STMicroelectronics STA50013TR

Overview

STA50013TR from STMicroelectronics is a monolithic quad half-bridge audio power stage in Multipower BCD technology, configured as dual BTL (30+30W into 8Ω) or single BTL (60W into 4Ω), featuring 200 mΩ R_DS(on) complementary DMOS outputs, CMOS-compatible logic inputs, and integrated thermal/overvoltage/undervoltage protection.

For engineers reviewing the STA50013TR datasheet, STA50013TR pinout, STA50013TR application, or STA50013TR equivalent, this device is selected for high-efficiency digital audio amplifier output stages requiring precise dead-time control (50 ns dynamic), thermal warning (130°C open-collector output), and reconfigurable bridge topology via CONFIG pin.

Technical Context

The STA50013TR implements four independent half-bridge channels with matched P/N-channel DMOS outputs, where input thresholds scale with I_BIAS voltage (2.7–5 V range). Its logic truth table supports Hi-Z, dump, positive/negative drive modes controlled by PWRDN, TRI-STATE, and INxA/INxB inputs.

Protection circuitry includes thermal shutdown at 150°C (25°C hysteresis), overvoltage lockout at 30–40 V, undervoltage detection at 7 V, and short-circuit current limiting (3.5–8 A). The TH_WAR and FAULT pins provide open-collector status signaling referenced to V_DD.

Key Specifications

Pinout & Package

STA50013TR is housed in PowerSO-36 package with exposed thermal pad for enhanced heat dissipation (R_th(j-case) = 2.5 °C/W). Pin numbering follows standard PowerSO-36 layout with dedicated V_CC/GND pairs per half-bridge and isolated logic supply rails (V_DD, V_SS, GND-Reg, GND-Clean).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TAS5630PHPR and IRS2092SPBF, STA50013TR uniquely combines topology reconfigurability, integrated thermal warning, and Ibias-scalable logic thresholds-enabling rapid prototyping of multi-mode audio amplifiers without redesigning protection or level-shifting circuitry.

Availability

STA50013TR is available at Aetrix Electronics and suitable for home theater receivers, automotive infotainment systems, professional audio reference designs, and smart speaker modules requiring stable component supply and long-lifecycle support.

Supply support for STA50013TR 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 power management, analog, MEMS, and microcontrollers, with broad industrial and automotive qualification portfolios.

The STA500 series belongs to ST's digital audio power stage product line, engineered specifically for All-Digital High Efficiency (DDX™) amplifier architectures demanding low distortion, high power density, and integrated protection in compact form factors.

FAQ

What is the function of the CONFIG pin on STA50013TR?

The CONFIG pin selects operating topology: grounded (0 V) enables standard dual half-bridge mode; tied to V_DD (5 V) configures the device as a single BTL bridge with doubled current capability per channel. This reconfiguration changes internal output routing but does not alter R_DS(on) or protection thresholds.

How does the TH_WAR pin behave under thermal stress?

TH_WAR is an open-collector 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 (typically 10 kΩ to 3.3 V) and remains active until temperature drops below 105°C (130°C − 25°C hysteresis).

Can STA50013TR drive 4Ω loads in dual BTL configuration?

No - dual BTL mode delivers 30+30W into 8Ω loads. For 4Ω operation, the device must be configured in single BTL mode (CONFIG = 1), enabling 60W output into 4Ω. Attempting dual BTL into 4Ω exceeds safe operating area due to doubled current demand per half-bridge.

What is the purpose of the IBIAS pin?

IBIAS sets the reference voltage for all logic input thresholds (VIN-H/VIN-L) and internal regulator references. At 3.3 V IBIAS, inputs switch at 0.8 V (low) and 1.7 V (high); scaling IBIAS linearly adjusts these thresholds, enabling interoperability with 1.8–5 V controller logic without external level shifters.