飞外网>电源/新能源>稳压电源>RT8800A的特性及应用
RT8800A的特性及应用 来源：不详•作者：佚名• 2010-03-22 16:52 • 次阅读 • 个评论RT8800A的特性及应用
General Purpose 3-Phase PWM Controller for High-Density Power Supply
The RT8800A is a general-purposed mulTI-phase synchronous buck controller dedicaTIng for high power density applicaTIons. The RT8800A operates with 2 or 3 synchronous buck switching stages in interleaved phase set automaTIcally. The multiphase architecture provides high output current while maintaining low power dissipation on power devices and low stress on input and output capacitors.
The output voltage is precisely regulated to the external reference voltage at PI pin. The RT8800A can provide Intel® VRD10.x or AMD® K8 compliant output voltage when companioned with DAC generator RT9401A/B.
The RT8800A adopts innovative time-sharing DCR current sensing technique for channel current balance, droop tuning, and over current protection. Using one common GM amplifier for current sensing eliminates offset errors and linearity variation between GMs. As sub-milli-ohm-grade inductors are widely used in modern mother boards, slight mismatch of GM amplifiers offset and linearity results in considerable current shift between phases. The time-sharing DCR current sensing technique is extremely important to guarantee phase current balance at mass production.
Other features include overvoltage protection, undervoltage protection and internal softstart. The RT8800A comes to a VQFN-16L 3x3 package.
Ordering Info
Note :
Richtek Pb-free and Green products are :
► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
► Suitable for use in SnPb or Pb-free soldering processes.
► 100% matte tin (Sn) plating.
Features
• 5V Power Supply Voltage
• 2/3-Phase Power Conversion with Automatic Phase Selection
• Output Voltage Controlled by External Reference Voltage
• Precise Core Voltage Regulation
• Power Stage Thermal Balance by DCR Current Sensing
• Extreme Low-Cost, Lossless Time Sharing Current Sensing
• Internal Soft-Start
• Hiccup Mode Over-Current Protection
• Over-Voltage Protection
• Adjustable Operating Frequency and Typical at 300kHz Per Phase
• Power Good Indication
• Small 16-Lead VQFN Package
• RoHS Compliant and 100% Lead (Pb)-Free
Application
• Desktop CPU Core Power
• Low Output Voltage, High Power Density DC-DC Converters
• Voltage Regulator Modules
Pin Configurations
(TOP VIEW)
VQFN-16L 3x3
RT8800A应用电路
RT-AK及Art-Pi简介Github：https://github.com/EdgeAIWithRTT/Project7-Cifar10_Cube_Art-Pi RT-AK 及 Art-Pi 简介 目前该项目为 RT2021-07-26 18:20:301162隔离式栅极驱动器的特性及应用综述隔离式栅极驱动器的特性及应用综述2021-06-25 10:18:342八进制8位DA转换器DAC-8800 TrimDAC®的AN-142电压调整应用八进制8位DA转换器DAC-8800 TrimDAC®的AN-142电压调整应用2021-06-17 16:49:100DAC8800：八进制8位D/A转换器数据表DAC8800：八进制8位D/A转换器数据表2021-05-22 08:00:062树莓派上rt-smart的应用编程入门文章，一些介绍及树莓派上rt-smart的应用编程入门（更多的从应用程序角度入手）。后续还包括在rt-smart上的不同应用程序介绍： wget curl移植 busybox移植 sdl图形类应用2021-05-13 14:15:201114AN-142：八进制8位D/A转换器DAC-8800TrimDAC sup ® /sup 的电压调整应用AN-142：八进制8位D/A转换器DAC-8800TrimDAC®的电压调整应用2021-05-09 10:50:100IT8800系列可编程直流电子负载的功能特点及应用IT8800系列直流电子负载拥有宽广的功率范围150W-10KW，电压电流测量速度均达到50KHz，测试分辨率可达0.1mV/0.01mA，测试电流上升速度0.001A/us~2.5A/us可调，且内置RS232/GBIP/USB通讯接口，参数指标非常优异。2020-12-23 09:55:15399诺基亚8800拆机图解虽然你落在漫漫机海之中，但还是成功勾起了我对你的兴趣，Nokia 8800，没错，就是你，曾经的手机王者，在飞速发展的科技前面你还是被后浪拍死在了沙滩上。今天本站长要拆解的正式这款Nokia 8800手机，不过很遗憾，今天的主角只是Nokia 8800的高仿版。2019-09-18 20:30:4110772DRV8800 2.8A 刷式直流电机驱动器 (PWM 控制)飞外网为你提供TI(ti)DRV8800相关产品参数、数据手册，更有DRV8800的引脚图、接线图、封装手册、中文资料、英文资料，DRV8800真值表，DRV8800管脚等资料，希望可以帮助到广大的电子工程师们。2018-09-04 17:59:10DMOS电机驱动DRV8800/DRV8801DMOS电机驱动DRV8800/DRV8801 DRV8800/DRV8801是TI的一款电机驱动芯片，用于通过脉冲宽度调制（PWM）控制直流电动机，峰值输出电流达正负2.8A,工作电压达362020-09-26 09:31:021158800E原理图8800原理图，有需要的朋友可以下来看看。2016-01-28 13:34:364RT8060A应用电路及封装图本内容为RT8060A降压DCDC转换器的应用电路。2011-04-03 18:31:381510创维21NF8800A(5S30机芯)彩电电路图纸创维21NF8800A(5S30机芯)彩电图纸2010-12-06 16:11:12403RT8453/RT8453B应用电路（40V的高电压降压型LRT8453/RT8453B应用电路（40V的高电压降压型LED驱动器）
