FP7209 LED升压驱动IC技术规格及特点

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The FP7209 is a non-synchronous boost LED driver IC that offers a range of features and benefits for LED lighting applications. With a low startup voltage of 2.8V and operating voltage range of 5V to 24V, this IC is versatile and efficient. The VFB feedback voltage of 0.25V ensures accurate and stable regulation, while also reducing power losses in the sampling resistor. The overall conversion efficiency is improved with this feedback voltage. The IC includes various protection features, such as LED open-circuit protection through external resistor adjustment, LED short-circuit protection through SC-controlled NMOS, overcurrent protection to prevent damage from excessive NMOS current, and built-in overheat protection. These features ensure the safety and reliability of the LED driver in various operating conditions. The FP7209 also offers dimming control capabilities through the DIM pin, which includes an internal filter for linear and digital dimming. The shutdown current is minimal at a maximum of 6μA, ensuring efficient power consumption during standby mode. The IC operates at a fixed frequency of 150kHz in the SOP-8L (EP) package, with adjustable frequency options ranging from 100kHz to 1000kHz in the TSSOP-14L (EP) package. The soft-start time, input undervoltage protection (UVP), and other parameters can also be adjusted in the TSSOP-14L (EP) package. In summary, the FP7209 is a reliable and efficient LED driver IC that offers a range of features to optimize performance and protect against various operating conditions. Its versatility, protection features, and dimming control capabilities make it a suitable choice for LED lighting applications.

FP6296V064-G1.pdf

2021-05-19 上传
基于所提供的文件信息，以下是对FP6296V064-G1.pdf文件中关于升压芯片FP6296的详细知识点整理： 1. FP6296芯片简介： FP6296是一款电流模式的升压DC-DC转换器，它包含内置的PWM电路和15毫欧姆的功率MOSFET，能够...

FP7208V064-G1.pdf

2022-08-18 上传
FP7208V064-G1.pdf是一款由Feeling Technology公司推出的非同步PWM升压控制器，专门设计用于LED驱动应用。该芯片的核心功能是作为升压型开关稳压器，驱动外部N沟道MOSFET，以提供恒定电流给LED负载。 关键特性包括...

FP8207V060-G1.pdf

2021-08-11 上传
标题《FP8207V060-G1.pdf》以及描述《FP8207V060-G1.pdf datasheet》表明我们正在讨论的是一个型号为FP8207的电子元件的技术数据手册，这是一个芯片或集成电路的数据表。标签"fp8207"进一步确认了这一点。从给出的...

FP6291LR-G1

2023-08-29 上传
FP6291LR-G1是一种内置0.2Ω，2.5A,16V的P-MOS的DC-DC异步升压恒压IC，其工作频率为1MHz。 这个IC的品牌有西安航天民芯，型号为MT36291。 它可以用MT36291 SOT23-6芯片进行替换，因此可以由西安航天民芯的原厂原装MT...

fp-ruoyi-admin-3.8.6-SNAPSHOT.jar中没有主清单属性

2023-09-29 上传
fp-ruoyi-admin-3.8.6-SNAPSHOT.jar中没有主清单属性。要解决这个问题，你可以按照以下步骤操作： 1. 确保你的项目中存在一个主类（Main Class），它是程序的入口点。 2. 检查你的项目的构建配置，确保正确指定了主...

