STA543SA

$1.22

Description：IC AMP AB 3 CHAN 24W 19CLIPWATT
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:67dbcfbae698 Category: Audio Amplifiers Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC AMP AB 3 CHAN 24W 19CLIPWATT
Series：-
Mfr：STMicroelectronics
Package：Tube
Type：Class AB
Output Type：3-Channel
Max Output Power x Channels @ Load：24W x 1 @ 4Ohm; 7W x 2 @ 4Ohm
Voltage - Supply：8V ~ 18V
Features：Short-Circuit and Thermal Protection, Standby, Volume Control
Mounting Type：Through Hole
Supplier Device Package：19-Clipwatt
Package / Case：Clipwatt-19 (Vertical, Bent and Staggered Leads)
Operating Temperature：0°C ~ 70°C (TA)
Grade：-
Qualification：-

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STA543SA

Overview

The STA543SA is a Class AB triple audio amplifier in Clipwatt-19 package. It provides 24W x 1 + 7W x 2 output power at VCC = 15V, RL = 4Ω, THD = 10%. Supply voltage range is 8V to 18V. Quiescent current is typically 150mA. Gain is internally fixed at 20dB (SE) and 26dB (BTL). Operating temperature is 0°C to 70°C.

Feature Summary

Triple channel configuration with dedicated linear DC volume control for each channel
Rail-to-rail output swing without bootstrap capacitors or Boucherot cells
Integrated diagnostic facilities including clip detection and thermal shutdown proximity signaling
Silent turn-on/off and stand-by function with CMOS compatibility

Applications

2.1 channel audio systems using two single-ended channels and one bridge-tied load channel
High-quality sound applications requiring minimal external component count
Audio designs needing integrated short circuit and thermal protection

Procurement Notes

Verify the specific part number against official STMicroelectronics documentation before integration. Confirm that the Clipwatt-19 package dimensions match your PCB layout requirements. Ensure supply voltage and thermal management align with the absolute maximum ratings specified in the datasheet. Check for any preliminary data status updates.

Selection Notes

Select this device when a three-channel solution is required within a single IC. The internal gain settings simplify circuit design by removing external feedback resistors. Consider the thermal resistance characteristics for heatsink sizing based on the expected power dissipation and ambient temperature conditions.

Part Context

This component belongs to the Sound Terminal family of audio amplifiers from STMicroelectronics. It utilizes advanced power ICV PNP technology for efficient rail-to-rail operation. The device is designed to replace discrete solutions, reducing board space and assembly complexity while maintaining high audio fidelity.