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

• Output Ramps Up in 35 μs

• 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 DFN3X3-10

• Pb−Free and 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

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 TPL51201 is a series of 3-A sink and source

DDR termination regulators specifically designed for DDR

applications with heavy space limitations. The TPL51201

series implements a fast load-transient response and only

requires a minimum output capacitance of 20 μF.

The TPL51201 series supports a remote-sensing function

and all power requirements for DDR VTT bus termination.

In addition, the TPL51201 series provides an open-drain

PG signal for VTT regulation indication and an EN signal

that can be used to discharge VTT for DDR applications.

The TPL51201 series is available in the thermally efficient

DFN3x3-10 package with a thermal pad, and supports the

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