from pdfminer.pdfparser import PDFParser from pdfminer.pdfdocument import PDFDocument from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter from pdfminer.converter import PDFPageAggregator, TextConverter from pdfminer.layout import LAParams, LTTextBoxHorizontal from pdfminer.pdfpage import PDFPage # 打开 PDF 文件 fp = open('x1/2023凯程333教育综合应试解析-外国教育史(OCR).pdf', 'rb') # 创建 PDF 解析器 parser = PDFParser(fp) # 创建 PDF 文档对象 document = PDFDocument(parser) # 获取页面布局参数 laparams = LAParams() # 创建 PDF 资源管理器 rsrcmgr = PDFResourceManager() # 创建聚合器对象 device = PDFPageAggregator(rsrcmgr, laparams=laparams) # 创建 PDF 解释器 interpreter = PDFPageInterpreter(rsrcmgr, device) # 创建一个TXT文件来保存提取的文本内容 output_file = open('教材1.txt', 'w', encoding='utf-8') # 处理每一页 PDF 页面 for page in PDFPage.create_pages(document): interpreter.process_page(page) # 获取页面布局 layout = device.get_result() # 提取每一页的文本内容 for x in layout: if isinstance(x, LTTextBoxHorizontal): text = x.get_text().strip() print(text) output_file.write(text + '\n') # 关闭TXT文件和 PDF 文件 output_file.close() fp.close()上述代码改写成用窗口来显示

2023-05-27 上传
你可以尝试使用Python的GUI库，如Tkinter或PyQt来创建一个窗口，然后将PDF文本内容显示在窗口中。以下是一个使用Tkinter的示例代码： ```python from tkinter import * from pdfminer.pdfparser import PDFParser ...

void format()//格式化函数 { int i; FILE* fp; fat = (struct fatitem*)(f + SIZE); //初始化FAT表 fat[0].item = -1; fat[0].em = '1'; for (i = 1; i < ROOT_NO - 1; i++) { fat[i].item = i + 1; fat[i].em = '1'; } fat[ROOT_NO].item = -1; fat[ROOT_NO].em = '1'; for (i = ROOT_NO + 1; i < NUM; i++) { fat[i].item = -1; fat[i].em = '0'; } root = (struct direct*)(f + SIZE + FATSIZE); //初始化目录 root->directitem[0].sign = 1; root->directitem[0].first= ROOT_NO; strcpy(root->directitem[0].name, "."); root->directitem[0].next = root->directitem[0].first; root->directitem[0].property = '1'; root->directitem[0].size = ROOT_SIZE; //指向上一级目录的目录项 root->directitem[1].sign = 1; root->directitem[1].first = ROOT_NO; strcpy(root->directitem[1].name, ".."); root->directitem[1].next = root->directitem[0].first; root->directitem[1].property = '1'; root->directitem[1].size = ROOT_SIZE; if ((fp = fopen("test.txt", "wb")) == NULL) { printf("无法打开文件\n"); return; } for (i = 2; i < MSD + 2; i++) { root->directitem[i].sign = 0; root->directitem[i].first = -1; strcpy(root->directitem[i].name, ""); root->directitem[i].next = -1; root->directitem[i].property = '0'; root->directitem[i].size = 0; } if ((fp = fopen("test.txt", "wb")) == NULL) { printf("无法打开文件\n"); return; } if (fwrite(f, MEM_D_SIZE, 1, fp) != 1) { printf("无法打开文件\n"); } fclose(fp); }请逐句解释这段代码的意思

2023-06-08 上传
这段代码是一个格式化函数，用于初始化文件系统的FAT表和根目录。 1. `fat = (struct fatitem*)(f + SIZE);` 将一个指向FAT表的指针fat指向内存中FAT表的地址。 2. `fat[0].item = -1; fat[0].em = '1';` 将FAT表...

将下面C语言风格的句子转变成C++风格的句子 fprintf(fp,"%s ", in[i].F_Name); fprintf(fp," %-8d ", in[i].F_num); fprintf(fp," %-8f ", in[i].price); fprintf(fp," %-8s ", in[i].description); fprintf(fp," %-8s ", in[i].F_Spec); fprintf(fp," \n\n ");

