STMicroelectronics TDA2006H

Overview

TDA2006H from STMicroelectronics is a monolithic 12W Class AB audio power amplifier in Pentawatt package, designed for low-frequency amplification with ±12V supply, 4Ω/8Ω load support, <0.2% THD+N at 1kHz, and integrated short-circuit and thermal shutdown protection. It delivers 12W into 4Ω and 8W into 8Ω at d = 10%, serving as the output stage in compact stereo amplifiers, active speakers, and consumer audio systems.

For engineers reviewing the TDA2006H datasheet, TDA2006H pinout, TDA2006H application, or TDA2006H equivalent, key selection criteria include output power vs. supply voltage dependency, closed-loop gain stability (29.5–30.5 dB), input offset voltage (±8 mV), thermal resistance junction-to-case (3 °C/W), and safe operating area protection behavior under short-circuit conditions.

Technical Context

The TDA2006H implements a patented peak power limiting architecture-not simple current limiting-where output transistor current is dynamically constrained as a function of V_CE(sat), ensuring operation remains within the safe operating area during AC output-to-ground faults. Its dual protection includes automatic dissipation control and a thermal shutdown threshold at 145 °C.

It operates in split-supply (±6V to ±15V) or single-supply configurations, supports open-loop gain of 75 dB and closed-loop gain of 30 dB, and features 20Hz–100kHz bandwidth (–3 dB) with 0.5–5 MΩ input resistance. Input noise is 3–10 µV (e_N) and 80–200 pA (i_N) over 22Hz–22kHz.

Key Specifications

Pinout & Package

Pentawatt (5-pin, single-in-line) package with integral heat slug; requires mechanical mounting to heatsink via metal tab (no electrical isolation needed in single-supply mode).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar audio power amplifier applications.

Compared with TDA2030A and LM1875, the TDA2006H offers superior integration of protection (patented peak power limiting + thermal shutdown) in a compact Pentawatt package, while maintaining lower quiescent current than TDA2030A and eliminating external protection complexity required by LM1875.

Availability

TDA2006H is available at Aetrix Electronics and suitable for compact stereo amplifiers, active bookshelf speakers, portable PA systems, and legacy audio module replacements requiring stable component supply and long-lifecycle availability.

Supply support for TDA2006H 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TDA2006H belongs to ST's legacy audio power amplifier product line, engineered specifically for cost-sensitive, space-constrained audio output stages requiring robust fault tolerance and minimal external components.

FAQ

Can TDA2006H operate from a single 24V supply?

Yes - the TDA2006H supports single-supply operation (e.g., 24V with ground reference) using the configuration shown in Figure 15 of its datasheet. A virtual ground at half-supply is created via resistive divider and bypassed with capacitors to maintain stability and common-mode rejection. Output coupling capacitor is mandatory in this mode.

What is the minimum recommended heatsink thermal resistance for continuous 12W output?

With R_th(j-c) = 3 °C/W and maximum junction temperature of 150 °C, a heatsink with R_th(c-a) ≤ 6.2 °C/W is required at 25 °C ambient to sustain 12W output continuously. ST recommends a 60 mm aluminum extrusion heatsink (R_th ≈ 4.2 °C/W) per the dimension table on page 10 of the datasheet.

Is TDA2006H pin-compatible with TDA2003?

No - the TDA2006H uses a 5-pin Pentawatt package with pin 1 = inverting input, pin 2 = non-inverting input, pin 3 = ground, pin 4 = –V_S, pin 5 = output. The TDA2003 uses a different 5-pin layout (pin 1 = output, pin 2 = –V_S, pin 3 = ground, pin 4 = +V_S, pin 5 = input), making them electrically and mechanically incompatible.

Does TDA2006H require external compensation capacitors?

No external compensation is required for standard configurations. The device is internally compensated for unity-gain stability. However, C7 (0.22 µF) across R4 is recommended for high-frequency stability with inductive loads, and C8 sets upper bandwidth in closed-loop designs per the formula C8 = 1/(2π·B·R1) as specified in Table 1.