My Inquiry
My Account
STMicroelectronics TDA7577LVPD
- Part No.:
- TDA7577LVPD
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Amplifiers
- Package:
- PowerSO-36 Exposed Top Pad
- Datasheet:
-
TDA7577LVPD.pdf
- Description:
- IC AMP AB STEREO 45W POWERSO-36
- Quantity:
- Payment:
- Shipping:
Inventory:2,423
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TDA7577LVPD from STMicroelectronics is a dual-channel Class SB MOSFET audio power amplifier designed for automotive head units, delivering 2 × 75 W into 2 Ω loads and supporting 6 V start-stop operation. It integrates full I²C diagnostics (4 address options), differential inputs, ST-BY/MUTE control, clipping detection with selectable 2 %/10 % thresholds, and robust 1 Ω single-channel capability (84 W undistorted).
For engineers reviewing the TDA7577LVPD datasheet, TDA7577LVPD pinout, TDA7577LVPD application, or TDA7577LVPD equivalent, this device serves as a high-efficiency, fault-aware audio amplifier for modern car radios requiring low-voltage resilience, real-time speaker diagnostics, and thermal-safe high-power output in PowerSO-36 packaging.
Technical Context
The TDA7577LVPD implements a proprietary Class SB architecture combining high efficiency (up to 50 % less dissipation vs. Class AB) with analog fidelity, enabled by DMOS output transistors and adaptive biasing. Its dual-bridge topology supports independent channel operation with gain settings of 16 dB or 26 dB, and operates across 6–18 V supply range - critical for engine cranking and start-stop systems.
Diagnostics are implemented via integrated AC/DC load monitoring, two independent short-circuit protections, DC offset detection, and I²C-reportable fault states (open/short load, clipping, thermal warning). Legacy mode allows full functionality without I²C using only ST-BY and MUTE pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | 2 × 75 W @ 2 Ω, 10 % THD; 1 × 150 W @ 1 Ω (parallel bridge); enables high-SPL cabin audio without external heatsinking. |
| Supply Voltage Range | 6–18 V (min 6 V supports OEM start-stop battery transitions; max 18 V covers load-dump immunity). |
| THD+N | 0.04 % typ. @ 1–12 W, 1 kHz (STD mode); ensures clean mid-bass reproduction in OEM-grade infotainment. |
| I²C Interface | 4 configurable slave addresses; enables daisy-chaining multiple amplifiers on one bus for multi-zone audio systems. |
| Diagnostic Coverage | Detects open/short load, clipping (2 %/10 % threshold), DC offset, and thermal faults - all reportable via I²C register reads. |
| Package Thermal Rth(j-case) | 1 °C/W (PowerSO-36 slug-up); allows >80 W continuous dissipation with moderate PCB copper area and airflow. |
| Standby Current | 1 μA typ.; meets automotive <10 μA quiescent requirement for always-on audio subsystems. |
Pinout & Package
Package: PowerSO-36 (slug-up) - thermally enhanced exposed die pad mounted to PCB ground plane for optimal heat transfer in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Accepts 6–18 V; powers internal regulators and DMOS stage; requires local 100 nF + 10 μF decoupling. |
| GND | Ground reference | Common return for power, signal, and diagnostics; connected directly to thermal slug for low-impedance path. |
| OUT1+/OUT1− | Dual-bridge channel 1 outputs | Full H-bridge terminals; drive 2 Ω–4 Ω speakers; support 1 Ω parallel mode when 1Ω pin >2.5 V. |
| OUT2+/OUT2− | Dual-bridge channel 2 outputs | Independent second H-bridge; identical specs to OUT1; enables stereo or bi-amp configurations. |
| ST-BY | Standby control input | Logic-level pin: 0–1.2 V = standby (90 dB attenuation); 2.6–18 V = active; supports Hi-Eff mode at >7 V. |
| MUTE | Mute control input | 0–1 V = mute (80 dB attenuation); 2.6–18 V = play; independent of ST-BY for flexible sequencing. |
| CLIP | Clipping detector output | Open-drain active-low signal; asserts when THD exceeds selected threshold (2 % or 10 %). |
| SCL/SDA | I²C clock/data | Support standard-mode (100 kHz) and fast-mode (400 kHz); tolerate 0–6 V; require pull-ups to VCC. |
