1 x 45 W class D digital input automotive power amplifier with load current monitoring, wide voltage operation range for car audio and telematic - slug up version

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  • The FDA903U is a single bridge class D amplifier, designed in the most advanced BCD technology, intended for any automotive audio application (car radio, telematics and e-call, noise and tone generators, etc).

    The FDA903U integrates a high performance D/A converter together with powerful MOSFET outputs in class D, so it is very compact and powerful, moreover it reaches outstanding efficiency performances (90%).
    It has a very wide operating range: it can be operated both with standard car battery levels (5.5-18 V operating, compatible to load dump pulse) and with external step-down generated voltages or emergency battery (since it is compatible to minimum 3.3 V operative).
    The feedback loop includes the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion.
    FDA903U is configurable through I2C bus interface and integrates a complete diagnostics array specially intended for automotive applications including innovative open load and DC offset detection in play mode.
    Thanks to the solutions implemented to solve the EMI problems, the device is intended to be used in the standard single DIN car-radio box together with the tuner.
    Moreover FDA903U features a configurable power limiting function, and can be optionally operated under no I2C mode ('legacy mode').

    Key Features

    • AEC-Q100 qualified
    • Integrated 108 dB D/A conversion
    • I2S and TDM digital input (4/8/16CH TDM)
    • Input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
    • Full I2C bus driving (3.3/1.8 V)
    • CISPR 25 - Class V (Fourth edition)
    • Very low quiescent current
    • Output lowpass filter included in the feedback allowing outstanding audio performances
    • Wide operating supply range from 3.3 to 18 V, suitable for car radio, telematics and e-call
    • MOSFET power outputs allowing high output power capability
      • 1 x 25 W /4 Ω @ 14.4 V, 1 kHz THD = 1%
      • 1 x 30 W /4 Ω @ 14.4 V, 1 kHz THD = 10%
    • 2 Ω loads driving
    • Power limiting function (configurable through I2C)
    • I2C bus diagnostics:
      • Short to VCC/GND
      • Short load and open load detection (also in play mode)
      • Four thermal warnings
    • DC offset detector (also in play) and 'hot spot' detection
    • Clipping detector
    • Integrated thermal protection
    • Legacy mode ('no I2C' mode), 4 configurable settings
    • Short circuit and ESD integrated protections
    • Package: PowerSSO-36 exposed pad up

Sample & Buy

Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
FDA903U-KBX
Active
1000 2.8 PowerSSO 36 Tube EAR99 TAIWAN No availability of distributors reported, please contact our sales office
FDA903U-KBT
Active
1000 2.8 PowerSSO 36 Tape And Reel EAR99 TAIWAN Check Availability

Distributor availability ofFDA903U-KBT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20 1 Order Now
MOUSER WORLDWIDE 30 1 Order Now

Distributor reported inventory date: 2019-11-20

Distributor Name

DIGIKEY

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

30

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-20

Buy now

FDA903U-KBX

Marketing Status

Active

Quantity

1000

Unit Price (US$)

2.8*

Unit Price (US$)

2.8

Package

PowerSSO 36

Packing Type

Tube

ECCN (US)

EAR99

Country of Origin

TAIWAN

FDA903U-KBT

Marketing Status

Active

Quantity

1000

Unit Price (US$)

2.8*

Distributor availability ofFDA903U-KBT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20 1 Order Now
MOUSER WORLDWIDE 30 1 Order Now

Distributor reported inventory date: 2019-11-20

Distributor Name

DIGIKEY

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

30

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-20

Unit Price (US$)

2.8

Package

PowerSSO 36

Packing Type

Tape And Reel

ECCN (US)

EAR99

Country of Origin

TAIWAN

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

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Evaluation Tools

    • Part Number

      EVAL-FDA903U evaluation board for FDA903U

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12498
      1 x 45 W class D digital input automotive power amplifier with ILoad current monitoring, wide voltage operation range for car audio and telematic
      2.0
      1.37 MB
      PDF
      DS12498

      1 x 45 W class D digital input automotive power amplifier with ILoad current monitoring, wide voltage operation range for car audio and telematic

Publications and Collaterals

    • Description Version Size Action
      FDA Family – Full digital audio amplifiers for car infotainment systems 1.0
      911.83 KB
      PDF

      FDA Family – Full digital audio amplifiers for car infotainment systems

    • Description Version Size Action
      Power amplifiers and voltage regulators
      750.29 KB
      PDF

      Power amplifiers and voltage regulators

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
FDA903U-KBT
Active
PowerSSO 36 Automotive Ecopack2
FDA903U-KBX
Active
PowerSSO 36 Automotive Ecopack2

FDA903U-KBT

Package:

PowerSSO 36

Material Declaration**:

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

FDA903U-KBX

Package:

PowerSSO 36

Material Declaration**:

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

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.

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