STPA002CD-48X - 4x52W Class AB Audio Amplifier | STMicroelectronics
Teilenummer: STPA002CD-48X ✓ AktivSTPA002CD-48X Übersicht
An audio power amplifier is an integrated circuit that drives loudspeakers with sufficient voltage, current, and thermal capability to reproduce music and speech. The STPA002 belongs to the Class AB linear audio-amplifier hierarchy, where MOSFET output stages operate in a predominantly linear region for low crossover distortion. Its four-channel architecture can support four speakers or two stereo bridge-tied speaker networks while retaining conventional analog signal paths.
Key features include 4 x 52 W maximum output into 4 ohms, 4 x 30 W at 14.4 V under the stated 1 kHz and 10% distortion conditions, standby and mute inputs, clip detection, and offset detection. The verified manufacturer description identifies it as a MOSFET Class AB amplifier designed specifically for high-power car-radio equipment. Low-voltage operation is particularly important in start-stop automotive systems, where the available supply can vary substantially during cranking and engine restart.
The device uses four integrated Class AB output stages rather than a switching topology. This avoids the switching-frequency electromagnetic-interference and filter considerations associated with Class D designs, while making amplifier efficiency and heat management more dependent on supply voltage, output power, load impedance, and speaker impedance matching. The producer therefore controls output-stage dissipation through the Flexiwatt package and PCB copper area.
Typical applications include automotive head units, car-radio amplifiers, four-speaker cabin systems, and low-voltage mobile audio installations. In a typical bridge-tied circuit, two output channels operate together to drive one speaker, while four channels support four separate speaker loads or two stereo pairs. The mute and standby inputs permit system-level shutdown and ignition-state control without removing the complete audio subsystem from the vehicle.
Designers should verify speaker impedance, supply voltage, channel configuration, thermal rise, and protection behavior against the manufacturer datasheet before production. The 27-Flexiwatt vertical package is a power-dissipating surface-mount package and requires adequate PCB copper, clean signal routing, robust supply bypassing, and careful output-pad layout. Speaker outputs must also remain isolated from chassis ground unless the selected bridge-tied configuration and system grounding plan require otherwise.
This product data combines the verified STMicroelectronics product description with distributor availability, package identification, and technical comparison data. It also identifies the limited drop-in replacement evidence found in the supplied cross-reference results, allowing engineers to distinguish a documented same-package candidate from unsupported guesses.
Drop-in-Alternativen für STPA002CD-48X – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
TDA7577BLV
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
STPA002CD-48X Grenzwerte & elektrische Eigenschaften
| Amplifier Type | 4-channel Class AB audio power amplifier |
| Output Stage | MOSFET |
| Maximum Output Power | 4 x 52 W into 4 ohms |
| Output Power at 14.4 V | 4 x 30 W into 4 ohms at 1 kHz and 10% distortion |
| Nominal Output Power | 55 W per channel |
| Harmonic Distortion | 0.01% |
| Betriebsversorgungsspannung | 6 V to 18 V |
| Nominal Bandwidth | 0.02 kHz |
| Control Inputs | Standby and mute inputs |
| Protection Features | Clip and offset detection |
| Gehäuse | 27-Flexiwatt vertical |
| Montageart | Surface mount |
| Primary Application | High-power car radio |
STPA002CD-48X 27-flexiwatt vertical Pinbelegungsleitfaden
Pinbelegung für STPA002CD-48X (27-flexiwatt vertical-Gehäuse). Dieses analoge Bauteil verfügt über Eingangs-, Ausgangs- und Versorgungspins. Offset-Null-, Kompensations- und Enable-Pin-Konfigurationen entnehmen Sie dem Herstellerdatenblatt. Ideal für Signalaufbereitung und Verstärkerschaltungen.
Keine detaillierten Pinbelegungsdaten verfügbar für STPA002CD-48X.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
STPA002CD-48X ist geeignet für 6 Anwendungs: Automotive Head-Unit Power Stage, Four-Speaker Cabin Audio System, Start-Stop Vehicle Audio, Low-Voltage Mobile Speaker System, Audio-System Mute and Standby Control, Robust Automotive Speaker Drive.
Automotive Head-Unit Power Stage
The STPA002CD-48X fits a high-power automotive head-unit or car-radio design because it combines four Class AB channels with operation from 6 V to 18 V. The verified 4 x 30 W output condition at 14.4 V provides a useful automotive operating benchmark, while the maximum rating reaches 4 x 52 W into 4 ohms. The amplifier can support four independent channels or two bridge-tied stereo pairs. Its standby and mute inputs simplify ignition-linked and source-mute control. Designers should verify transient behavior, speaker configuration, and thermal rise using the manufacturer application guidance.
