The Texas Instruments LM4917MTX/NOPB is a Boomer® series Class AB stereo headphone amplifier in a 14-TSSOP package. It delivers 95 mW per channel into a 16 Ω load — enough drive for standard earbuds and small headphones in portable audio gear. The industrial temperature grade (-40°C to 85°C) extends its reach into outdoor handhelds, automotive cabin audio, and factory-floor alert systems.
Key features that matter for the BOM
The LM4917MTX/NOPB includes depop circuitry to suppress turn-on/turn-off clicks — a practical concern for headphone outputs where audible pops annoy the user. Short-circuit and thermal protection add fault tolerance on the output, reducing the risk of field failures from a shorted headphone jack. A shutdown pin lets the system cut supply current when the headphones are unplugged, extending battery life in portable designs. The 14-TSSOP body (0.173" wide, 4.40 mm) is a compact surface-mount footprint that fits tight PCB layouts in handheld and wearable products. The stereo output is ground-referenced, which eliminates the need for large DC-blocking output capacitors — a real board-area and BOM-cost saver compared to older single-supply headphone amps.
No NRND or EOL notice is on record.