Datasheet > EEFSX0D331XE

EEFSX0D331XE

更新时间： 2024-11-22 12:50:39

品牌	Logo	应用领域
德州仪器 - TI		存储双倍数据速率
页数	文件大小	规格书
34页	975K
描述
Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck

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EEFSX0D331XE 数据手册

TPS51916

www.ti.com

SLUSAE1D –DECEMBER 2010–REVISED JUNE 2012

Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck

Controller, 2-A LDO, Buffered Reference

FEATURES

DESCRIPTION

The TPS51916 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 TPS51916 employs

D-CAP™ mode coupled with 300 kHz/400 kHz

frequencies for ease-of-use and fast transient

response or D-CAP2™ mode coupled with higher

500 kHz/670 kHz frequencies to support ceramic

output capacitor without an external compensation

circuit. The VTTREF tracks VDDQ/2 within excellent

0.8% accuracy. The VTT, which provides 2-A

sink/source peak current capabilities, requires only

•

Synchronous Buck Controller (VDDQ)

–

Conversion Voltage Range: 3 V to 28 V

Output Voltage Range: 0.7 V to 1.8 V

0.8% V_REFAccuracy

Selectable Control Architecture

–

D-CAP™ Mode for Fast Transient

Response

–

D-CAP2™ Mode for Ceramic Output

Capacitors

–

Selectable 300 kHz/ 400 kHz/ 500 kHz/

670 kHz Switching Frequencies

Optimized Efficiency at Light and Heavy

Loads with Auto-skip Function

10-μF of ceramic capacitance. In addition,

dedicated LDO supply input is available.

–

Supports Soft-Off in S4/S5 States

OCL/OVP/UVP/UVLO Protections

Powergood Output

The TPS51916 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 R_DS(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-μF of Ceramic Output

Capacitance

The TPS51916 is available in a 20-pin, 3 mm × 3

mm, QFN package and is specified for ambient

temperature from –40°C to 85°C.

–

Buffered, Low Noise, 10-mA VTTREF

Output

VIN

–

0.8% VTTREF, 20-mV VTT Accuracy

Support High-Z in S3 and Soft-Off in S4/S5

5VIN

TPS51916

•

Thermal Shutdown

PGND

VBST 15

12 V5IN

VDDQ

20-Pin, 3 mm × 3 mm, QFN Package

DRVH 14

17 S3

16 S5

SW 13

APPLICATIONS

PGND

DRVL 11

PGND 10

•

DDR2/DDR3/DDR3L Memory Power Supplies

VREF

SSTL_18, SSTL_15, SSTL_135 and HSTL

Termination

PGOOD 20

Powergood

REFIN

GND

VDDQSNS

VLDOIN

VTT

19 MODE

18 TRIP

VTTSNS

VTTGND

VTTREF

UDG-10193

AGND PGND

AGND

PGND

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.

D-CAP, D-CAP2 are trademarks 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.

12 3 4 5 6 7...34

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EEFSX0D331XR	PANASONIC	获取价格	Surface Mount Type
EEFSX0D391E4	PANASONIC	获取价格	Surface Mount Type
EEFSX0D391E4	PACELEADER	获取价格	SP-Cap/ Conductive Polymer Aluminum Capacitors (Specialty Polymer Aluminum Capacitors)
EEFSX0D391ER	PACELEADER	获取价格	SP-Cap/ Conductive Polymer Aluminum Capacitors (Specialty Polymer Aluminum Capacitors)
EEFSX0D391ER	PANASONIC	获取价格	Surface Mount Type
EEFSX0D391R	PANASONIC	获取价格	Surface Mount Type
EEFSX0D391XE	PACELEADER	获取价格	SP-Cap/ Conductive Polymer Aluminum Capacitors (Specialty Polymer Aluminum Capacitors)
EEFSX0D391XE	PANASONIC	获取价格	Surface Mount Type
EEFSX0D391XR	PANASONIC	获取价格	Surface Mount Type
EEFSX0D471E4	PANASONIC	获取价格	Surface Mount Type

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