for on-times as low as 13ns, thus supporting • Thin SOT-23-6 Package (2.97 x 1.65 x 1mm) exceptionally high frequency conversion over the • Fully Enabled for WEBENCH® Power Designer entire 3V to 20V input operating range down to the minimum output voltage of 0.8V. Switching frequency is internally set to 1.6 MHz (LMR12010X) or 3 MHz APPLICATIONS (LMR12010Y), allowing the use of extremely small • Point-of-Load Conversions from 3.3V, 5V, and surface mount inductors and chip capacitors. Even 12V Rails though the operating frequencies are very high, • Space Constrained Applications efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by • Battery Powered Equipment current of 30nA. The LMR12010 utilizes current-mode • Industrial Distributed Power Applications control and internal compensation to provide high- • Power Meters performance regulation over a wide range of operating conditions. Additional features include • Portable Hand-Held Instruments internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and PERFORMANCE BENEFITS output over-voltage protection. • Extremely Easy to Use • Tiny Overall Solution Reduces System Cost 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 SIMPLE SWITCHER, WEBENCH are registered trademarks 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, 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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