Features

• Operating Voltage Range:

- VDDQ Supply: 0.9V to 3.6V

- Bias Supply: 2.5V to 5.5V

• High Bandwidth: Very Fast Transient Response

• Stable with Two 10 µF Ceramic Output Capacitors

• Two 10 µF Output Capacitors used in Most

Applications

• High Output Voltage Accuracy:

- 0.015% Line Regulation

- 1.5% Load Regulation

• Logic Level Enable Input

• Power Good (PG)

• Thermally Enhanced 3 mm x 3 mm DFN

• Junction Temperature Range –40°C to +125°C

• This Device Meets DDR4 Requirements

Applications

• Desktop Computers

• Notebook Computers

• Datacom Systems

• Servers

• Video Cards

General Description

The MIC5166 is a 3A, high-speed, linear, low VIN,

double data rate (DDR), memory terminator power

supply. The part is small and requires small output

capacitors, making it a tiny overall solution. This allows

it to be conveniently placed close to the DDR memory,

minimizing circuit board layout inductance that may

cause excessive voltage ripple at the DDR memory.

The MIC5166 contains a precision voltage divider

network in order to take in the VDDQ voltage as a

reference voltage and conveniently output the

terminator voltage (VTT) at one half of the VDDQ input

voltage.

The MIC5166 is capable of sinking and sourcing up to

3A. It is stable with only two 10 µF ceramic output

capacitors. The part is available in a small 3 mm x

3 mm DFN thermally-enhanced package.

The MIC5166 has a high-side NMOS output stage

offering very low output impedance, and very high

bandwidth. The NMOS output stage offers a unique

ability to respond very quickly to sudden load changes

such as is required for DDR memory termination power

supply applications.