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

STMicroelectronics TDA7575BPD

Name: TDA7575BPD
Brand: STMicroelectronics
SKU: TDA7575BPD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7575BPD

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: PowerSO-36 Exposed Top Pad

Datasheet:: TDA7575BPD.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:2,167

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Product details

Overview

TDA7575BPD from STMicroelectronics is a dual-channel Class AB MOSFET audio power amplifier designed for automotive head units, delivering 2×75 W into 2 Ω or 150 W in single-channel BTL mode at 14.4 V, with integrated I²C diagnostics, 1 Ω load capability, and full fault protection including DC offset detection and dual short-circuit monitoring.

For engineers reviewing the TDA7575BPD datasheet, TDA7575BPD pinout, TDA7575BPD application, or TDA7575BPD equivalent, key selection considerations include its PowerSO36 (slug-up) thermal package, differential input architecture, programmable clipping threshold (2 % / 10 %), I²C address configurability (4 options), and dual-mode operation (standard bridge vs. high-efficiency).

Technical Context

The TDA7575BPD implements a DMOS-based dual-bridge output stage with multipower BCD process technology, enabling high efficiency and low distortion (<0.03 % THD at 1–12 W, 1 kHz). Its diagnostic subsystem operates independently per channel using dedicated AC/DC load detection circuits and configurable I²C registers.

It supports three operational modes: dual-channel stereo (OUT1+/−, OUT2+/−), mono BTL (parallel outputs into 1 Ω), and line-driver mode with enhanced open-load sensitivity (400 Ω detection threshold). Control logic integrates standby/mute pins and I²C enable/disable functionality without functional overlap.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	2×75 W @ 2 Ω, 14.4 V, 10 % THD - enables high-SPL speaker drive in compact automotive enclosures
THD+N	0.02 % @ 1–30 W, 1 Ω, 1 kHz - ensures clean audio reproduction under demanding low-impedance loads
I²C Interface	4 selectable addresses, 400 kHz max clock - allows daisy-chaining multiple amplifiers on shared bus without arbitration conflict
Load Detection	Short-circuit threshold: ≤0.5 Ω; Open-load threshold: ≥130 Ω - enables robust speaker wiring validation during startup and runtime
Thermal Protection	Intervention at 170 °C junction, warning at 150 °C - provides fail-safe shutdown before package damage in sealed dash environments
Supply Range	8–18 V operating, 28 V absolute max - accommodates automotive battery transients (load dump, cold crank)
Standby Current	2–10 µA - meets OEM requirements for ultra-low quiescent consumption in always-on infotainment systems

Pinout & Package

Package: PowerSO36 (slug-up), thermally enhanced surface-mount package with exposed metal tab for direct heatsink attachment and <1 °C/W junction-to-case thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
OUT1+, OUT1− OUT2+, OUT2−	Dual bridge output terminals	Drive left/right speakers in stereo; paralleled for 150 W mono BTL into 1 Ω
IN1+, IN1− IN2+, IN2−	Differential audio inputs	Reject common-mode noise from vehicle EMI sources; support ±1 Vrms input range
ST-BY/HE	Mode-selectable standby control	Low = standby (2 µA); 3.5–5 V = standard bridge; 7–18 V = high-efficiency mode
MUTE	Hardware mute input	0–1.5 V = mute (80 dB attenuation); 3.5–18 V = play - independent of I²C state
I2C-EN	I²C bus enable/disable	0–1.5 V = disable I²C (use ST-BY/MUTE only); ≥2.5 V = enable full diagnostic interface
CD_OUT	Clipping detector output	Open-drain active-low signal; asserts when THD exceeds programmed threshold (2 % or 10 %)
1Ω	Single-channel configuration enable	>2.5 V = parallel outputs for 150 W mono; ≤1.5 V = dual-channel operation
SVR	Supply voltage rejection reference	Internal node used to monitor supply ripple impact on output; not user-connected
PW_GND, SGND	Power and signal ground returns	Separated grounds minimize ground-loop noise; PW_GND carries high-current return paths
TAB	Exposed thermal pad	Must be soldered to PCB copper pour for thermal conduction; electrically connected to VS

Key Features

Feature	Design Value
Dual independent short-circuit protections	Per-channel current sensing with fast response (≤100 ms) prevents latch-up during speaker wire faults
Programmable clipping detection	Selectable 2 % or 10 % THD threshold via I²C register; CD_OUT pin provides real-time hardware alert
Turn-on diagnostic sequence	Validates speaker continuity, open/short conditions, and DC offset before enabling output stage
1 Ω single-channel driving capability	Enables high-power subwoofer drive without external bridging circuitry; maintains thermal safety up to 150 W
Full I²C diagnostic reporting	Real-time status of load impedance, clipping, overtemperature, and fault history accessible via 8-bit register map

Applications

Automotive Head Unit

Aftermarket Stereo Receiver

Use Scenario: Integrated 4-channel amplifier in OEM dashboard radio with digital signal processing and CAN-linked UI.

IC Role / Device Role / Timing Role: Primary audio output stage with I²C-controlled gain, mute, and diagnostics; synchronized to system boot sequence.

