Maxim Integrated MAX98357BEWL+T, Class D mono audio amplifier, 3.2W output into 4Ω, 2.5V–5.5V supply, 9-WLP package, industrial temperature range -40°C to +85°C.
| Parameter | Value |
|---|---|
| Type | Class D |
| Output type | 1-Channel (Mono) |
| Mounting | Surface Mount |
| Supply voltage | 2.5V ~ 5.5V |
| Max output power x channels @ load | 3.2W x 2 @ 4Ohm |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Features | Depop, Short-Circuit and Thermal Protection |
| Case | 9-WFBGA, WLBGA |
The depop feature eliminates the audible pop when the amplifier powers up or down — no external mute transistor or RC snubber needed. Short-circuit protection shuts down the output if the speaker wires touch, and thermal protection throttles back before the die hits its limit. For a battery-powered design, that means fewer passives and a simpler BOM.
The 9-WLP package has 9 bumps. It is a surface-mount part that reflows like any BGA.
This part is available to order through independent distribution. Submit an RFQ for current pricing and lead time — availability is confirmed at quote time.
It delivers 3.2W into a 4Ω load (mono) at the rated supply voltage. Output scales with supply and load impedance.
No, the MAX98357BEWL+T is a filterless Class D amplifier — it does not require an external output filter inductor. The speaker itself provides the necessary inductance.