TPS51200_1 Datasheet, PDF (1/35 Pages) Texas Instruments – SINK/SOURCE DDR TERMINATION REGULATOR

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SINK/SOURCE DDR TERMINATION REGULATOR
TPS51200
SLUS812 – FEBRUARY 2008
FEATURES
1
•2 Input Voltage: Supports 2.5-V Rail and 3.3-V
Rail
• VLDOIN Voltage Range: 1.1 V to 3.5 V
• Sink/Source Termination Regulator Includes
Droop Compensation
• Requires Minimum Output Capacitance of
20-µF (typically 3 × 10-µF MLCCs) for Memory
Termination Applications (DDR)
• PGOOD to Monitor Output Regulation
• EN Input
• REFIN Input Allows for Flexible Input Tracking
Either Directly or Through Resistor Divider
• Remote Sensing (VOSNS)
• ±10-mA Buffered Reference (REFOUT)
• Built-in Soft Start, UVLO and OCL
• Thermal Shutdown
• Meets DDR, DDR2 JEDEC Specifications;
Supports DDR3 and Low-Power DDR3/DDR4
VTT Applications
• SON-10 PowerPAD™Package
APPLICATIONS
• Memory Termination Regulator for DDR,
DDR2, DDR3, and Low Power DDR3/DDR4
• Notebook/Desktop/Server
• Telecom/Datacom, GSM Base Station,
LCD-TV/PDP-TV, Copier/Printer, Set-Top Box
DESCRIPTION
The TPS51200 is a sink/source Double Data Rate
(DDR) termination regulator specifically designed for
low input voltage, low-cost, low-noise systems where
space is a key consideration.
The TPS51200 maintains a fast transient response
and only requires a minimum output capacitance of
20 µF. The TPS51200 supports a remote sensing
function and all power requirements for DDR, DDR2,
DDR3, and Low Power DDR3/DDR4 VTT bus
termination.
In addition, the TPS51200 provides an open-drain
PGOOD signal to monitor the output regulation and
an EN signal that can be used to discharge VTT
during S3 (suspend to RAM) for DDR applications.
The TPS51200 is available in the thermally-efficient
SON-10 PowerPAD package, and is rated both
Green and Pb-free. It is specified from -40°C to
+85°C.
STANDARD DDR APPLICATION
VDDQ
TPS51200
1 REFIN
VIN 10
3.3 V_IN
VLDOIN
VTT
2 VLDOIN PGOOD 9
3 VO
GND 8
4 PGND
EN 7
5 VOSNS REFOUT 6
PGOOD
SLP_S3
VTTREF
0.1 mF
UDG-08025
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.
PowerPAD is a trademark of Texas Instruments.
2
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 © 2008, Texas Instruments Incorporated