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RT8800AGQV PDF预览

RT8800AGQV

更新时间： 2024-02-27 16:48:05
品牌 Logo 应用领域
立锜 - RICHTEK 控制器
页数 文件大小 规格书
21页 482K
描述
General Purpose 3-Phase PWM Controller for High-Density Power Supply

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RT8800AGQV 技术参数

Status：ActiveVID Table Support：K8;VR10
Number of Phases：3Vcc (typ) (V)：5
Vin (min) (V)：10.8Vin (max) (V)：13.2
Accuracy (Vout>=1V) (+/- %)：1.25Freq (typ) (kHz)：300
Built-in DAC Generator：YesNumber of MOSFET Drivers：0
Features：Adjustable Frequency;DCR Current Sense;Droop Control;OCP;OVP;Power Good;SCP;Voltage Mode ControlPackage Type：VQFN3x3-16

RT8800AGQV 数据手册

 浏览型号RT8800AGQV的Datasheet PDF文件第2页浏览型号RT8800AGQV的Datasheet PDF文件第3页浏览型号RT8800AGQV的Datasheet PDF文件第4页浏览型号RT8800AGQV的Datasheet PDF文件第5页浏览型号RT8800AGQV的Datasheet PDF文件第6页浏览型号RT8800AGQV的Datasheet PDF文件第7页 
RT8800A  
General Purpose 3-Phase PWM Controller for High-Density  
Power Supply  
General Description  
Features  
z 5V Power Supply Voltage  
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.  
z 2/3-Phase Power Conversion with Automatic Phase  
Selection  
z Output Voltage Controlled by External Reference  
Voltage  
z Precise Core Voltage Regulation  
z Power Stage Thermal Balance by DCR Current  
Sensing  
The output voltage is precisely regulated to the external  
reference voltage at PI pin. The RT8800Acan provide Intel®  
VRD10.x or AMD® K8 compliant output voltage when  
companioned withDAC generator RT9401A/B.  
z Extreme Low-Cost, Lossless Time Sharing Current  
Sensing  
z Internal Soft-Start  
z Hiccup Mode Over-Current Protection  
z Over-Voltage Protection  
The RT8800Aadopts innovative time-sharingDCR 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 ofGM 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.  
z Adjustable Operating Frequency and Typical at  
300kHz Per Phase  
z Power Good Indication  
z Small 16-Lead VQFN Package  
z RoHS Compliant and 100% Lead (Pb)-Free  
Applications  
z Desktop CPU Core Power  
z Low Output Voltage, High Power Density DC-DC  
Converters  
Other features include overvoltage protection, undervoltage  
protection and internal softstart. The RT8800A comes to  
a VQFN-16L 3x3 package.  
z Voltage Regulator Modules  
Marking Information  
Ordering Information  
For marking information, contact our sales representative  
directly or through a Richtek distributor located in your  
area, otherwise visit our website for detail.  
RT8800A  
Package Type  
QV : VQFN-16L 3x3 (V-Type)  
Operating Temperature Range  
P : Pb Free with Commercial Standard  
G : Green (Halogen Free with Commer-  
cial Standard)  
Note :  
Richtek Pb-free and Green products are :  
`RoHS compliant and compatible with the current require-  
ments of IPC/JEDEC J-STD-020.  
`Suitable for use in SnPb or Pb-free soldering processes.  
`100% matte tin (Sn) plating.  
All brand name or trademark belong to their owner respectively  
DS8800A-04 August 2007  
www.richtek.com  
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