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降压稳压器

  • 阻容降压原理

    阻容降压原理

    标签: 阻容降压

    上传时间: 2013-11-13

    上传用户:吾学吾舞

  • 电容降压式电源

    电容降压式电源

    标签: 电容 降压式电源

    上传时间: 2013-11-04

    上传用户:xjz632

  • 阻容降压式电源

    阻容降压式电源:将交流市电转换为低压直流的常规方法是采用变压器降压后再整流滤波,当受体积和成本等因素的限制时,最简单实用的方法就是采用电容降压式电源。与变压器降压相比,电容降压(也可理解成电容限流)的电源体积小、经济、可靠、效率高,缺点是不如变压器降压的电源安全。通过电容器把交流电引入负载中,对地有220V电压,人易触电,但若用在不需人体接触的电路内部电路电源中,本缺点也可克服。如冰箱电子温控器或遥控电源的开/关等电源都是用电容器降压而制成的。  

    标签: 阻容 降压式电源

    上传时间: 2013-11-23

    上传用户:wxqman

  • DN378 低静态电流单片式降压型稳压器

      Automobile electronic systems place high demands ontoday’s DC/DC converters. They must be able to preciselyregulate an output voltage in the face of wide temperatureand input voltage ranges—including load dump transientsin excess of 60V and cold crank voltage drops to 4V. Theconverter must also be able to minimize battery drain inalways-on systems by maintaining high effi ciency over abroad load current range. Similar demands are made bymany 48V nonisolated telecom applications, 40V FireWireperipherals and battery-powered applications with autoplug adaptors. The LT3437’s best in classperformancemeets all of these requirements in a small thermallyenhanced 3mm × 3mm DFN package.

    标签: 378 DN 低静态电流 单片式

    上传时间: 2013-10-15

    上传用户:stampede

  • 具有宽输入范围的微型单片降压型稳压器

      Automotive batteries, industrial power supplies, distributedsupplies and wall transformers are all sources ofwide-ranging high voltage inputs. The easiest way to stepdown these sources is with a high voltage monolithicstep-down regulator that can directly accept a wide inputrange and produce a well-regulated output. The LT®3493accepts inputs from 3.6V to 36V and LT3481 acceptsinputs from 3.6V to 34V. Both provide excellent lineand load regulation and dynamic response. The LT3481offers a high effi ciency solution over a wide load range andkeeps the output ripple low during Burst Mode® operationwhile the LT3493 provides a tiny solution with minimalexternal components. The LT3493 operates at 750kHzand the LT3481 has adjustable frequency from 300kHzto 2.8MHz. High frequency operation enables the use ofsmall, low cost inductors and ceramic capacitors.

    标签: 输入 降压型稳压器

    上传时间: 2014-12-24

    上传用户:Pzj

  • DN442 I2C可控降压紧凑型同步DC/DC稳压器

      The LTC®3562 quad output step-down regulator is designedfor multicore handheld microprocessor applications thatoperate from a single Li-Ion battery. Its four monolithic, higheffi ciency buck regulators support Intel’s mobile CPU P-Stateand C-State energy saving operating modes. The outputvoltages are independently controllable via I2C, and eachoutput can be independently started and shut down. Designerscan choose from power saving pulse-skipping mode orBurst Mode® operation, or select low noise LDO mode. Thespace-saving LTC3562 is available in a 3mm × 3mm QFNpackage and requires few external components.

    标签: DC 442 I2C DN

    上传时间: 2013-10-07

    上传用户:1583060504

  • NCV8503 集成复位输出的LDO稳压器产品简介手册及封装

    NCV8503是一款高精度微功耗电源稳压器。输出电流可达400mA。该器件提供多个级别的输出电压供客户选择:2.5V、3.3V、5.0V,及可调输出版本。在负载为400mA时,最大压降仅为0.6V,电压输出精度在±2.0%以内。当ENABLE=0V时,静态电流低于1uA;如果ENABLE=5V,负载为100uA静态电流仅为200uA。非常适合电池供电设备。支持RESET输出(带DELAY功能),可用于微处理器逻辑控制。当输出电压达到1.0V时,RESET电路即可正常工作。当电源上电及电压跌落于门槛电压时,RESET电路输出复位信号。

    标签: 8503 NCV LDO 集成复位

    上传时间: 2013-11-22

    上传用户:xieguodong1234

  • LDO稳压器高精度电压基准源的分析与设计

    超低漏失线性稳压器的技术关键,是基准源模块的设计,在对双极型LDO稳压器进行分析的基础上,提出了对其关键模块基准电压源进行高精度的设计的方案。

    标签: LDO 稳压器 电压基准源

    上传时间: 2013-12-07

    上传用户:guojin_0704

  • LDO稳压器中动态频率补偿和限流保护的研究

    文章针对LDO稳定性的问题,提出了一种内部动态频率补偿电路,使LDO线性稳压器的稳定性不 受负载电容的等效串联电阻的影响,其单位增益带宽也不随负载电流变化而改变,大大提高了瞬态响应特性; 采用Hynix 0.5 1TI CMOS工艺模型对电路进行仿真;此外,该电路在实现动态频率补偿的基础上又加人了 系统的过流保护功能,当负载电流大于限制电流时,LDO不能正常工作;当负载电流小于限制电流时,又自动 恢复到正常工作状态

    标签: LDO 稳压器 动态 频率补偿

    上传时间: 2013-10-27

    上传用户:黑漆漆

  • LDO稳压器等效串联电阻的稳定范围

    本文研究LDO稳压器等效串联电阻(ESR)值的稳定范围。用LDO稳压器ac模式讨论LDO频率响应。检验稳定和非稳定ESR范围。

    标签: LDO 稳压器 串联电阻 等效

    上传时间: 2013-11-18

    上传用户:xwd2010