Texas Instruments TPA3132D2RHBT, Class D stereo audio amplifier IC, 42W x 2 @ 4Ω, 25W x 2 @ 8Ω, 4.5V–26V supply, 32-VFQFN Exposed Pad, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Type | Class D |
| Output type | 2-Channel (Stereo) |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 26V |
| Max output power x channels @ load | 42W x 2 @ 4Ohm, 25W x 2 @ 8Ohm |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Features | Mute, Short-Circuit and Thermal Protection, Shutdown |
| Case | 32-VFQFN Exposed Pad |
Built-in short-circuit and thermal protection, plus a shutdown pin and mute function. If a speaker wire shorts or the amp overheats from being cranked in a hot rack, it shuts itself down instead of letting the magic smoke out. That is the kind of thing that keeps a repair from turning into a board swap on site.
The industrial temp range covers most installations outside of a controlled lab.
It delivers 42W per channel into a 4Ω load, and 25W per channel into an 8Ω load — both channels driven.
Yes, it is rated for 42W per channel into 4Ω, so it drives 4-ohm speakers without issue.
Yes, it includes short-circuit and thermal protection, plus a shutdown pin and mute function.
The TPA3132D2 is a higher-power variant in the same family; pin compatibility depends on the specific package and feature set — verify against the respective datasheets for your layout.