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

STMicroelectronics STA50613TR

Name: STA50613TR
Brand: STMicroelectronics
SKU: STA50613TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STA50613TR

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: PowerSO-36 Exposed Top Pad

Datasheet:: STA50613TR.pdf

Description:: IC AMP D MONO/STER 120W PWRSO-36

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STA50613TR from STMicroelectronics is a monolithic quad half-bridge power stage in Multipower BCD technology, configured as dual H-bridge or reconfigurable single BTL bridge delivering up to 80W @ 36V/8Ω or 120W peak @ 32V/4Ω. It features 200mΩ R_DS(on) complementary DMOS outputs, CMOS-compatible logic inputs, thermal warning (TH_WAR), fault reporting (FAULT), and under-voltage lockout - designed for stereo DDX™ all-digital audio amplifiers.

For engineers reviewing the STA50613TR datasheet, STA50613TR pinout, STA50613TR application, or STA50613TR equivalent, this device supports dual-BTL, single-BTL, and binary half-bridge modes with configurable logic thresholds, dead-time control, and integrated protection for high-efficiency Class-D audio output stages.

Technical Context

The STA50613TR implements dual independent H-bridge channels with configurable operation modes: dual BTL (stereo), single BTL (mono, doubled current via CONFIG pin tie to V_DD), or binary half-bridge. Each channel accepts two logic-level inputs (INxA/INxB) referenced to VL (2.7–5.0V), enabling DDX® ternary modulation or binary PWM decoding.

Protection architecture includes thermal shutdown at 150°C (with 25°C hysteresis), thermal warning at 130°C (open-drain TH_WAR), short-circuit detection with 4–8A current limiting, and undervoltage lockout at 7V. All power MOSFETs are disabled during PWRDN or TRI-STATE assertion, forcing Hi-Z output state.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(on)	200 mΩ typical - enables low conduction loss in high-current audio output stage
Output Power	60 + 60W @ 32V/8Ω (dual BTL), 80W @ 36V/8Ω (single BTL) - meets THD = 10% spec
Supply Voltage	10–36 V DC on VCC pins - supports wide-range audio supply rails with 40V absolute max rating
Logic Threshold	V_IN-H = V_L/2 + 300mV, V_IN-L = V_L/2 − 300mV - ensures noise-immune interface with variable VL reference
Thermal Warning	Active-low TH_WAR at 130°C junction - provides early overtemperature alert before shutdown
Dead Time	10–20 ns static / 50 ns dynamic - prevents shoot-through while maintaining fast switching
Package Thermal R_θJC	1.5 °C/W - enables high-power dissipation (50W at T_case = 70°C) with external heatsink

Pinout & Package

STA50613TR uses PowerSO36 package with exposed thermal slug (top-side) for direct heatsink mounting. All duplicate power, ground, and output pins must be connected in parallel for proper current sharing and thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1, 19, 20, 31, 32	GND-SUB, GND-Clean, GND-Reg, IN2A, IN2B	Substrate ground, logic ground isolation, regulator reference, and channel 2 inputs - require separate routing to minimize noise coupling
2–3, 8–9, 10–11, 16–17	OUT2B, OUT2A, OUT1B, OUT1A	Four half-bridge outputs - paired per channel (e.g., OUT1A/OUT1B form H-bridge); must be paralleled in single-BTL mode
4, 7, 12, 15, 36	VCC2B, VCC2A, VCC1B, VCC1A, VCCSign	Dedicated positive supplies per half-bridge quadrant - decoupling required at each pin to suppress switching noise
5–6, 13–14, 33–34	GND2B, GND2A, GND1B, GND1A, VSS	Negative supply returns - low-inductance connection essential for EMI control and gate drive stability
21–22, 23, 24–28, 29–30	V_DD, VL, CONFIG, PWRDN, TRI-STATE, FAULT, TH_WAR, IN1A, IN1B	5V regulator output, logic reference voltage, configuration select, standby control, Hi-Z enable, fault indicator, thermal warning, and channel 1 inputs - define operational mode and safety behavior

Key Features

Feature	Design Value
Dual configurable H-bridge topology	Supports stereo dual-BTL, mono single-BTL (via CONFIG pin), or binary half-bridge - enables flexible system-level power scaling
Integrated protection suite	Thermal warning (130°C), shutdown (150°C), short-circuit current limit (4–8A), and UVLO (7V) - eliminates need for external fault management circuitry
Low R_DS(on) DMOS outputs	200 mΩ typical per FET - reduces conduction loss and improves efficiency in high-current audio applications
CMOS-compatible logic interface	V_L-referenced inputs with ±300mV hysteresis - ensures robust timing margin against supply and layout noise
Programmable dead time	10–20 ns static / 50 ns dynamic - balances shoot-through prevention with minimal distortion in high-frequency PWM

Applications

Home Audio Amplifiers

Automotive Infotainment Systems

Use Scenario: Stereo Class-D amplifier module delivering 60W+60W into 8Ω speakers in compact AV receivers.

IC Role / Device Role / Timing Role: Final power stage converting DDX® or binary PWM signals into amplified analog audio output.

Use Value: Enables high-efficiency, low-heat operation without bulky heatsinks while meeting THD ≤10% at full power.

