R7732_7733_7735是Richpower公司推出的高效AC TO DC 电源PWM控制芯片,最大功率可以做到75W;如有需求请联系我电话：021-54262182EXT 114 (Eric) QQ ：1187337351
上传时间： 2013-11-20
上传用户：xz85592677
长电c2383 TO-92L
上传时间： 2013-11-09
上传用户：wvbxj
高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher effi ciency.
上传时间： 2013-10-24
上传用户：wd450412225
A number of conventional solutions have been available forthe design of a DC/DC converter where the output voltageis within the input voltage range—a common scenarioin Li-Ion battery-powered applications—but none werevery attractive until now. Conventional topologies, suchas SEPIC or boost followed by buck, have numerousdisadvantages, including low effi ciency, complex magnetics,polarity inversion and/or circuit complexity/cost. TheLTC®3785 buck-boost controller yields a simple, effi cient,low parts-count, single-converter solution that is easyto implement, thus avoiding the drawbacks associatedwith traditional solutions.
上传时间： 2013-10-21
上传用户：ljt101007
毕业设计 USB TO Gigabit LAN 网卡 随着网络技术飞速发展，多媒体的应用越来越多，人们对网络的要求也越来越高，为了适应市场的需求，网卡出现了。它以其结构简单、成本低廉、兼容性强等诸多的优越性得到了广泛的应用。由于网络的应用越来越广泛，网卡的应用也越来越多、功能越来越强大。开始时由于技术方面的限制，网卡只有10Mbps的吞吐量，由于网络技术的发展，100Mbps吞吐量的网卡开始在市场上得到广泛的应用。而现在1000Mbps吞吐量的网卡的出现又给网络的传输带来了新的活力。 论文中主要阐述了基于以太网的USB TO Gigabit LAN网卡的设计与制作。论文首先对以太网进行了介绍，紧接着讲了网卡的基本知识。随后又对USB TO Gigabit LAN网卡的电路设计和制作进行了详细的描述。论文还包括了USB TO Gigabit LAN网卡的调试等内容。
上传时间： 2014-12-02
上传用户：wab1981
AVR32801: UC3A3 Schematic Checklist Features • Power circuit • Reset circuit • USB connection • External bus interface • ABDAC sound DAC interface • JTAG and Nexus debug ports • Clocks and crystal oscillators • MMC, SD-card, SDHC, SDIO and CE-ATA interface 1 Introduction A good hardware design comes from a proper schematic. Since UC3A3 devices have a fair number of pins and functions, the schematic for these devices can be large and quite complex. This application note describes a common checklist which should be used when starting and reviewing the schematics for a UC3A3 design.
标签： Schematic 32801 UC3A3 Chec
上传时间： 2014-12-26
上传用户：DXM35
PICKIT™ 2 PROGRAMMER-TO-GO USER GUIDE The PICkit 2 Programmer-To-Go functionality allows a PIC MCU memory image to be downloaded into the PICkit 2 unit for later programming into a specific PIC MCU. No software or PC is required to program devices once the PICkit 2 unit is set up for Programming-To-Go. A USB power source for the PICkit 2 is all that is needed.
标签： PROGRAMMER-TO PICKIT 8482
上传时间： 2013-10-29
上传用户：ca05991270
虽然PIC都是8位的单片机，但都采用RISC（Reduced Instruction Set Computing）核心结构，这有别于过去一般的CISC(Complex Instruction Set Computing)结构。所谓RISC结构就是采用哈佛双总线结构，将地址总线与数据总线分开，因此在同一个指令执行过程中，数据与地址可以同时传送，避免了总线处理上的瓶颈。
上传时间： 2013-11-21
上传用户：tianyi223
The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applications where system operation is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are located on separate I2C-buses that connect to the same downstreamI2C-bus slave devices. I2C-bus commands are sent by either I2C-bus master and are usedto select one master at a time. Either master at any time can gain control of the slavedevices if the other master is disabled or removed from the system. The failed master isisolated from the system and will not affect communication between the on-line masterand the slave devices on the downstream I2C-bus.
上传时间： 2013-10-09
上传用户：3294322651
The MAX3243E device consists of three line drivers, five line receivers, and a dual charge-pump circuit with±15-kV ESD (HBM and IEC61000-4-2, Air-Gap Discharge) and ±8-kV ESD (IEC61000-4-2, Contact Discharge)protection on serial-port connection pins. The device meets the requirements of TIA/EIA-232-F and provides theelectrical interface between an asynchronous communication controller and the serial-port connector. Thiscombination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, orcompatible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-Vsupply. In addition, the device includes an always-active noninverting output (ROUT2B), which allowsapplications using the ring indicator to transmit data while the device is powered down. The device operates atdata signaling rates up to 250 kbit/s and a maximum of 30-V/ms driver output slew rate.
标签： MULTICHANNEL 5.5 TO RS
上传时间： 2013-10-19
上传用户：ddddddd
