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The PM8908TR is a high efficiency monolithic step-down switching regulator designed mainly for the DDR termination.

The IC operates from 1 V to 3.5 V input voltage (VIN).

The device uses a COT control loop that provides very good performances in terms of load and line transients. The current sense is internally thermally compensated for optimum precision.

The output voltage is adjusted from 0.5 V to 2 V with ± 1% accuracy overtemperature variations.

The PM8908TR also provides external tracking support.

The PM8908TR provides positive and negative overcurrent protection as well as over/undervoltage and overtemperature protection. PGOOD output easily provides real-time information on the output voltage.

The PM8908TR is available in a QFN20 3.5 x 4.0 mm package.

All Features

Integrated MOSFETs for high efficiency

Current COT architecture

1 V to 3.5 V input voltage (VIN)

5.0 V supply voltage (VCC)

Constant frequency mode

1% output voltage accuracy

Two programmable switching frequencies (0.6 MHz or 1 MHz)

ADJ output voltage from 0.5 V to 2 V

Embedded bootstrap diode

OV/UV/OC and overtemperature protection

Soft-off with integrated discharge resistor

External tracking

Power Good output

QFN20 3.5 x 4.0 mm compact package

Applications

• Memory termination regulator for DDR3, DDR4 and low power DDR3/DDR4

• Notebook/desktop/server

• Low voltage application for 1 V to 3.5 V input rails

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