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Capable2008-12-12 23:05:4930RT9261/RT9261A pdf datasheet ( and suitable foruse with battery-powered instruments.The RT9261 IC consists of an oscillator, a VFM controlcircuit, a driver transisto2008-12-12 22:54:5411RT9284A/RT9284B pdf datasheetThe RT9284A/B is a compact, high efficient and highintegration LED driver. Internal 22V MOSFET can2008-12-12 20:50:5828RT9173/RT9173A pdf datasheet (The RT9173/A regulator is designed to convert voltagesupplies ranging from 1.6V to 6V into a2008-12-12 20:45:4728RT9184/RT9184A pdf datasheet (RT9184/RT92008-12-12 20:12:4720RT9186/RT9186A/RT9186B pdf datThe RT9186 is a low-dropout linear regulator providing upto 500mA load current with 160mV dropout.2008-12-11 15:22:2915RT9168/RT9168A pdf datasheet (The RT9168/A is a 200mA/500mA low dropout andmicropower regulator suitable for portable2008-12-11 15:01:5612RT9300/RT9300A/RT9300B pdf datThe RT9300A/B low-dropout bias supply for white LEDsis a high-performance alternative to the simple2008-12-11 14:37:3518RT9198A/DS9198A pdf datasheetThe RT9198/A is designed for portable RF and wirelessapplications with demanding performance2008-12-11 14:36:317DS9167A/RT9167/RT9167A pdf datThe RT9167/A is a 300mA/500mA low dropout and lownoise micropower regulator suitable2008-12-11 13:56:2922RT9018/RT9018a/RT9018B pdf datThe RT9018A/B is a high performance positive voltageregulator designed for use in applications2008-12-11 12:46:4390RT9014/RT9014a pdf datasheet (RT9014/A is a dual channel, low noise, and low dropoutwith the sourcing ability up to 300mA2008-12-11 12:41:4910RT9006/RT9006A/RT9006B pdf datThe RT9006A/B is an efficient, precise dual-channel CMOSLDO regulator optimized2008-12-11 12:25:1824RT9605/RT9605A应用电路The RT9605A is a high frequency, triple-channel synchronous-rectified buck MOSFET driver specifically designed to drive six power N-MOSFETs.2008-12-11 11:39:471721RT9603应用电路RT9603应用电路:RT9603 Typical Application Circuit2008-12-11 11:34:372226RT9247应用电路The RT9247 is a multi-phase buck DC/DC controller integrated with all control functions for GHz CPU VRM.The RT9247 controls 2 or 3 buck swit2008-12-11 11:33:05980RT9246/RT9603应用电路The RT9246 is a multi-phase buck DC/DC controller integrated with all control functions for GHz CPU VRM.The RT9246 controls 2 or 3 buck swit2008-12-11 11:22:142758DRV8800 pdf datasheet (DMOS FuDesigned to control dc motors by using pulse width modulation (PWM), the DRV8800/DRV8801 is capable2008-08-19 22:44:3923RT9285A/RT9285B datasheet pdfThe RT9285 is a high frequency asynchronous boost converter with internal diode.2008-07-30 11:53:4818RT9005/RT9005A/RT9005B datasheet pdfThe RT9005A/B is a dual-output Linear regulator for DDR-SDRAM VDDQ supply and termination voltage VTT supply.2008-07-30 11:50:0144RT9164A-05 pdf datasheetThe RT9164A series of high performance positive voltage regulators is designed for applications requiring low dropout performance at fully rated current.2008-05-04 23:09:2812RT9164A-10 pdf datasheetThe RT9164A series of high performance positive voltage regulators is designed for applications requiring low dropout performance at fully rated current.2008-05-04 23:08:3012RT9166/A pdf datasheetThe RT9166/A series are CMOS low dropout regulators optimized for ultra-fast transient response.2008-05-04 23:04:278RT9167/A pdf datasheetThe RT9167/A is a 300mA/500mA low dropout and low noise micropower regulator suitable for portable applications.2008-05-04 23:02:1910RT9262/RT9262A pdf datasheetThe RT9262/A is a compact.2008-05-04 22:41:2910RT9363A pdf datasheetThe RT9363A is a compact,high efficient and highly integrated charge pump white LED driver.2008-05-04 22:30:5411RT9368A pdf datasheetThe RT9368A is a high efficeency and cost effective charge pump white LED driver.2008-05-04 22:29:0020RT9501A/RT9501B PDF datesheetThe RT9501 is a single lithium-lon or lithium-polymer cell linear battery charger which is designed for compact and cost-sensitive handheld devices.2008-05-04 22:24:3917RT9618A IC datasheet pdfThe RT9618/A is a high ferquency.2008-05-04 22:16:3920RT8110A IC资料pdfThe RT8110A is a single power supply PWM DC-DC controller designed to diive N-MOSFET in a synchronous buck topoligy.2008-04-20 23:02:1528