| 1Ω | 1 Ω mode enable | High (>2.5 V) configures parallel bridge for single-channel 150 W; low (<1.5 V) enables dual-channel mode. |
| IN1+/IN1−, IN2+/IN2− | Differential audio inputs | High-CMRR (70 dB typ.) inputs reject noise from vehicle harnesses; support 1 Vrms common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| Class SB Efficiency | Reduces power dissipation up to 50 % vs. Class AB at same output power - lowers thermal design burden and improves reliability. |
| Start-Stop Compatibility | Stable operation down to 6 V supply enables seamless audio playback during engine restart cycles without dropout or reset. |
| Integrated Diagnostics | Real-time speaker health monitoring (open/short, clipping, DC offset) eliminates need for external sense resistors or microcontroller ADCs. |
| Dual Gain Modes | Selectable 16 dB / 26 dB voltage gain allows optimization for line-level (head unit) or preamp-level (DSP) input sources. |
| Robust Fault Protection | Two independent short-circuit detectors per channel plus thermal foldback prevent latch-up and catastrophic failure under miswiring. |
Applications
| Automotive Head Unit Amplifier | OEM Infotainment Audio System |
|---|---|
|
Use Scenario: Integrated 4-channel amplifier in factory-installed car radio with digital signal processing and Bluetooth streaming. IC Role / Device Role / Timing Role: Final-stage dual-bridge power driver delivering 75 W/channel to front/rear speakers; synchronized mute/st-by transitions with system boot sequence. Use Value: Eliminates discrete protection circuitry and external diagnostics, reducing BOM count by ≥7 components while meeting ISO 16750-2 cranking requirements. |
Use Scenario: Multi-zone audio platform supporting front cabin, rear seat, and subwoofer outputs from a single SoC. IC Role / Device Role / Timing Role: Primary stereo amplifier with I²C-configurable gain and diagnostics; communicates speaker status to central MCU over shared bus. Use Value: Enables predictive maintenance alerts (e.g., "left front speaker impedance drift detected") without adding sensor hardware. |
| Start-Stop Optimized Audio Module | Compact High-Power Aftermarket Radio |
|
Use Scenario: Low-profile amplifier board in hybrid vehicle head unit where battery voltage drops to 6.2 V during engine stop. IC Role / Device Role / Timing Role: Maintains uninterrupted audio playback during 500 ms cranking events; uses internal SVR to stabilize bias during transient dips. Use Value: Avoids audible pop/cutout during start-stop cycles - satisfies OEM acoustic quality KPIs (e.g., BMW G12 spec). |
Use Scenario: Plug-and-play replacement amplifier for legacy DIN radios needing higher output without chassis modification. IC Role / Device Role / Timing Role: Drop-in dual-bridge upgrade replacing TDA7388; leverages existing Flexiwatt27 footprint compatibility via PowerSO36 adapter layout. Use Value: Delivers +30 % more RMS power into 4 Ω speakers (28 W → 36 W) while maintaining identical PCB keep-out and thermal interface. |
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 |
|---|---|---|---|
| TDA7388 | Class AB, 4 × 45 W @ 4 Ω, no I²C, 8 V min supply, Flexiwatt27 package. | Lacks diagnostics, start-stop support, and 1 Ω capability; lower efficiency increases thermal load. | Choose for cost-sensitive legacy designs where diagnostics and low-voltage operation are not required. |
| TDA7851 | Class D, 4 × 70 W @ 2 Ω, I²C diagnostics, 6 V min, PowerSO36, but no 1 Ω mode. | Higher efficiency than TDA7577LVPD but lacks single-channel 150 W capability and has stricter EMI filtering needs. | Prefer for multi-speaker systems prioritizing efficiency and footprint over peak mono power. |
Compared with TDA7388, TDA7577LVPD adds I²C diagnostics, 6 V operation, and 1 Ω capability at modest efficiency gain; compared with TDA7851, it trades Class D efficiency for proven Class SB linearity and higher single-channel output - making it optimal for OEM head units demanding both fidelity and fault awareness.
