FFeeaattuurreess Input voltage range: 2.2 to 6V Programmable LED Current Drives LEDs Up to 27V Switching Frequency：up to 800KHz Wide dimming frequency range: 20KHz~ 360 KHz Programmable Overvoltage Protection Tiny SOP8/PP Package
标签： HX3248C
上传时间： 2021-11-05
上传用户：aben
Wide 2.2V to 6V Input Voltage Range 0.20V FB adjustable LED drive current Directly drive 9 Series 1W LED at VIN>=6V Fixed 800KHz Switching Frequency Max. 3A Switching Current Capability Up to 92% efficiency Excellent line and load regulation EN PIN TTL shutdown capability Internal Optimize Power MOSFET
标签： sc3633
上传时间： 2021-11-05
上传用户：d1997wayne
2.7V to 5.5V input voltage Range Efficiency up to 96% 24V Boost converter with 12A switch current Limit 600KHz fixed Switching Frequency Integrated soft-start Thermal Shutdown Under voltage Lockout Support external LDO auxiliary power supply 8-Pin SOP-PP PackageAPPLICATIONSPortable Audio Amplifier Power SupplyPower BankQC 2.0/Type CWireless ChargerPOS Printer Power SupplySmall Motor Power Supply
标签： XR2981
上传时间： 2021-11-05
上传用户：
This book addresses programmer attitudes, but it’s not some kind of psychology textbook. We’ll investigate many topics, including: Source code presentation Defensive coding techniques How to debug programs effectively Good teamworking skills Managing your source code Take a quick glance through the table of contents to see exactly what’s covered. What is the rationale behind my selection of topics? I’ve been mentor- ing trainee programmers for many years, and these are the topics that have come up time and time again. I’ve also worked in the software factory for long enough to have seen the recurring problems—I address these too. If you can conquer all of these programming demons, you’ll progress from an apprentice coder to a real code craftsman.
标签： excellent practice writing Craft Code code the of
上传时间： 2021-11-09
上传用户：danix800
FC162是一款低功耗，高速，高噪声容限，EPROM/ROM基于8位CMOS工艺制造的单片机，采用RISC指令集，共有42条指令， 除分支指令为两个周期指令以外其余为单周期指令。这种易用、易记的指令集大大缩短了开发时间。 FC162包含了上电复位(Power-on Reset POR)，掉电复位(Brown-out Reset BOR)， 上电复位计数器（Power-up Reset Timer PWRT），振荡启动计数器 (Oscillator Start-up Timer OST)， 看门狗定时器(Watchdog Timer)， EPROM/ROM， SRAM，双向三 态I/O口，（可以设置为上拉/下拉）， 省电睡眠模式， 一个带8位预置器的8位定时/计数器，独立中断，睡眠唤醒模式和可靠的代码保 护，有两个振荡源可供用户配置选择，包含省电振荡源和低功耗振荡器。 FC162可访问256×13的程序存储空间。 FC162能直接或间接访问寄存器以及数据存储区，所有的特殊功能寄存器分布在数据存储区同时包含特定的程序指针。
标签： fc162
上传时间： 2021-11-13
上传用户：qingfengchizhu
AT89S52单片机主8入8出继电器工控主板ALTIUM设计硬件原理图+PCB文件,2层板设计，大小为121x149mm，Altium Designer 设计的工程文件，包括完整的原理图及PCB文件，可以用Altium(AD)软件打开或修改，可作为你的产品设计的参考。主要器件型号列表如下：Library Component Count : 25Name Description----------------------------------------------------------------------------------------------------24LC02AJKG 按键开关AT89S52-P 8 位微处理器/40引脚CAP CapacitorCAPACITOR POL CapacitorCPDR 瓷片电容CRYSTAL CrystalD Connector 9 Receptacle Assembly, 9 Position, Right AngleDG 电感DJDR 电解电容GO 光耦Header 5X2 Header, 5-Pin, Dual rowJDQYCK 继电器——1常开1常闭LED 发光二极管LM2576HVT-3.3 Simple Switcher 3A Step Down Voltage RegulatorMAX232 NPN NPN Bipolar TransistorPZ_2 排针——2PZ_3 排针——3RES2Res 电阻Res PZ_8 8位排阻SW-DPST Double-Pole, Single-Throw SwitchWY2JG 稳压二级管ZL2JG 整流二极管
上传时间： 2021-11-17
上传用户：kingwide
BTS7960大功率直流电机驱动板ALTIUM设计硬件原理图+PCB文件,2层板设计，大小为66*76mm, 包括完整的原理图和PCB工程文件，可以做为你的设计参考。主要器件如下：Library Component Count : 13Name Description----------------------------------------------------------------------------------------------------CPDR 瓷片电容Component_1_1 DG 电感DJDR 电解电容Header 2 Header, 2-PinLED 发光二极管LED3 Typical BLUE SiC LEDLM2576HVT-3.3 Simple Switcher 3A Step Down Voltage RegulatorPZ_2 排针——2RES2 Res 电阻TLP521-1WY2JG 稳压二级管
上传时间： 2021-11-21
上传用户：
General Design Specification:1. AC Input Range 180-264Vac, Isolated ac-dc offline, 12LEDS,Output 700mA2. Intelligent wall dimmer detections(Leading-edge dimmer , Trailing-edgedimmer , No-dimmer)3. Multiple dimming control scheme4. Wide dimming range from 1% up to 100%5. No visible flicker6. Resonant control to achieve high efficiency7. High Power Factor, 0.9 without dimmer8. Temperature degrade control to adjust the LED9. Primary-only Sensing eliminates opto-isolator feedback and simplifies design
标签： iw3617
上传时间： 2021-12-03
上传用户：canderile
那么我们可以进行如下计算：1，输出电流Iout=Pout/Udc=600/400=1.5A2，最大输入功率Pin=Pout/η=600/0.92=652W3，输入电流最大有效值Iinrmsmax=Pin/Umin=652/85=7.67A4，那么输入电流有效值峰值为Iinrmsmax*1.414=10.85A5，高频纹波电流取输入电流峰值的20%，那么Ihf=0.2*Iinrmsmax=0.2*10.85=2.17A6，那么输入电感电流最大峰值为：ILpk=Iinrmsmax+0.5*Ihf=10.85+0.5*2.17=11.94A7，那么升压电感最小值为Lmin=(0.25*Uout)/(Ihf*fs)=(0.25*400)/(2.17*65KHz)=709uH8，输出电容最小值为：Cmin=Iout/(3.14*2*fac*Voutp-p)=1.5/(3.14*2*50*10)=477.7uF，实际电路中还要考虑hold up时间，所以电容容量可能需要重新按照hold up的时间要求来重新计算。实际的电路中，我用了1320uF，4只330uF的并联。
标签： 变压器
上传时间： 2021-12-04
上传用户：
STM32F407单片机开发板PDF原理图+AD集成封装库+主要器件技术手册资料:AD集成封装库列表：Library Component Count : 54Name Description----------------------------------------------------------------------------------------------------24C256 AMS1117ATK-HC05 ATK-HC05BAT BEEP BUTTONC CAPCH340G USB2UARTDDB9 DHT11 数字温湿度传感器HEAD2HEAD2*22 HR911105 HS0038Header 16 Header, 16-PinHeader 2 Header, 2-PinHeader 2X2 Header, 2-Pin, Dual rowHeader 3X2 Header, 3-Pin, Dual rowHeader 4 Header, 4-PinHeader 9X2 Header, 9-Pin, Dual rowIS62WV51216 JTAG KEY_M L LAN8720 ETH PHYLED2 Typical RED, GREEN, YELLOW, AMBER GaAs LEDLSENS LIGHT SENSL_SOP MAX3232 MAX3485 MIC MOS-P IRLML6401/SI2301MP2359 DC DC Step Down ICMPU6050 9轴运动处理传感器NPN 8050/BCW846/BCW847NRF24L01 PHONE_M PNP 8550/BCW68POW R SMBJ TVSSN65HVD230D STM32F407ZET6 STM32F407ZET6TEST-POINT 测试点TFT_LCD TPAD ALIENTEK TPADUSB5USB_A_90 USB-A-90W25X16
上传时间： 2021-12-15
上传用户：ttalli
