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LM25011AQ1MY PDF预览

LM25011AQ1MY

更新时间： 2024-11-14 12:09:43
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
27页 1082K
描述
42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit

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LM25011AQ1MY 技术参数

生命周期：Obsolete零件包装代码：MSOP
包装说明：MSOP-10针数：10
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.69
Is Samacsys：N其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 2.51V
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
最大输入电压：42 V最小输入电压：6 V
标称输入电压：12 VJESD-30 代码：S-PDSO-G10
长度：3 mm功能数量：1
端子数量：10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：HTSSOP封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, 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：BUCK最大切换频率：2000 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
宽度：3 mmBase Number Matches：1

LM25011AQ1MY 数据手册

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LM25011, LM25011-Q1  
www.ti.com  
SNVS617G –APRIL 2009–REVISED FEBRUARY 2013  
LM25011, LM25011Q, LM25011A, LM25011AQ  
42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit  
Check for Samples: LM25011, LM25011-Q1  
1
FEATURES  
•
•
•
Thermal Shutdown  
Precision 2% Feedback Reference  
Package: 10-Pin, VSSOP  
2
•
LM25011Q is an Automotive Grade Product  
that is AEC-Q100 Grade 1 Qualified (-40°C to  
+125°C Operating Junction Temperature)  
DESCRIPTION  
•
LM25011A Allows Low Dropout Operation at  
High Switching Frequency  
The LM25011 Constant On-time Step-Down  
Switching Regulator features all the functions needed  
to implement a low cost, efficient, buck bias regulator  
capable of supplying up to 2A of load current. This  
high voltage regulator contains an N-Channel Buck  
switch, a startup regulator, current limit detection, and  
internal ripple control. The constant on-time  
regulation principle requires no loop compensation,  
results in fast load transient response, and simplifies  
circuit implementation. The operating frequency  
remains constant with line and load. The adjustable  
valley current limit detection results in a smooth  
transition from constant voltage to constant current  
mode when current limit is reached, without the use  
of current limit foldback. The PGD output indicates  
the output voltage has increased to within 5% of the  
expected regulation value. Additional features  
include: Low output ripple, VIN under-voltage lock-  
out, adjustable soft-start timing, thermal shutdown,  
gate drive pre-charge, gate drive under-voltage lock-  
out, and maximum duty cycle limit.  
•
•
•
•
Input Operating Voltage Range: 6V to 42V  
Absolute Maximum Input Rating: 45V  
Integrated 2A N-Channel Buck Switch  
Adjustable Current Limit Allows for Smaller  
Inductor  
•
•
•
•
•
Adjustable Output Voltage from 2.51V  
Minimum Ripple Voltage at VOUT  
Power Good Output  
Switching Frequency Adjustable to 2 MHz  
COT Topology Features:  
–
Switching Frequency Remains Nearly  
Constant with Load Current and Input  
Voltage Variations  
–
–
–
Ultra-Fast Transient Response  
No Loop Compensation Required  
Stable Operation with Ceramic Output  
Capacitors  
The LM25011A has a shorter minimum off-time than  
the LM25011, which allows for higher frequency  
operation at low input voltages.  
–
Allows for Smaller Output Capacitor and  
Current Sense Resistor  
•
Adjustable Soft-Start Timing  
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 © 2009–2013, Texas Instruments Incorporated  
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