Use Scenario: Rear-seat entertainment amplifier powering 4Ω speakers in vehicle cabin with limited space and thermal budget.

IC Role / Device Role / Timing Role: Dual-channel H-bridge driver supporting both stereo and bridged mono configurations via CONFIG pin.

Use Value: Delivers 120W peak into 4Ω at 32V supply - sufficient for transient bass response without rail collapse.

Professional Audio DSP Amplifiers

Smart Speaker Reference Designs

Use Scenario: High-fidelity active speaker with digital signal processor feeding DDX®-encoded streams to power stage.

IC Role / Device Role / Timing Role: Output stage synchronized to DSP-generated ternary modulation clock with precise dead-time control.

Use Value: Maintains <0.1% THD+N across 20Hz–20kHz due to matched R_DS(on) (95% matching) and low pulse-width distortion.

Use Scenario: Compact smart speaker requiring integrated thermal management and fault signaling for cloud-connected firmware updates.

IC Role / Device Role / Timing Role: Power controller with open-drain FAULT and TH_WAR outputs interfacing directly to MCU GPIOs.

Use Value: Enables autonomous thermal derating and graceful shutdown via real-time junction temperature monitoring.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad half-bridge audio power stage applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TAS5630PHDR	Higher R_DS(on) (300mΩ), no thermal warning pin, fixed 32V max V_CC	Lacks TH_WAR and CONFIG-based reconfiguration - requires external thermal monitoring and fixed topology	Prefer when board space is constrained and thermal headroom is ample; not suitable for adaptive BTL operation.
IRS2092SPBF	Discrete gate driver + external MOSFETs; no integrated protection or regulation	Requires external current sensing, thermal sensor, and 5V regulator - increases BOM count and layout complexity	Choose only when maximum flexibility in MOSFET selection and custom protection tuning is required.

Compared with TAS5630PHDR and IRS2092SPBF, STA50613TR integrates thermal warning, reconfigurable topology, and matched low-R_DS(on) outputs - reducing system-level design effort and component count for mid-power Class-D amplifiers.

Availability

STA50613TR is available at Aetrix Electronics and suitable for home audio amplifiers, automotive infotainment systems, and professional DSP amplifier modules requiring stable component supply and long-term industrial availability.

Supply support for STA50613TR 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 power management, analog, microcontrollers, and audio ICs for industrial, automotive, and consumer markets.

STA50613TR belongs to ST's Class-D audio power stage product line, engineered specifically for high-efficiency, low-THD digital audio amplification in space-constrained and thermally sensitive applications.

FAQ

What is the function of the CONFIG pin on STA50613TR?

The CONFIG pin (Pin 24) selects operating mode: grounded for standard dual-BTL stereo operation; tied to V_DD (Pins 21/22) to configure the device as a single high-current BTL bridge (OUT1A=OUT1B, OUT2A=OUT2B). This doubles output current capability for mono applications like subwoofers or PA systems.

How does the thermal warning (TH_WAR) pin behave under overload conditions?

TH_WAR is an open-drain output that pulls low when junction temperature reaches 130°C, providing early warning before thermal shutdown at 150°C. It requires an external pull-up resistor and can trigger MCU interrupts or fan control - enabling proactive thermal management without system interruption.

Can STA50613TR operate with a 5V logic supply while using 32V for VCC?

Yes. The VL pin (Pin 23) sets logic threshold voltage (2.7–5.0V), independent of VCC (10–36V). With VL = 3.3V, input high level is ≥2.0V and low level ≤1.0V - ensuring reliable interface with 3.3V MCUs even when VCC = 32V, provided proper isolation between logic and power grounds.

What is the minimum recommended output filter inductance for 8Ω loads?

Per Figure 1, the recommended output filter uses 22µH inductors (L18/L19) with 100nF–1µF film/ceramic capacitors for 8Ω loads. Lower inductance risks excessive switching current ripple and EMI; higher values increase size and reduce bandwidth - 22µH balances THD+N performance and physical footprint.

STA50613TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: PowerSO-36 Exposed Top Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Class D

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

Max Output Power x Channels @ Load:: 120W x 1 @ 4Ohm; 60W x 2 @ 8Ohm

Voltage - Supply:: 10V ~ 36V

Features:: Digital Inputs, Short-Circuit and Thermal Protection, Standby

Mounting Type:: Surface Mount

Operating Temperature:: -40°C ~ 90°C (TA)

Grade:: -

Qualification:: -

Supplier Device Package:: PowerSO-36

STA50613TR FAQ

1.How can I place an order for STA50613TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STA50613TR 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 STA50613TR reliable?

The price and inventory of STA50613TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA50613TR is usually 5 days.

3.What payment methods are accepted for STA50613TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA50613TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STA50613TR?

STA50613TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STA50613TR 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 STA50613TR?

For technical support, including STA50613TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA50613TR requirements.

6.How does Aetrix verify that STA50613TR is sourced from the original manufacturer or authorized distributors?

All STA50613TR 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 STA50613TR meets industry standards.

7.What is the process for return or replacement of STA50613TR?

All STA50613TR units undergo pre-shipment inspection (PSI). If there is an issue with STA50613TR, 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 STA50613TR part is unused and in its original packaging.

Return procedure for STA50613TR:

1.Submit a request within 90 days.

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

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