Maxim Integrated MAX9761EUI, Class AB stereo audio power amplifier, 2-channel (stereo) with stereo headphones, 3W x 2 @ 3Ω output, 4.5V–5.5V supply, -40°C to 85°C, 28-TSSOP exposed pad.
| Parameter | Value |
|---|---|
| Type | Class AB |
| Output type | 2-Channel (Stereo) with Stereo Headphones |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Max output power x channels @ load | 3W x 2 @ 3Ohm |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Bulk |
| Case | 28-TSSOP (0.173\", 4.40mm Width) Exposed Pad |
The 3W x 2 @ 3Ω rating is the headline figure. At 5V supply into a 3Ω load, that output level is typical for a Class AB desktop speaker amp.
The exposed pad is the key thermal feature. Solder the exposed pad to a copper plane on the PCB — without it, the 3W output stage will hit thermal shutdown on sustained high-level audio.
RoHS non-compliant, so if your BOM requires RoHS exemption or you are shipping into a jurisdiction that enforces RoHS, factor that in.
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