2023-06-12 上传
fp [i].F_Name (8) [i].F_num (8) [i].price (8) [i].description (8) [i].F_Spec ;

void basicSettings(struct Student* student, struct Course courses[], int* numCourses) { int choose; printf("\n--------基本设置--------\n"); printf("\n--------1.添加学生信息--------\n"); printf("\n--------2.添加老师信息--------\n"); printf("\n--------3.修改密码--------\n"); printf("\n--------4.返回--------\n"); printf("请输入您的选择：\n"); scanf("%d", &choose); if(choose==1){ printf("\n"); printf("请输入班级："); scanf("%s", student->className); printf("请输入学号："); scanf("%s", student->id); printf("请输入姓名："); scanf("%s", student->name); } if(choose==2) { printf("\n"); printf("请输入课程数："); scanf("%d", numCourses); printf("请输入每门课程的名称和教师名字：\n"); for (int i = 0; i < *numCourses; i++) { printf("第%d门课程：", i + 1); scanf("%s %s", courses[i].name, courses[i].teacher); } } if(choose==3) { void changePassword(struct User* user) { printf("\n--------修改密码--------\n"); printf("请输入旧密码："); char oldpassword[MAX_NAME_LEN]; scanf("%s", oldpassword); if (strcmp(oldpassword, user->password) != 0) { printf("密码错误，修改失败！\n"); return; } printf("请输入新密码："); scanf("%s", user->password); printf("密码已修改！\n"); } changePassword(user_p); } FILE* fp = fopen("student.dat", "wb"); if (fp == NULL) { printf("无法打开文件！\n"); return; } fwrite(student, sizeof(struct Student), 1, fp); fclose(fp); fp = fopen("courses.dat", "wb"); if (fp == NULL) { printf("无法打开文件！\n"); return; } fwrite(courses, sizeof(struct Course), *numCourses, fp); fclose(fp); printf("设置已保存！\n"); } 修改代码

2023-05-31 上传
printf("请输入每门课程的名称和教师名字：\n"); for (int i = 0; i *numCourses; i++) { printf("第%d门课程：", i + 1); scanf("%s %s", courses[i].name, courses[i].teacher); } } if (choose == 3) { ...

from tkinter import * from pdfminer.pdfparser import PDFParser from pdfminer.pdfdocument import PDFDocument from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter from pdfminer.converter import PDFPageAggregator, TextConverter from pdfminer.layout import LAParams, LTTextBoxHorizontal from pdfminer.pdfpage import PDFPage class PDFViewer: def init(self, master): self.master = master master.title("PDF Viewer") # 创建文本框和滚动条 self.text = Text(master) self.scrollbar = Scrollbar(master, command=self.text.yview) self.text.configure(yscrollcommand=self.scrollbar.set) self.text.pack(side=LEFT, fill=BOTH, expand=True) self.scrollbar.pack(side=RIGHT, fill=Y) # 打开 PDF 文件 fp = open('x1/2023凯程333教育综合应试解析-外国教育史(OCR).pdf', 'rb') # 创建 PDF 解析器 parser = PDFParser(fp) # 创建 PDF 文档对象 document = PDFDocument(parser) # 获取页面布局参数 laparams = LAParams() # 创建 PDF 资源管理器 rsrcmgr = PDFResourceManager() # 创建聚合器对象 device = PDFPageAggregator(rsrcmgr, laparams=laparams) # 创建 PDF 解释器 interpreter = PDFPageInterpreter(rsrcmgr, device) # 处理每一页 PDF 页面 for page in PDFPage.create_pages(document): interpreter.process_page(page) # 获取页面布局 layout = device.get_result() # 提取每一页的文本内容 for x in layout: if isinstance(x, LTTextBoxHorizontal): text = x.get_text().strip() self.text.insert(END, text + '\n') # 关闭 PDF 文件 fp.close() root = Tk() pdf_viewer = PDFViewer(root) root.mainloop()上述文本框添加保存到本地功能的完整代码

2023-05-27 上传
fp = open('x1/2023凯程333教育综合应试解析-外国教育史(OCR).pdf', 'rb') # 创建 PDF 解析器 parser = PDFParser(fp) # 创建 PDF 文档对象 document = PDFDocument(parser) # 获取页面布局参数 laparams ...
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