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STMicroelectronics TS419IST — Logic ICs
STMicroelectronics

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
TS419IST datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

TS419IST Technical Specifications
ParameterValue
TypeClass AB
Output type1-Channel (Mono)
Mounting typeSurface Mount
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.

Package and footprint

The package is compatible with standard 8-pin TSSOP and MSOP footprints. No exposed pad to worry about — thermal dissipation is through the leads, so keep the copper pour on the output pins generous if driving near the 367 mW limit continuously.

Lifecycle and compliance

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.