Manufacturer: National Semiconductor  •  Series: Boomer®  •  Amplifier Type: Class D  •  Output Type: 2-Channel (Stereo) with Stereo Headphones  •  Max Output Power x Channels @ Load: 2.2W x 2 @ 4 Ohm; 177mW x 2 @ 16 Ohm  •  Voltage - Supply: 2.4 V ~ 5.5 V  •  Operating Temperature: -40°C ~ 85°C  •  Board Type: Fully Populated  •  Utilized IC / Part: LM49270  •  Supplied Contents: Board