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Home > Products > Integrated Circuits (ICs) > Linear > Audio Amplifiers

STMicroelectronics TDA7575BPDTR

Name: TDA7575BPDTR
Brand: STMicroelectronics
SKU: TDA7575BPDTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7575BPDTR

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: PowerSO-36 Exposed Top Pad

Datasheet:: TDA7575BPDTR.pdf

Description:: IC AMP AB MONO/STER 150W PWRSO36

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TDA7575BPDTR from STMicroelectronics is a dual-channel Class AB MOSFET audio power amplifier IC designed for automotive head unit applications. It delivers up to 2×75 W into 2 Ω or 1×150 W into 1 Ω, features integrated I²C-controlled digital diagnostics, differential inputs, and full fault protection including DC offset detection and dual short-circuit monitoring - enabling robust speaker management in compact car radio designs.

For engineers reviewing the TDA7575BPDTR datasheet, TDA7575BPDTR pinout, TDA7575BPDTR application, or TDA7575BPDTR equivalent, key selection considerations include its 1 Ω single-channel drive capability, programmable clipping threshold (2 % / 10 %), I²C address configurability (4 options), and thermal warning/protection thresholds at 150 °C / 170 °C.

Technical Context

The TDA7575BPDTR implements a DMOS-based dual-bridge output stage with multipower BCD technology, supporting both standard bridge-tied load (BTL) and high-efficiency (HE) modes. Its internal diagnostic engine performs turn-on and permanent AC/DC load analysis via dedicated pins (CD_OUT, 1Ω, SVR) and reports status over I²C.

It integrates dual independent short-circuit protections per channel, selectable clipping detection, and supports 1 Ω parallel operation via logic-level 1Ω pin control. Standby/mute functions are implemented through dedicated pins with defined voltage thresholds (e.g., V_SB = 3.5–5 V for standard bridge standby).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	2×75 W @ 2 Ω, 1×150 W @ 1 Ω - enables high-power mono or stereo configurations without external current boosting.
THD+N	0.02 % @ 4–30 W, 1 Ω - ensures low-distortion audio reproduction even under demanding low-impedance loads.
I²C Interface	4 configurable addresses, 400 kHz max clock - allows multi-device bus sharing and flexible system-level diagnostics integration.
Clipping Detection	Selectable 2 % or 10 % THD threshold - provides precise signal integrity monitoring adaptable to speaker sensitivity and acoustic tuning.
Fault Protection	Dual independent short-circuit detection + DC offset detection + thermal warning (150 °C) - prevents latch-up and enables safe fail-safe recovery.
Supply Range	8–18 V operating, 28 V absolute max - compatible with automotive battery systems including cold-crank and load-dump transients.
Quiescent Current	50–130 mA typical @ 14.4 V - balances low idle consumption with fast wake-up response for infotainment power management.

Pinout & Package

Package: PowerSO36 (slug up) - thermally enhanced exposed die pad for direct PCB heatsinking; RoHS-compliant, surface-mount.

Pin	Circuit Role	Design Meaning
OUT1+/OUT1−, OUT2+/OUT2−	Dual bridge outputs	Drive speakers in BTL mode; support 1 Ω parallel configuration when 1Ω pin > 2.5 V.
IN1+/IN1−, IN2+/IN2−	Differential audio inputs	Reject common-mode noise; enable balanced signal routing in noisy automotive environments.
ST-BY/HE	Mode-select standby pin	0–1.5 V = standby; 3.5–5 V = standard bridge; 7–18 V = high-efficiency mode - configures bias and efficiency profile.
MUTE	Signal muting control	0–1.5 V = mute (≥80 dB attenuation); 3.5–18 V = play - hardware-fast mute without I²C dependency.
1Ω	Single-channel configuration enable	>2.5 V activates 1 Ω mono mode; <1.5 V enables dual-channel operation - direct hardware reconfiguration.
CD_OUT	Clipping diagnostic output	Active-high open-drain pin indicating clipping event; functional even when I²C is disabled.
I2C-EN	I²C interface enable	0–1.5 V = disable I²C (use ST-BY/MUTE only); ≥2.5 V = enable full I²C diagnostics and control.
SVR	Speaker voltage reference	Monitors output DC offset; used by internal diagnostics to detect open/short loads during turn-on and runtime.
TAB	Thermal slug / GND	Exposed copper pad tied to PW_GND; must be soldered to large PCB copper area for thermal dissipation (R_{th j-case} = 1 °C/W).

Key Features

Feature	Design Value
Dual independent short-circuit protection	Per-channel detection with separate thresholds for GND/VS shorts - avoids false shutdown during transient speaker impedance dips.
Programmable clipping threshold	2 % or 10 % THD selectable via I²C register - aligns diagnostic sensitivity with speaker power handling and acoustic design goals.
Turn-on and permanent diagnostics	Real-time AC/DC load verification at power-up and continuously during playback - detects open, short, and abnormal Z_L (1.5–70 Ω normal range).
1 Ω single-channel capability	Hardware-enabled mono mode via 1Ω pin - eliminates need for external paralleling circuitry while maintaining full 150 W output.
Thermal warning & protection	Warning flag at 150 °C, hard shutdown at 170 °C - provides early thermal margin indication before irreversible junction damage.

Applications

Automotive Head Unit

Aftermarket Stereo Amplifier

Use Scenario: Integrated 4-channel audio processing and amplification in OEM dashboard radios with space-constrained metal enclosures.

IC Role / Device Role / Timing Role: Dual-bridge power driver with real-time speaker health monitoring via I²C - replaces discrete protection circuits and reduces BOM count.

Use Value: Enables automatic speaker fault logging and graceful mute-on-fail behavior without MCU intervention, improving field reliability.

