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LM3290 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3290 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 3 page 2.5V - 5V L C MIPI eTrak LM3290 RFIC or BBIC BATTERY LM3291 LM3290 www.ti.com SNVSA11 – AUGUST 2013 LM3290 Product Brief 1 FEATURES DESCRIPTION The LM3290, with its companion IC LM3291, is an 2 • VOUT_RANGE RF envelope supply modulator (EM) with integrated – VOUT_ET = 0.6 V to 4.5 V DC-DC boost converter optimized for Envelope – VOUT_APT = 0.4 V to 3.81 V (or VIN – 200 mV) Tracking (ET) RF power amplifiers (PAs). The device enables maximum transmit output power independent • DC BOOST FOR ET OPERATION: of the input battery voltage (battery as low as 2.5 V) – Boost Input Voltage Range: 2.5 V to 5 V and is controlled by the system by MIPI® RFFE 1.1. – High-Efficiency (90% typical) with Internal The LM3290 operates in two active modes: Synchronous Rectification 1. For low TX output power, LM3290 may operate in – Boost Bypass Function with Low Average Power Tracking (APT) mode, providing a Resistance (150 m Ω typ.) static, but programmable, output voltage to – 2.7 MHz PWM Switching Frequencies supply the PA. At light load and in APT mode, the LM3290 enters into Pulse Frequency Mode • BUCK DC-DC FOR APT AND ET OPERATION: (PFM) operation automatically and operates with – High Operating Frequency for Small reduced switching frequency. In PFM mode, the External Inductors and Capacitors quiescent current is reduced, which extends the – VOUT_RANGE = 0.6 V to min of 3.81 V and battery life. VIN – 200 mV 2. In ET mode, the LM3290 with LM3291 efficiently – High-Efficiency (95% typical) with Internal provides a dynamic, high-bandwidth supply voltage for the PA to maximize total EM + PA Synchronous Rectification efficiency. The envelope modulator follows the – Low-Power PFM Mode envelope reference input signal delivered by the • LM3291 CONTROL: RFIC to the LM3291 via a differential analog – Automatic Control of LM3291 in ET Mode input. The output is a single-ended power supply signal to the PA. • RFFE CONTROL INTERFACE: The LM3290 and LM3291 support 3G, as well as LTE – 1.8 V MIPI® RFFE 1.1-Compatible Digital operation up to 20-MHz signal bandwidth. Control Interface – 26 MHz Write Capability The LM3290 controls the LM3291 companion-IC through direct control signals, and no additional – 13 MHz Read Capability controls are needed from the system. Shutdown, standby, and idle modes turn the EM off and reduce battery current consumption. For the full datasheet, samples, or the EVM hardware and software please contact a TI representative at ET@list.ti.com. 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. 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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