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LM3263TMX/NOPB PDF预览

LM3263TMX/NOPB

更新时间： 2024-11-12 12:02:39
品牌 Logo 应用领域
德州仪器 - TI 转换器放大器射频功率放大器
页数 文件大小 规格书
39页 2173K
描述
LM3263 High-Current Step-Down DC-DC Converter with MIPI® RF Front-End Control Interface for RF Power Amplifiers

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LM3263TMX/NOPB 数据手册

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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  
•
MIPI® RFFE Digital Control Interface  
23  
powering multi-mode multi-band RF power amplifiers  
(PAs) from a single Lithium-Ion cell. The LM3263  
steps down an input voltage from 2.7V to 5.5V to a  
dynamically adjustable output voltage of 0.4V to 3.6V.  
The output voltage is externally programmed through  
the RFFE Digital Control Interface and is set to  
ensure efficient operation at all power levels of the  
RF PA.  
•
High-Efficiency PFM and PWM Modes with  
Internal Seamless Transition  
•
•
Operates from a Single Li-Ion Cell: 2.7V to 5.5V  
Dynamically Adjustable Output Voltage: 0.4V  
to 3.6V (typ.) in PFM and PWM Modes  
•
•
•
•
•
•
•
2.5A Maximum Load Current in PWM Mode  
2.7 MHz (typ.) Switching Frequency  
ACB (reduces inductor requirements and size)  
Internal Compensation  
The LM3263 operates in modulated frequency PWM  
mode producing a small and predictable amount of  
output voltage ripple. PWM mode enables best  
meeting power requirements and stringent spectral  
compliance, with the minimal amount of filtering and  
excess headroom. When operating in PFM mode, the  
LM3263 enables the lowest current consumption  
across PA output power level settings and therefore  
maximizes system efficiency.  
Current and Thermal Overload Protection  
16-bump DSBGA Package  
Very small Solution Size: approx. 9.8 mm2  
APPLICATIONS  
The LM3263 has a unique Active Current assist and  
analog Bypass (ACB) feature to minimize inductor  
size without any loss of output regulation for the  
entire battery voltage and RF output power range,  
until dropout. ACB provides a parallel current path,  
when needed, to limit the maximum inductor current  
to 1.45A (typ) while still driving a 2.5A load. The  
analog bypass feature also enables operation with  
minimal dropout voltage.  
•
•
•
•
•
Smartphones  
RF PC Cards  
Tablets, eBook Readers  
Handheld Radios  
Battery-Powered RF Devices  
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
3
MIPI is a registered trademark of Mobile Industry Processor Interface Alliance.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2013, Texas Instruments Incorporated  
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LM3263TMX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM3243TME/NOPB TI

类似代替

 适用于 2G/3G/4G 功率放大器、具有模拟旁路模式的 2.7MHz、2.5A 降压直流
LM3243TMX/NOPB TI

类似代替

 适用于 2G/3G/4G 功率放大器、具有模拟旁路模式的 2.7MHz、2.5A 降压直流
LM3263TME/NOPB TI

类似代替

 LM3263 High-Current Step-Down DC-DC Converter

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