ST Life.augmented


Low voltage operation, high sound quality quad BTL output power amplifier with st-by and mute inputs, clip and offset detection
  • active Active

The STPA001 is a breakthrough MOSFET technology class AB audio power amplifier designed for high power car radio. The fully complementary P-Channel/N-Channel output structure allows a rail to rail output voltage swing which, combined with high output current and minimized saturation losses sets new power references in the car-radio field, with unparalleled distortion performances.

The STPA001 can operate down to 6V and this makes the IC compliant to the most recent OEM specifications for low voltage operation (so called 'start-stop' battery profile during engine stop), helping car manufacturers to reduce the overall emissions and thus contributing to environment protection.

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Errata Sheet
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Key Features

  • Multipower BCD technology
  • High output power capability:
  • 4 x 50 W/4 Ω Max.
  • 4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10 %
  • 4 x 72 W/2 Ω Max.
  • MOSFET output power stage
  • 2 Ω driving capability
  • Hi-Fi class distortion
  • Low output noise
  • High immunity to RF noise injection
  • Standby function
  • Mute function
  • Automute at min. supply voltage detection
  • Low external component count
  • Internally fixed gain (26 dB)
  • Protections:
  • Output short circuit to GND, to Vs, across the load
  • Very inductive loads
  • Overrating chip temperature with soft thermal limiter
  • Output DC offset detection
  • Load dump
  • Fortuitous open GND
  • Reversed battery
  • ESD
  • Capable to operate down to 6 V (e.g. “Startstop”)

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS8990: 4 x 50 W MOSFET quad bridge power amplifier
7.0 634 KB

Publications and Collaterals


Description Version Size
Car-audio power amplifiers
1.0 1,331 KB

Selection Guides

Description Version Size
Power amplifiers and voltage regulators
750 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STPA001ActiveFLEXIWATT FM2 25Tube-40105Yes-5.08No availability reported, please contact our Sales officeEcopack2-
STPA001AActiveFLEXIWATT FM2 27Tube-40105Yes-5.2No availability reported, please contact our Sales officeEcopack2-
STPA001AHActiveFLEXIWATT 27 HBTube-40105Yes-5.7No availability reported, please contact our Sales officeEcopack2PDF
STPA001HActiveFLEXIWATT 25 HBTube-40105Yes-5.72No availability reported, please contact our Sales officeEcopack2-

(*) 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
(**) The Material Declaration forms available on 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.