PM8908

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Monolithic buck converter for DDR memory termination

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Product overview

Description

The PM8908 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 PM8908also provides external tracking support.

The PM8908 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 PM8908 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

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STMicroelectronics - PM8908

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
PM8908TR
Active
QFN20 3.5x4 Industrial Ecopack2

PM8908TR

Package:

QFN20 3.5x4

Material Declaration**:

XML

Marketing Status

Active

Package

QFN20 3.5x4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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PM8908TR Available at distributors

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Active
EAR99 NEC Tape and Reel QFN20 3.5x4 - - PHILIPPINES

PM8908TR Active

Package:
QFN20 3.5x4
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

PM8908TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

PHILIPPINES

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors