方案描述:
MC13892 is a Power Management and User Interface component for Freescale’s i.MX51, i.MX37, i.MX35 and i.MX27 application processors, targeting personal media players and personal navigation devices. The MC13892 integrates many discrete functions into one IC. It incorporates, a battery charging system including USB charging and wall charging, 10 BitADCplus Coulomb counter for battery chargefuel gauging, 4 adjustable buck converters for powering processor core and memory, and 12 adjustableLDO’s with internal/external pass devices. It also includes 2 boost converters forLCDbacklighting and RGBLEDdriving, serial backlighting drivers for display, and keypad and RGBLEDdrivers. The MC13892 incorporates pohttp://www.dgfpc.com/电感生产wer control logic with processor interfacing and event detection, Real time clock and critical oscillator circuitry with coin cell backup and support, for external secure RTC on a companion processor IC device. It incorporatesSPIand I2C interfacing. Touch Screen interface circuitry – all incorporated into a highly integrated mixed signa功率电感l IC. It is intended for interfacing with Freescale i.MX processors or any other device – system needing a highly integrated, bi-directional power management, I/O, and communications device.
方案文档下载：MC13892JVLR2.pdf
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基于PCI总线的塔康视频信号产生电路设计PCI总线具有支持多种外围设备、独立于处理器、数据传输快等优点，已经应用于PC机，工控机等多种场合，如数据采集卡，IO控制卡、总线卡等都采用了PCI总线结构。在某综合测试系统设计时，为提高系统集成化、
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[稳压电源]请教个线性稳压器输出电容问题 本帖最后由 圣骑士by 于 2019-12-16 15:36 编辑 从网上看到2个观点：1、LM7805 LM7812等线性稳压器，输出电容是用来滤波的，不需要特别大，0.1uF就可以，芯片手册上输入0.33uF，输出0.1uF2、输入和输出尽量放大的电容，用来提高电源质量。 淘宝上卖的很多模块都放了几百微法的电解电容。 这两个观点哪个对？Cin>=Cout才行。 Cout用0.1uF也足夠，但必須两颗或以上，以防止空焊，Cout沒接时极可能振荡，振幅直逼Vin-2V将失去穏压。 規格书㝍Cin用0.3
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