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LM3477MMX

更新时间： 2024-11-11 11:11:55
品牌 Logo 应用领域
德州仪器 - TI 开关控制器光电二极管稳压器
页数 文件大小 规格书
35页 1198K
描述
用于开关稳压器的高效高侧 N 沟道控制器 | DGK | 8 | -40 to 125

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中文翻译

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LM3477MMX 技术参数

生命周期：Not Recommended零件包装代码：MSOP
包装说明：TSSOP,针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.14Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：35 V
最小输入电压：2.97 V标称输入电压：12 V
JESD-30 代码：S-PDSO-G8JESD-609代码：e0
长度：3 mm湿度敏感等级：1
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
最大输出电流：1 A最大输出电压：31 V
最小输出电压：1.265 V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峰值回流温度（摄氏度）：260
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：500 kHz温度等级：AUTOMOTIVE
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

LM3477MMX 数据手册

 浏览型号LM3477MMX的Datasheet PDF文件第2页浏览型号LM3477MMX的Datasheet PDF文件第3页浏览型号LM3477MMX的Datasheet PDF文件第4页浏览型号LM3477MMX的Datasheet PDF文件第5页浏览型号LM3477MMX的Datasheet PDF文件第6页浏览型号LM3477MMX的Datasheet PDF文件第7页 
LM3477  
www.ti.com  
SNVS141K –OCTOBER 2000–REVISED MARCH 2013  
LM3477 High Efficiency High-Side N-Channel Controller for Switching Regulator  
Check for Samples: LM3477  
1
FEATURES  
DESCRIPTION  
The LM3477/A is a high-side N-channel MOSFET  
switching regulator controller. It can be used in  
topologies requiring a high side MOSFET such as  
buck, inverting (buck-boost) and zeta regulators. The  
LM3477/A's internal push pull driver allows  
compatibility with a wide range of MOSFETs. This,  
the wide input voltage range, use of discrete power  
components and adjustable current limit allows the  
LM3477/A to be optimized for a wide variety of  
applications.  
2
•
500kHz Switching Frequency  
Adjustable Current Limit  
1.5% Reference  
•
•
•
•
Thermal Shutdown  
Frequency Compensation Optimized with a  
Single Capacitor and Resistor  
•
•
•
•
Internal Softstart  
Current Mode Operation  
Undervoltage Lockout with Hysteresis  
8-lead (VSSOP-8) Package  
The LM3477/A uses a high switching frequency of  
500kHz to reduce the overall solution size. Current-  
mode control requires only a single resistor and  
capacitor for frequency compensation. The current  
mode architecture also yields superior line and load  
regulation and cycle-by-cycle current limiting. A 5µA  
shutdown state can be used for power savings and  
for power supply sequencing. Other features include  
internal soft-start and output over voltage protection.  
The internal soft-start reduces inrush current. Over  
voltage protection is a safety feature to ensure that  
the output voltage stays within regulation.  
APPLICATIONS  
•
•
•
•
•
•
•
•
Local Voltage Regulation  
Distributed Power  
Notebook and Palmtop Computers  
Internet Appliances  
Printers and Office Automation  
Battery operated Devices  
Cable Modems  
The LM3477A is similar to the LM3477. The primary  
difference between the two is the point at which the  
device transitions into hysteretic mode. The hysteretic  
threshold of the LM3477A is one-third of the LM3477.  
Battery Chargers  
Hysteretic Threshold(1)  
LM3477  
≊ 36% of programmed current limit  
≊ 12% of programmed current limit  
LM3477A  
(1) See Hysteretic Threshold and PROGRAMMING THE  
CURRENT LIMIT/HYSTERETIC THRESHOLD for more  
information.  
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 © 2000–2013, Texas Instruments Incorporated  
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LM3477MMX 替代型号

型号 品牌 替代类型 描述 数据表
LM3477MMX/NOPB TI

功能相似

 用于开关稳压器的高效高侧 N 沟道控制器 | DGK | 8 | -40 to 125
LM3477MM/NOPB TI

功能相似

 用于开关稳压器的高效高侧 N 沟道控制器 | DGK | 8 | -40 to 125

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