Stk412-230 Datasheet Pdf Hot! -
The STK412-230 is a classic example of Sanyo's thick-film hybrid integrated circuits, specifically designed as a two-channel shift power supply audio power amplifier. Unlike standard monolithic ICs, these hybrid modules house multiple semiconductor dies—like power transistors and resistors—mounted side-by-side on a ceramic substrate, creating a compact yet high-performance "black box" for high-fidelity audio equipment. Technical Highlights
Shift Power Supply Architecture: The "shifter" designation refers to its ability to handle dual-rail power supplies, improving efficiency and reducing heat dissipation during varied audio loads. Stk412-230 Datasheet Pdf
- DatasheetArchive.com
- Alldatasheet.com (check for legible scans)
- ON Semiconductor website (archive section for Sanyo)
Conclusion
- PCB Layout Guide: The STK modules are sensitive to ground loops. The datasheet includes a strict PCB layout guide showing exactly where to split signal and power grounds.
- Recommended External Components: It specifies exact values for input capacitors (usually 2.2µF), feedback resistors, Zobel networks, and bootstrap caps. Guessing these can cause oscillation.
- Thermal Design: 230W generates serious heat. The datasheet provides thermal resistance calculations (θjc) to help you size your heatsink properly.
Conclusion
What Exactly is the STK412-230?
The STK412-230 is a class-AB audio power amplifier hybrid IC originally manufactured by Sanyo. It belongs to the STK41x-II series (including the 410, 420, 430), known for their high reliability and excellent sound quality. The STK412-230 is a classic example of Sanyo's
- High Power Output: The IC can deliver a maximum output power of 150W per channel into a 4-ohm load.
- Low Distortion: The STK412-230 has a low total harmonic distortion (THD) of 0.03% at 1kHz.
- Wide Operating Voltage Range: The IC can operate on a single power supply voltage ranging from 10V to 40V.
- Built-in Thermal Shutdown Circuit: The IC has a built-in thermal shutdown circuit that protects it from overheating.
- Mute Function: The STK412-230 has a mute function that allows for silent operation.
- High-Quality Audio: The IC is designed to deliver high-quality audio with low noise and distortion.
- Supply voltage: 35V
- Peak output current: 4A
- Junction temperature: 150°C