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| Part Number | LM4951TLX/NOPB | LM4954TLX/NOPB | LM49251TLX/NOPB | LM4951TL/NOPB |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | National Semiconductor | Texas Instruments |
| Product Status | Active | Active | Active | Active |
| Type | Class AB | Class AB | Class D, Class G | Class AB |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) | 2-Channel (Stereo) with Stereo Headphones | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1.8W x 1 @ 8Ohm | 3W x 1 @ 8Ohm | 1.37W x 2 @ 8Ohm; 20mW x 2 @ 32Ohm | 1.8W x 1 @ 8Ohm |
| Voltage - Supply | 2.7V ~ 9V | 2.7V ~ 9V | 2.7V ~ 5.5V | 2.7V ~ 9V |
| Features | Depop, Shutdown, Thermal Protection | Depop, Shutdown, Thermal Protection | Depop, I²C, Shutdown, Volume Control | Depop, Shutdown, Thermal Protection |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | 9-DSBGA (1.6x1.6) | 9-µSMD (1.49x1.49) | 30-DSBGA | 9-DSBGA (1.6x1.6) |
| Package / Case | 9-WFBGA, DSBGA | 9-WFBGA | 30-WFBGA, DSBGA | 9-WFBGA, DSBGA |
