特性 Features

? VIN Voltage: Support 2.5-V, 3.3-V and 5-V Power Rails

? VLDOIN Voltage Range: 1.1 V to 3.5 V

? Flexible Input Voltage Tracking Directly from REFIN or

Through External Resistor Divider

? 3-A Sink and Source Current Capability for DDR

Termination

? Integrated Power MOSFETs

? Output Remote Sensing

? Fast Load-Transient Response

? Open-Drain Power Good to Monitor OUT Regulation

? Built in Soft-Start and UVLO, Current Limit and Thermal

Shutdown Protection

? Support DDR, DDR2, DDR3, DDR3L, Low Power DDR3

and DDR4 VTT Applications

? Operating Temperature Range: –40°C to +125°C

? Small Package with 3×3 DFN-10

? Pb?Free and are RoHS Compliant

Applications

? Memory VTT Regulator for DDR, DDR2, DDR3, DDR3L,

Low Power DDR3 and DDR4

? Notebooks, Desktops, and Workstations

? Servers, Networking equipment and Datacenters

? Telecom and Base Station

描述 Description

With the development of main processors in PCs and servers,

more and more source double-data-rate (DDR) memories are

required in the mainboard, where the input voltage becomes

lower and lower, and space limitation becomes higher and

higher.

The TPL51200 series devices are 3-A sink and source DDR

termination regulators specifically designed for the DDR

applications with heavy space limitation. The TPL51200 series

devices implement a fast load-transient response and only

requires a minimum output capacitance of 20 μF.

The TPL51200 series devices support a remote-sensing

function and all power requirements for DDR VTT bus

termination. In addition, the TPL51200 series devices provide

an open-drain PG signal for VTT regulation indication and an

EN signal that can be used to discharge VTT for DDR

applications.

The TPL51200 series devices are available in the thermally

efficient 10-pin 3×3 DFN package with thermal pad, and support

the operating temperature range from –40°C to +125°C.