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LM3485Q1MMX PDF预览

LM3485Q1MMX

更新时间： 2024-11-09 12:48:31
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
23页 996K
描述
Hysteretic PFET Buck Controller

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LM3485Q1MMX 技术参数

生命周期：Obsolete零件包装代码：MSOP
包装说明：TSSOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.2
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 1.239 V TO 35 V; ALSO OPERATES IN PWM CONTROL TECHNIQUE模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：HYSTERETIC CURRENT MODE
最大输入电压：35 V最小输入电压：4.5 V
标称输入电压：12 VJESD-30 代码：S-PDSO-G8
长度：3 mm功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH认证状态：Not Qualified
座面最大高度：1.09 mm表面贴装：YES
切换器配置：SINGLE最大切换频率：1000 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：3 mmBase Number Matches：1

LM3485Q1MMX 数据手册

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LM3485  
www.ti.com  
SNVS178G –JANUARY 2002–REVISED FEBRUARY 2013  
Hysteretic PFET Buck Controller  
Check for Samples: LM3485  
1
FEATURES  
DESCRIPTION  
The LM3485 is a high efficiency PFET switching  
regulator controller that can be used to quickly and  
easily develop a small, low cost, switching buck  
regulator for a wide range of applications. The  
hysteretic control architecture provides for simple  
design without any control loop stability concerns  
using a wide variety of external components. The  
PFET architecture also allows for low component  
count as well as ultra-low dropout, 100% duty cycle  
operation. Another benefit is high efficiency operation  
at light loads without an increase in output ripple.  
2
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Easy to Use Control Methodology  
No Control Loop Compensation Required  
4.5V to 35V Wide Input Range  
1.242V to VIN Adjustable Output Range  
High Efficiency 93%  
±1.3% (±2% Over Temp) Internal Reference  
100% Duty Cycle  
Maximum Operating Frequency > 1MHz  
Current Limit Protection  
Current limit protection is provided by measuring the  
voltage across the PFET’s RDS(ON), thus eliminating  
the need for a sense resistor. The cycle-by-cycle  
current limit can be adjusted with a single resistor,  
ensuring safe operation over a range of output  
currents.  
VSSOP-8  
APPLICATIONS  
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Set-Top Box  
DSL or Cable Modem  
PC/IA  
Auto PC  
TFT Monitor  
Battery Powered Portable Applications  
Distributed Power Systems  
Always On Power  
Typical Application Circuit  
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.  
All trademarks are the property of their respective owners.  
2
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 © 2002–2013, Texas Instruments Incorporated  
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LM3485Q1MMX 替代型号

型号 品牌 替代类型 描述 数据表
LM3485Q1MMX NSC

功能相似

 IC SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8, PLASTIC, MSOP-8, Switching Re
LM3485Q1MM NSC

功能相似

 IC SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8, PLASTIC, MSOP-8, Switching Re

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