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LM3263 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3263 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page LM3263 www.ti.com SNVS837 – JUNE 2013 LM3263 High-Current Step-Down DC-DC Converter with MIPI® RF Front-End Control Interface for RF Power Amplifiers Check for Samples: LM3263 1 FEATURES DESCRIPTION The LM3263 is a DC-DC converter optimized for 23 • MIPI® RFFE Digital Control Interface powering multi-mode multi-band RF power amplifiers • High-Efficiency PFM and PWM Modes with (PAs) from a single Lithium-Ion cell. The LM3263 Internal Seamless Transition steps down an input voltage from 2.7V to 5.5V to a • Operates from a Single Li-Ion Cell: 2.7V to 5.5V dynamically adjustable output voltage of 0.4V to 3.6V. The output voltage is externally programmed through • Dynamically Adjustable Output Voltage: 0.4V the RFFE Digital Control Interface and is set to to 3.6V (typ.) in PFM and PWM Modes ensure efficient operation at all power levels of the • 2.5A Maximum Load Current in PWM Mode RF PA. • 2.7 MHz (typ.) Switching Frequency The LM3263 operates in modulated frequency PWM • ACB (reduces inductor requirements and size) mode producing a small and predictable amount of output voltage ripple. PWM mode enables best • Internal Compensation meeting power requirements and stringent spectral • Current and Thermal Overload Protection compliance, with the minimal amount of filtering and • 16-bump DSBGA Package excess headroom. When operating in PFM mode, the • Very small Solution Size: approx. 9.8 mm2 LM3263 enables the lowest current consumption across PA output power level settings and therefore maximizes system efficiency. APPLICATIONS The LM3263 has a unique Active Current assist and • Smartphones analog Bypass (ACB) feature to minimize inductor • RF PC Cards size without any loss of output regulation for the • Tablets, eBook Readers entire battery voltage and RF output power range, until dropout. ACB provides a parallel current path, • Handheld Radios when needed, to limit the maximum inductor current • Battery-Powered RF Devices to 1.45A (typ) while still driving a 2.5A load. The analog bypass feature also enables operation with minimal dropout voltage. The LM3263 is available in a small 2 mm x 2 mm chip-scale 16-bump DSBGA package. 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 MIPI is a registered trademark of Mobile Industry Processor Interface Alliance. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 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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