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Four-Speaker Cabin Audio System
The STPA002CD-48X is suitable for a four-speaker vehicle cabin system because its four channels can each drive a 4-ohm speaker load under the documented conditions. The verified maximum specification is 4 x 52 W, while the repeatable test point supplied for this device is 4 x 30 W at 14.4 V, 1 kHz, and 10% distortion. This arrangement preserves separate left-front, right-front, left-rear, and right-rear amplification without adding another power-amplifier package. Speaker sensitivity, crossover loading, and amplifier heat must be evaluated together before fixing the final channel gains.
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Start-Stop Vehicle Audio
The STPA002CD-48X is explicitly intended for start-stop vehicle audio, where the battery bus may fall below the usual nominal 14.4 V condition. Its documented 6 V to 18 V operating range and low-voltage design focus address this use case better than a conventional high-voltage car-audio amplifier. The standby input allows the audio chain to remain inactive during vehicle off states, while mute can suppress the signal during control events. Production designs must still validate load-dump protection, cranking transients, thermal behavior, and all OEM electrical requirements not quantified in the supplied data.
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Low-Voltage Mobile Speaker System
The STPA002CD-48X can serve as the power stage in a low-voltage mobile-audio installation requiring several 4-ohm speakers. Its 6 V to 18 V operating range supports systems operating from automotive-style battery rails, while four MOSFET Class AB channels reduce the number of amplifier packages required for a multi-speaker layout. Compared with a switching Class D solution, a Class AB design avoids output inductors and switching-filter components, but it generally requires more careful attention to heat dissipation at low output voltage and high load current. Use the manufacturer thermal data to establish copper-area requirements.
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Audio-System Mute and Standby Control
The STPA002CD-48X is appropriate for an automotive audio architecture in which standby and mute must be controlled independently. The verified feature set includes both control inputs, allowing the amplifier to enter a low-power state when the vehicle is off or to mute audio during source changes and system events. These functions simplify firmware and hardware coordination compared with repeatedly reconfiguring the output stage. Designers should confirm logic thresholds, activation polarity, startup sequencing, and pop-noise behavior from the full datasheet before directly connecting host-controlled signals.
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Robust Automotive Speaker Drive
The STPA002CD-48X fits automotive speaker-drive designs where resistance to accidental connection errors is important. STMicroelectronics specifically describes the STPA002 as robust against several kinds of fortuitous misconnections, and the device also includes clip and offset detection for system monitoring. These features help distinguish intended operating behavior from faults without replacing the need for external protection. Production engineering should confirm the exact protected conditions, fault-response timing, speaker wiring constraints, and fault-reporting strategy using the complete manufacturer documentation.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für STPA002CD-48X – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | TDA7577BLV |
|---|---|---|
| Package | 27-Flexiwatt vertical | 27-Flexiwatt vertical |
| Brand | STMicroelectronics | NXP Semiconductors |
| Amplifier Class | Class AB | Class SB |
| Channel Configuration | 4-channel | 1-channel mono or 2-channel stereo |
| Maximum Output Power | 4 x 52 W | 155 W/75 W |
Wichtigste Unterscheidungsmerkmale
- True four-channel Class AB output architecture (vs. TDA7577BLV)
- Documented four-channel maximum output (vs. TDA7577BLV)
- Integrated system-control and fault features (vs. TDA7577BLV)
Designhinweise
Treat the 27-Flexiwatt vertical package as a heat-dissipation component rather than only a lead carrier. Class AB output current can rise substantially when the output voltage is low relative to the supply or when a 4-ohm speaker is driven near the documented 4 x 30 W condition. Use the manufacturer thermal-resistance and maximum-junction-temperature data for the exact PCB construction, provide continuous copper beneath and around the package, and avoid enclosing the amplifier in an unventilated enclosure without a validated thermal calculation.
Place the input, feedback, bypass, and speaker-output components according to the manufacturer reference layout. Keep sensitive audio inputs away from the high-current output and supply paths, use short and wide conductors for BTL outputs, and connect the exposed thermal tab with a low-impedance copper path. The exact pin numbers are not present in the supplied web results, so the final routing must follow the complete STPA002CD-48X datasheet rather than a generic Flexiwatt land pattern.
Do not treat identical package dimensions as proof that the TDA7577BLV is a drop-in replacement. The STPA002CD-48X is a four-channel Class AB amplifier, while the TDA7577BLV is a one-channel mono or two-channel stereo Class-SB device. Before substitution, compare every pin, input configuration, feedback network, supply limit, control polarity, output topology, thermal limit, and protection behavior. A PCB respin is preferable to an unverified population.
Design the supply path for both average audio power and startup or fault transients. Decoupling capacitors should be placed directly at the amplifier supply pins, while wiring from battery or source to the Flexiwatt tab must use conductors wide enough for the required channel current. Confirm the regulator's behavior at the 6 V minimum operating condition and account for vehicle cranking and load-dump events. The supplied data does not specify the permitted input transients, so vehicle-level validation remains necessary.
Compliance-Informationen
The supplied product and distributor snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The automotive application description does not by itself establish AEC-Q100 qualification.