Use Value: Eliminates need for external fault monitoring ICs; reduces BOM count by consolidating protection, diagnostics, and power delivery.

Use Scenario: Compact 2-DIN aftermarket receiver supporting Bluetooth streaming and USB playback.

IC Role / Device Role / Timing Role: Dual-bridge amplifier with hardware mute for seamless source switching and thermal-aware volume ramping.

Use Value: Enables silent startup and shutdown via ST-BY/HE pin; 1 Ω capability supports high-excursion mid-bass drivers without external bridging.

High-Efficiency Infotainment System

Diagnostic-Enabled Audio Module

Use Scenario: Low-power telematics platform requiring <50 mW standby consumption and thermal resilience.

IC Role / Device Role / Timing Role: High-efficiency (HE) mode amplifier with 2 µA standby current and 150 °C thermal warning flag.

Use Value: Extends module lifetime in confined spaces; reduces heatsink size by 40 % versus conventional Class AB solutions.

Use Scenario: Serviceable audio board in commercial fleet vehicles with remote diagnostic access.

IC Role / Device Role / Timing Role: I²C-diagnostic hub reporting speaker faults, clipping events, and temperature trends to central ECU.

Use Value: Enables predictive maintenance alerts; eliminates manual speaker continuity checks during roadside service.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7560	Lower max output (2×45 W @ 4 Ω); no 1 Ω capability; fixed 26 dB gain; no I²C diagnostics	Suitable for cost-sensitive entry-level radios without diagnostic requirements	Select when thermal budget permits larger heatsink and diagnostics are handled externally
TPA5560DAP	Class D topology; higher efficiency (>90 %); 2×60 W @ 4 Ω; no integrated DC offset detection or turn-on diagnostics	Preferred for battery-powered portable audio or hybrid systems needing minimal heat dissipation	Choose for extended battery life in mobile applications where EMI filtering overhead is acceptable

Compared with TDA7575BPD, TDA7560 lacks I²C diagnostics and 1 Ω drive, limiting system-level fault visibility; TPA5560DAP trades analog precision and built-in protection for switching efficiency, requiring external LC filters and separate fault monitoring.

Availability

TDA7575BPD is available at Aetrix Electronics and suitable for automotive infotainment systems, aftermarket stereo receivers, and diagnostic-enabled audio modules requiring stable component supply, long-lifecycle support, and AEC-Q100-aligned thermal reliability.

Supply support for TDA7575BPD 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 specializing in automotive-grade analog and power ICs, with broad expertise in high-reliability audio, power management, and microcontroller solutions.

The TDA7575BPD belongs to ST's TDA7xxx automotive audio amplifier family, engineered specifically for head unit integration with emphasis on thermal robustness, diagnostic transparency, and simplified mechanical design in space-constrained dashboards.

FAQ

What is the maximum continuous output power per channel into 4 Ω at 14.4 V?

The TDA7575BPD delivers 28 W per channel into 4 Ω at 14.4 V with 1 % THD, and up to 40 W with 10 % THD. This is measured under standard test conditions (f = 1 kHz, Tamb = 25 °C) and reflects true RMS power capability without burst or peak-only ratings.

Can the TDA7575BPD drive a 1 Ω load in dual-channel mode?

No - the 1 Ω capability applies only in single-channel (BTL) configuration, enabled by asserting the 1Ω pin above 2.5 V to parallel both bridges. In dual-channel mode, minimum safe load is 2 Ω per channel to prevent thermal overload and ensure SOA compliance.

How does the I²C diagnostic interface behave when disabled?

When I²C-EN is pulled low (≤1.5 V), the I²C bus is fully disabled and all registers become inaccessible. The CD_OUT pin then functions as a standalone clipping indicator, asserting low when THD exceeds the factory-set threshold (2 % default), independent of software control.

Is the PowerSO36 (slug-up) package RoHS and REACH compliant?

Yes - the TDA7575BPD PowerSO36 package meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free terminations and halogen-free molding compound, as confirmed in STMicroelectronics' official product change notifications and material declarations.

TDA7575BPD Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: PowerSO-36 Exposed Top Pad

Packaging:: Tube

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

TDA7575BPD FAQ

1.How can I place an order for TDA7575BPD through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7575BPD 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 TDA7575BPD reliable?

The price and inventory of TDA7575BPD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7575BPD is usually 5 days.

3.What payment methods are accepted for TDA7575BPD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7575BPD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7575BPD?

TDA7575BPD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7575BPD 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 TDA7575BPD?

For technical support, including TDA7575BPD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7575BPD requirements.

6.How does Aetrix verify that TDA7575BPD is sourced from the original manufacturer or authorized distributors?

All TDA7575BPD 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 TDA7575BPD meets industry standards.

7.What is the process for return or replacement of TDA7575BPD?

All TDA7575BPD units undergo pre-shipment inspection (PSI). If there is an issue with TDA7575BPD, 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 TDA7575BPD part is unused and in its original packaging.

Return procedure for TDA7575BPD:

1.Submit a request within 90 days.

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

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