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STMicroelectronics TS419IST — Analog & Data Acquisition

STMicro TS419IST Class AB Audio Amp, 367mW, 8-MiniSO

MPNTS419IST
End of Life

STMicroelectronics TS419IST, Class AB audio amplifier, 1-channel (mono), 367mW output into 16Ω, 2V to 5.5V supply, -40°C to 85°C, 8-MiniSO package.

$1.41Ref. price · indicative, final on quote
STMicroelectronics TS419IST datasheet (PDF)
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TS419IST specifications
ParameterValue
TypeClass AB
Output type1-Channel (Mono)
MountingSurface Mount
Supply voltage2V ~ 5.5V
Max output power x channels @ load367mW x 1 @ 16Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesDifferential Inputs, Short-Circuit Protection, Standby
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)

Product details

367 mW into 16 Ω — where this amp fits

That output level lands it squarely in headphone-driver or small-speaker territory — think portable audio, voice prompts in industrial panels, or battery-powered notification buzzers. The differential input architecture rejects common-mode noise picked up on long signal traces, and the standby pin lets the system cut quiescent draw when audio is idle.

The package is compatible with standard 8-pin TSSOP and MSOP footprints.

The ROHS3 status covers the current exemption list, so no re-qualification needed for EU-market builds.

Frequently asked questions

What is the maximum output power for TS419IST?

The TS419IST delivers 367 mW into a 16 Ω load from a single supply. That is the rated maximum per channel (mono output).

Is TS419IST compatible with a 3.3 V supply?

Yes — the supply range is 2 V to 5.5 V, so 3.3 V is well within the operating window.

What is the equivalent of TS419IST?

The closest functional peer in the same Class AB, mono, surface-mount family is the TS4990IDT, which delivers 1.2 W into 8 Ω — a higher-power sibling. For a lower-power stereo headphone amp, the TS482IDT (107 mW per channel) is an alternative. Neither is a drop-in replacement; verify the pinout and external component count from the respective datasheets.