TDA7265B

The TDA7265B is a dual, power audio amplifier IC from STMicroelectronics. It contains two independent class-AB amplifiers in one package, designed to drive loudspeakers from a single supply (typically 8–26 V). The device integrates biasing, protection, and a mute/standby control, reducing external parts and board space. It offers protection against thermal overload, short-circuit, overcurrent, and undervoltage, with short-circuit protection on outputs. The TDA7265B can deliver several watts per channel into 4–8 Ω loads (depends on supply), making it suitable for consumer audio equipment such as TVs, set-top boxes, multimedia speakers, and portable audio systems. It commonly comes in a 16-pin DIP or SO-16 package. It requires external input coupling, appropriate gain-setting circuitry, and adequate heatsinking. Always consult the latest datasheet for exact electrical characteristics, pinout, and application circuit.

Equivalent or near‐equivalent dual-25 W audio amps to ST’s TDA7265B include:
• STMicroelectronics TDA7265A/B and TDA7266A
• ST TDA7292 or TDA7294 (bridge-able 2×25 W)
• ON Semiconductor LM4780 (2×60 W)
• NXP (Philips) TEA2025B (2×10 W)
• ST TDA7377 (2×14 W) or TDA7492 (2×50 W)

Here are the key features of the TDA7265B:
- Dual audio power amplifier with Bridge-Tied Load (BTL) outputs
- 2 channels; typical output around 15 W per channel into 4 Ω (power varies with supply)
- Wide supply range suitable for automotive use (roughly 8–18 V)
- Class-AB power stage for good efficiency
- Built-in protections: thermal shutdown, short-circuit/overcurrent, undervoltage/overvoltage
- Soft-start to prevent turn-on pops
- Mute and standby control pins
- Differential inputs (and compatibility with single-ended sources)
- Suitable for car radios, home audio, and other low-voltage applications
- Low distortion and wide bandwidth for solid audio performance

TDA7265B comes in a 15‑pin Multiwatt package (15 pins). Function: it is a dual audio power amplifier (stereo) with built‑in mute/standby and protection circuitry. The pins provide the power supply and ground, two channel inputs (and associated feedback/ gain network and bypass), two channel outputs, bootstrap/decoupling connections, and mute/standby control. Typical use is as a 2‑channel power amplifier (around 20–25 W per channel into 8 Ω, depending on supply and conditions).

The TDA7265B is manufactured by STMicroelectronics. STMicroelectronics is a multinational semiconductor company (an integrated device manufacturer) headquartered in Geneva, Switzerland, that designs and produces analog, digital and mixed‑signal integrated circuits, power and audio amplifiers, microcontrollers, sensors and discrete components for consumer, automotive, industrial and telecom markets.

TDA7265B is a dual audio power amplifier. Typical application areas:
- Consumer electronics: TV sets, DVD/VCD players, set-top boxes
- Home audio: mini hi‑fi systems, soundbars, small home theater setups
- Computer/monitor audio: multimedia speakers, docking stations
- Portable/multi-room speaker systems and karaoke machines
- Educational and light industrial audio equipment needing a low-cost dual amplifier
It provides 2 x output power with BTL/dual-channel configuration suitable for compact, cost-effective stereo amplification.

The TDA7265B is supplied in an 11-lead Multiwatt (Multiwatt11) through‑hole power package — a single‑in‑line power package with integrated heatsink mounting for audio power applications.