Use Scenario: Compact 2×75 W replacement amplifier module for legacy car audio systems requiring plug-and-play upgrade.

IC Role / Device Role / Timing Role: High-efficiency Class AB amplifier with hardware mute/standby pins - simplifies control interface for microcontroller-limited designs.

Use Value: Delivers undistorted 84 W continuous output at 1 % THD into 4 Ω, reducing heatsink size by ~50 % vs. conventional AB solutions.

Compact Subwoofer Driver

Multi-Zone In-Cabin Audio

Use Scenario: Single-channel 150 W subwoofer driver in space-limited trunk-mounted enclosures using 1 Ω voice coils.

IC Role / Device Role / Timing Role: Mono-configurable power stage with DC offset and thermal monitoring - ensures safe low-impedance operation without external current sensing.

Use Value: Eliminates need for external current-sense resistors and op-amps, lowering component count and PCB area by 30 %.

Use Scenario: Zone-specific audio distribution in premium vehicles with independent front/rear/surround speaker sets.

IC Role / Device Role / Timing Role: Dual-channel amplifier with independent diagnostics per channel - enables per-zone fault isolation and targeted error reporting.

Use Value: Supports simultaneous diagnostics on four speakers (via two TDA7575BPDTRs), reducing system-level debug time by enabling root-cause identification per zone.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-bridge automotive audio amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7560	Lower max output (2×45 W @ 4 Ω), no 1 Ω mono mode, fixed 26 dB gain - lacks I²C programmability and diagnostic granularity.	Targeted at entry-level head units without advanced speaker diagnostics or ultra-low-Z requirements.	Select when cost sensitivity outweighs diagnostic depth and 1 Ω capability; requires external mute logic.
STA559BW	Digital input (I²S), Class D topology, higher efficiency (>90 %), but no analog differential inputs or DC offset detection.	Suitable for DSP-driven architectures where digital audio path and thermal efficiency are prioritized over analog flexibility.	Choose for battery-powered portable audio or hybrid systems needing lower quiescent power and smaller heatsinks.

Compared with TDA7575BPDTR, TDA7560 offers reduced feature set and output capability but lower system cost, while STA559BW trades analog interface fidelity and DC diagnostics for superior efficiency and digital-native integration - making TDA7575BPDTR optimal for analog-centric, diagnostics-heavy automotive platforms.

Availability

TDA7575BPDTR is available at Aetrix Electronics and suitable for automotive infotainment systems, aftermarket amplifier modules, and compact subwoofer drivers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TDA7575BPDTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing and AEC-Q100 qualified processes.

The TDA7575BPDTR belongs to ST's TDA7xxx automotive audio amplifier product line, engineered specifically for high-reliability, thermally constrained car radio applications requiring integrated diagnostics and flexible output configuration.

FAQ

What is the maximum continuous output power of the TDA7575BPDTR into 2 Ω?

The TDA7575BPDTR delivers up to 2×75 W into 2 Ω at 10 % THD with 14.4 V supply, verified per datasheet Table 4. This rating assumes proper PCB thermal design (PowerSO36 slug soldered to ≥10 cm² copper) and ambient temperature ≤ 70 °C. Derating applies above 70 °C case temperature.

Can the TDA7575BPDTR drive a 1 Ω load in dual-channel mode?

No - the 1 Ω capability is exclusive to single-channel (mono) configuration, enabled only when the 1Ω pin voltage exceeds 2.5 V. In dual-channel mode, minimum safe load is 2 Ω per bridge. Attempting 1 Ω in stereo mode risks triggering short-circuit protection or thermal shutdown.

How does the I²C diagnostic interface behave when I2C-EN is pulled low?

When I2C-EN is ≤1.5 V, the I²C interface is fully disabled: SDA/SCL pins become high-impedance, internal registers are inaccessible, and all I²C-dependent diagnostics (e.g., load status reads) halt. Clipping detection remains active on CD_OUT, and hardware controls (ST-BY, MUTE, 1Ω) retain full functionality.

What thermal derating applies above 70 °C case temperature?

Power dissipation must be linearly derated above 70 °C case temperature at 1.16 W/°C (based on R_{th j-case} = 1 °C/W and T_j(max) = 150 °C). At 90 °C case, max allowable P_diss drops to 62.8 W - corresponding to ~2×52 W output into 2 Ω at 10 % THD. Thermal warning (TW) flag asserts at 150 °C junction.

TDA7575BPDTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: PowerSO-36 Exposed Top Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Class AB

Output Type:: 1-Channel (Mono) or 2-Channel (Stereo)

Max Output Power x Channels @ Load:: 150W x 1 @ 1Ohm; 75W x 2 @ 2Ohm

Voltage - Supply:: 8V ~ 18V

Features:: Differential Inputs, I2C, Mute, Short-Circuit and Thermal Protection, Standby

Mounting Type:: Surface Mount

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PowerSO-36

TDA7575BPDTR FAQ

1.How can I place an order for TDA7575BPDTR through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7575BPDTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TDA7575BPDTR reliable?

The price and inventory of TDA7575BPDTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7575BPDTR is usually 5 days.

3.What payment methods are accepted for TDA7575BPDTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7575BPDTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7575BPDTR?

TDA7575BPDTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7575BPDTR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TDA7575BPDTR?

For technical support, including TDA7575BPDTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7575BPDTR requirements.

6.How does Aetrix verify that TDA7575BPDTR is sourced from the original manufacturer or authorized distributors?

All TDA7575BPDTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA7575BPDTR meets industry standards.

7.What is the process for return or replacement of TDA7575BPDTR?

All TDA7575BPDTR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7575BPDTR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TDA7575BPDTR part is unused and in its original packaging.

Return procedure for TDA7575BPDTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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