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FX004

更新时间： 2024-11-20 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 开关双倍数据速率控制器开关式稳压器开关式控制器电源电路存储开关式稳压器或控制器
页数 文件大小 规格书
30页 769K
描述
DDR2/3/3L/4 存储器电源解决方案同步降压控制器、2A LDO、缓冲基准 | RUK | 20 | -40 to 85

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FX004 数据手册

 浏览型号FX004的Datasheet PDF文件第2页浏览型号FX004的Datasheet PDF文件第3页浏览型号FX004的Datasheet PDF文件第4页浏览型号FX004的Datasheet PDF文件第5页浏览型号FX004的Datasheet PDF文件第6页浏览型号FX004的Datasheet PDF文件第7页 
TPS51216  
www.ti.com  
SLUSAB9 –NOVEMBER 2010  
Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck  
Controller, 2-A LDO, Buffered Reference  
Check for Samples: TPS51216  
1
FEATURES  
DESCRIPTION  
2
•
Synchronous Buck Controller (VDDQ)  
The TPS51216 provides a complete power supply for  
DDR2, DDR3 and DDR3L memory systems in the  
lowest total cost and minimum space. It integrates a  
synchronous buck regulator controller (VDDQ) with a  
2-A sink/source tracking LDO (VTT) and buffered low  
noise reference (VTTREF). The TPS51216 employs  
D-CAP™ mode coupled with 300 kHz/400 kHz  
frequencies for ease-of-use and fast transient  
response. The VTTREF tracks VDDQ/2 within  
excellent 0.8% accuracy. The VTT, which provides 2-  
A sink/source peak current capabilities, requires only  
–
–
–
–
–
Conversion Voltage Range: 3 V to 28 V  
Output Voltage Range: 0.7 V to 1.8 V  
0.8% VREF Accuracy  
D-CAP™ Mode for Fast Transient Response  
Selectable 300 kHz/400 kHz Switching  
Frequencies  
–
Optimized Efficiency at Light and Heavy  
Loads with Auto-skip Function  
10-mF of ceramic capacitance. In addition,  
dedicated LDO supply input is available.  
a
–
–
–
Supports Soft-Off in S4/S5 States  
OCL/OVP/UVP/UVLO Protections  
Powergood Output  
The TPS51216 provides rich useful functions as well  
as excellent power supply performance. It supports  
flexible power state control, placing VTT at high-Z in  
S3 and discharging VDDQ, VTT and VTTREF (soft-  
off) in S4/S5 state. Programmable OCL with low-side  
MOSFET RDS(on) sensing, OVP/UVP/UVLO and  
thermal shutdown protections are also available.  
•
2-A LDO(VTT), Buffered Reference(VTTREF)  
–
–
2-A (Peak) Sink and Source Current  
Requires Only 10-mF of Ceramic Output  
Capacitance  
–
Buffered, Low Noise, 10-mA VTTREF  
Output  
The TPS51216 is available in a 20-pin, 3 mm × 3  
mm, QFN package and is specified for ambient  
temperature from –40°C to 85°C.  
–
–
0.8% VTTREF, 20-mV VTT Accuracy  
Support High-Z in S3 and Soft-Off in S4/S5  
VIN  
•
•
Thermal Shutdown  
5VIN  
20-Pin, 3 mm × 3 mm, QFN Package  
TPS51216  
PGND  
VBST 15  
12 V5IN  
VDDQ  
APPLICATIONS  
DRVH 14  
S3  
S5  
17 S3  
16 S5  
•
DDR2/DDR3/DDR3L Memory Power Supplies  
SW 13  
•
SSTL_18, SSTL_15, SSTL_135 and HSTL  
Termination  
PGND  
DRVL 11  
PGND 10  
6
8
7
VREF  
PGOOD 20  
Powergood  
REFIN  
GND  
VDDQSNS  
VLDOIN  
VTT  
9
2
3
1
VTT  
19 MODE  
18 TRIP  
VTTSNS  
VTTGND  
VTTREF  
4
5
VTTREF  
PGND  
AGND  
UDG-10138  
AGND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
D-CAP is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010, Texas Instruments Incorporated  
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