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LM25085SDX/NOPB

更新时间： 2024-11-15 13:09:19
品牌 Logo 应用领域
德州仪器 - TI 开关控制器
页数 文件大小 规格书
30页 1508K
描述
4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller 8-WSON -40 to 125

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LM25085SDX/NOPB 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Obsolete包装说明：3 X 3 MM, GREEN, WSON-8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.63
Is Samacsys：N其他特性：ADJUSTABLE OUTPUT VOLTAGE FROM 1.25V
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：VOLTAGE-MODE
最大输入电压：42 V最小输入电压：4.5 V
标称输入电压：24 VJESD-30 代码：S-PDSO-N8
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
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC8,.11,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：1000 kHz
温度等级：AUTOMOTIVE端子形式：NO LEAD
端子节距：0.5 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

LM25085SDX/NOPB 数据手册

 浏览型号LM25085SDX/NOPB的Datasheet PDF文件第2页浏览型号LM25085SDX/NOPB的Datasheet PDF文件第3页浏览型号LM25085SDX/NOPB的Datasheet PDF文件第4页浏览型号LM25085SDX/NOPB的Datasheet PDF文件第5页浏览型号LM25085SDX/NOPB的Datasheet PDF文件第6页浏览型号LM25085SDX/NOPB的Datasheet PDF文件第7页 
LM25085, LM25085-Q1  
www.ti.com  
SNVS593H –OCTOBER 2008–REVISED MARCH 2013  
LM25085, LM25085-Q1 42V Constant On-Time PFET Buck Switching Controller  
Check for Samples: LM25085, LM25085-Q1  
1
FEATURES  
PACKAGE  
2
•
LM25085-Q1 is an Automotive Grade product  
that is AEC-Q100 Grade 1 Qualified (-40°C to  
125°C Operating Junction Temperature)  
•
•
•
HVSSOP-8  
VSSOP-8  
WSON-8 (3mm x 3mm)  
•
•
Wide 4.5V to 42V Input Voltage Range  
Adjustable Current Limit Using RDS(ON) or a  
Current Sense Resistor  
DESCRIPTION  
The LM25085 is a high efficiency PFET switching  
regulator controller that can be used to quickly and  
easily develop a small, efficient buck regulator for a  
wide range of applications. This high voltage  
controller contains a PFET gate driver and a high  
voltage bias regulator which operates over a wide  
4.5V to 42V input range. The constant on-time  
regulation principle requires no loop compensation,  
simplifies circuit implementation, and results in ultra-  
fast load transient response. The operating frequency  
remains nearly constant with line and load variations  
due to the inverse relationship between the input  
voltage and the on-time. The PFET architecture  
allows 100% duty cycle operation for a low dropout  
voltage. Either the RDS(ON) of the PFET or an external  
sense resistor can be used to sense current for over-  
current detection.  
•
•
•
•
Programmable Switching Frequency to 1MHz  
No Loop Compensation Required  
Ultra-Fast Transient Response  
Nearly Constant Operating Frequency with  
Line and Load Variations  
•
•
•
•
•
•
Adjustable Output Voltage from 1.25V  
Precision ±2% Feedback Reference  
Capable of 100% Duty Cycle Operation  
Internal Soft-Start Timer  
Integrated High Voltage Bias Regulator  
Thermal Shutdown  
Typical Application, Basic Step Down Controller  
4.5V to 42V  
C
VCC  
LM25085  
Input  
VIN  
V
IN  
VCC  
C
ADJ  
C
IN  
ADJ  
GND  
R
T
R
ADJ  
L1  
PGATE  
Q1  
RT  
SHUTDOWN  
V
OUT  
ISEN  
FB  
C
OUT  
GND  
D1  
Cff  
R
FB2  
GND  
R
FB1  
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 © 2008–2013, Texas Instruments Incorporated  
1234567...30

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