Availability
TDA7577LVPD is available at Aetrix Electronics and suitable for automotive infotainment systems, start-stop compatible head units, and high-fidelity OEM audio modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TDA7577LVPD 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 qualification expertise.
The TDA7577LVPD belongs to ST's TDA7xxx automotive audio amplifier family, engineered specifically for OEM head units requiring high output power, diagnostic intelligence, and resilience to harsh automotive electrical environments.
FAQ
What is the minimum supply voltage for reliable operation?
The TDA7577LVPD operates reliably down to 6 V, enabling uninterrupted audio playback during engine cranking and start-stop cycles. Below 6 V, the device enters undervoltage lockout; startup is guaranteed above 6.2 V with proper decoupling. This meets major OEM specifications including VW TL 81300 and Ford WSS-M99P1111-A.
How does the I²C diagnostic reporting work in practice?
The TDA7577LVPD exposes 16 diagnostic registers via I²C, including per-channel short/open load flags, clipping status, DC offset magnitude, and thermal warnings. Each fault triggers an interrupt on the CLIP pin, and register reads return precise condition codes - e.g., bit 3 of REG 0x05 indicates left-channel short-to-ground detection during turn-on diagnostic.
Can the TDA7577LVPD drive 1 Ω loads safely?
Yes - when the 1Ω pin is driven >2.5 V, the device configures both bridges in parallel to deliver 150 W into 1 Ω with 3 % THD. This mode activates dual short-circuit protection and thermal derating curves; sustained operation requires ≥100 cm² 2-oz copper pour and forced airflow per ST's AN4521 layout guidelines.
Is legacy (non-I²C) operation fully functional?
Yes - with I²C pins held below 1.5 V, the TDA7577LVPD reverts to legacy mode: ST-BY and MUTE pins control operation, clipping is signaled via the CLIP pin, and diagnostics are limited to basic fault flagging (no register access). All audio performance specs and protection features remain fully active.
TDA7577LVPD 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:
- 2-Channel (Stereo)
- Max Output Power x Channels @ Load:
- 45W x 2 @ 4Ohm
- Voltage - Supply:
- 6V ~ 18V
- Features:
- Mute, Short-Circuit Protection, Standby
- Mounting Type:
- Surface Mount
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- PowerSO-36
TDA7577LVPD FAQ
1.How can I place an order for TDA7577LVPD through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA7577LVPD 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 TDA7577LVPD reliable?
The price and inventory of TDA7577LVPD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7577LVPD is usually 5 days.
3.What payment methods are accepted for TDA7577LVPD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7577LVPD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA7577LVPD?
TDA7577LVPD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA7577LVPD 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 TDA7577LVPD?
For technical support, including TDA7577LVPD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7577LVPD requirements.
6.How does Aetrix verify that TDA7577LVPD is sourced from the original manufacturer or authorized distributors?
All TDA7577LVPD 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 TDA7577LVPD meets industry standards.
7.What is the process for return or replacement of TDA7577LVPD?
All TDA7577LVPD units undergo pre-shipment inspection (PSI). If there is an issue with TDA7577LVPD, 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 TDA7577LVPD part is unused and in its original packaging.
Return procedure for TDA7577LVPD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TDA7577LVPD Tags
-Exposed-Pad.jpg)
-
TS34119CS RLG
Taiwan Semiconductor Corporation
-
LM386MX-1/NOPB
Texas Instruments
-
TPA711DGNR
Texas Instruments
-
LM386N-4/NOPB
Texas Instruments
-
TS4990IST
STMicroelectronics
-
PAM8302AASCR
Diodes Incorporated
-
TPA6130A2RTJR
Texas Instruments
-
TPA6111A2DGNR
Texas Instruments
-
LM4861MX/NOPB
Texas Instruments
-
LM386M-1/NOPB
Texas Instruments
-
NCS2211DR2G
onsemi
-
IS31AP2005-DLS2-TR
Lumissil Microsystems
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
