SA58631TK,157

Overview

The SA58631TK,157 is a single-channel audio amplifier housed in an HVSON8 package with an exposed die attach paddle. It delivers 3 W output power to an 8 Ω load at a 9 V supply voltage. The internal circuit comprises a Bridge Tied Load (BTL) amplifier with a complementary PNP-NPN output stage and standby/mute logic. Operating supply voltage ranges from 2.2 V to 18 V. Quiescent current is typically 8 mA, while standby current is less than 10 μA. Voltage gain is adjustable via external resistors between 6 dB and 30 dB.

Feature Summary

• Low junction-to-ambient thermal resistance achieved through the exposed die attach paddle
• Standby mode controlled by CMOS-compatible logic levels for low current consumption
• High power supply ripple rejection capability of 50 dB minimum
• Integrated protection against electrostatic discharge, output short circuits, and thermal overload

Applications

• Professional and amateur mobile radio systems
• Portable consumer products such as toys and games
• Personal computer remote speakers

Procurement Notes

Verify the specific ordering suffix to confirm package variant and tape-and-reel specifications. Confirm RoHS compliance status and material declaration details for environmental requirements. Check the latest NXP product status page for manufacturing availability and lifecycle notifications before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high efficiency and minimal heat dissipation in compact spaces. The exposed paddle design supports effective thermal management on PCBs with adequate copper spreaders. Ensure the load impedance and supply voltage align with the BTL configuration limits to maximize output power without triggering thermal shutdown.

Part Context

This device belongs to the SA58631 series of mono audio amplifiers manufactured by NXP Semiconductors. It utilizes the SOT909-1 HVSON8 plastic thermal enhanced very thin small outline package. The part number SA58631TK specifically denotes the tape and reel packaging format for surface mount assembly.

Replacement Considerations

SA58631TK