Stk412530 Datasheet

The STK412-530 is a two-channel, high-power audio amplifier IC originally manufactured by Sanyo. It belongs to a series of Class H hybrid ICs that utilize a built-in shift power supply circuit to achieve high efficiency by switching supply voltages based on input signal levels. Key Technical Specifications

The Power Source: Use a transformer rated for at least 300W with an AC dual supply of 24-36V for optimal performance. stk412530 datasheet

3. Absolute Maximum Ratings ((T_a = 25^\circ C))

| Parameter | Symbol | Rating | Unit | | :--- | :--- | :--- | :--- | | Maximum Supply Voltage | ( V_CC ) max | (\pm 45) | V | | Peak Output Current | ( I_O ) peak | 8 | A | | Power Dissipation (Each Channel) | ( P_D ) | 60 | W | | Junction Temperature | ( T_j ) | 150 | °C | | Operating Substrate Temperature | ( T_c ) | 125 | °C | The STK412-530 is a two-channel, high-power audio amplifier

6. Typical Application Circuit Highlights

Power Supply: Requires split supply ((\pm 32V) DC regulated or unregulated with adequate filtering). Use 4700µF to 10000µF per rail.
Input Capacitor: 1µF to 2.2µF film or electrolytic (non-polarized recommended).
Feedback Network: Set gain via ( R_f ) (from output to inverting input – internal) and external ( R_g ) to ground. Typical closed-loop gain: 40dB (100x).
Output RC Snubber: 0.1µF + 4.7Ω series from output to ground for stability.
Bootstrap Capacitor: 100µF between bootstrap pin and output (improves voltage swing).
Mute/Standby: TTL-compatible; mute low = mute, standby low = off.