5秒后页面跳转
LM25085AMYX/NOPB PDF预览

LM25085AMYX/NOPB

更新时间: 2024-11-16 11:07:11
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
30页 1508K
描述
4.5V 至 42V 宽输入电压、恒定导通时间非同步、0.9V 基准电压 PFET 降压控制器 | DGN | 8 | -40 to 125

LM25085AMYX/NOPB 数据手册

 浏览型号LM25085AMYX/NOPB的Datasheet PDF文件第2页浏览型号LM25085AMYX/NOPB的Datasheet PDF文件第3页浏览型号LM25085AMYX/NOPB的Datasheet PDF文件第4页浏览型号LM25085AMYX/NOPB的Datasheet PDF文件第5页浏览型号LM25085AMYX/NOPB的Datasheet PDF文件第6页浏览型号LM25085AMYX/NOPB的Datasheet PDF文件第7页 
LM25085, LM25085-Q1  
www.ti.com  
SNVS593H OCTOBER 2008REVISED 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  

LM25085AMYX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM25085AMYE/NOPB TI

完全替代

4.5V 至 42V 宽输入电压、恒定导通时间非同步、0.9V 基准电压 PFET 降压控
LM25085AMY/NOPB TI

类似代替

4.5V 至 42V 宽输入电压、恒定导通时间非同步、0.9V 基准电压 PFET 降压控

与LM25085AMYX/NOPB相关器件

型号 品牌 获取价格 描述 数据表
LM25085ASD NSC

获取价格

42V Constant On-Time PFET Buck Switching Controller with 0.9V Reference
LM25085ASD/NOPB TI

获取价格

4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller with 0.9V Referenc
LM25085ASDE NSC

获取价格

42V Constant On-Time PFET Buck Switching Controller with 0.9V Reference
LM25085ASDE/NOPB TI

获取价格

4.5V 至 42V 宽输入电压、恒定导通时间非同步、0.9V 基准电压 PFET 降压控
LM25085ASDX NSC

获取价格

42V Constant On-Time PFET Buck Switching Controller with 0.9V Reference
LM25085ASDX/NOPB TI

获取价格

4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller with 0.9V Referenc
LM25085MM TI

获取价格

LM25085, LM25085-Q1 42V Constant On-Time PFET Buck Switching Controller
LM25085MM NSC

获取价格

42V Constant On-Time PFET Buck Switching Controller
LM25085MM/NOPB TI

获取价格

4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller 8-VSSOP -40 to 125
LM25085MME TI

获取价格

LM25085, LM25085-Q1 42V Constant On-Time PFET Buck Switching Controller