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LM26484

更新时间： 2024-11-24 11:10:39
品牌 Logo 应用领域
德州仪器 - TI 集成电源管理电路转换器
页数 文件大小 规格书
26页 2412K
描述
两个直流/直流转换器和一个 LDO 可配置 PMIC

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LM26484 数据手册

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LM26484  
www.ti.com  
SNVS573F –SEPTEMBER 2008–REVISED MARCH 2013  
LM26484 Power Management Unit  
Check for Samples: LM26484  
1
FEATURES  
APPLICATIONS  
2
•
Step-Down DC/DC Converter (Buck)  
•
•
•
•
•
•
Digital Cores and I/Os (FPGAs, ASICs, DSPs)  
Automotive Infotainment  
Set-Top-Box  
–
–
–
–
–
–
–
–
–
3.0–5.5V Input Range  
Externally Adjustable VOUT  
:
Bucks 1 & 2: 0.8V–3.5V @ 2A  
180° Phase Shift Between Bucks Clocks  
2 MHz PWM Switching Frequency  
±1% feedback Voltage Accuracy  
Automatic Soft Start  
Cordless Phone Base Station  
Networking Router  
Printers  
DESCRIPTION  
The LM26484 is a multi-function, configurable Power  
Management Unit. This device integrates two highly  
efficient 2.0A Step-Down DC/DC converters, one  
LDO Controller, a POR (Power On Reset) circuit, and  
thermal overload protection circuitry. All regulator  
output voltages are externally adjustable. The LDO  
controller is a low-voltage NMOS voltage regulator.  
The LM26484 is offered in a 5 x 4 x 0.8 mm WQFN-  
24 pin package.  
Current Overload Protection  
PWM/PFM efficiency Modes Available  
•
Linear Regulator (LDO) Controller  
–
–
–
–
3.0V–5.5V Input Range  
Externally Adjustable VOUT  
±1.5% Feedback Voltage Accuracy  
Regulated to Low VIN - Low VOUT LI-LO (Low  
Input Low Output) NFET Operation  
–
–
Input to the LI-LO Configuration, Can Be  
Post Regulated When Supply is Regulated  
by Buck2  
Up to 1000 mA Output Current by Selection  
of External FET  
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
All 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 © 2008–2013, Texas Instruments Incorporated  
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