TPA0103

Supply voltage, V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
Continuous output current (COUT+, COUT, LOUT, ROUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . internally limited
Operating virtual junction temperature range, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 40°C to 150°C
Operating virtual case temperature range, T_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . 40°C to 125°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

The TPA0103 is a 3-channel audio power amplifier in a 24-pin TSSOP thermal package primarily targeted at desktop PC or notebook applications. The left/right (L/R) channel outputs are single ended (SE) and capable of delivering 500 mW of continuous RMS power per channel into 4- loads. The center channel output is a bridged tied load (BTL) configuration for delivering maximum output power from PC power supplies. Combining the SE line drivers and high power center channel amplifiers in a single TSSOP package simplifies design and free s up board space for other features. Full power distortion levels of less than 0.25% THD+N into 4- loads from a 5-V supply voltage are typical. Low-voltage application are also well served by the TPA0103 providing 800 mW to the center channel into 4- loads with a 3.3-V supply voltage.

Amplifier gain is externally configured by means of two resistors per input channel and does not require external compensation for settings of 1 to 10. A two channel input MUX circuit is integrated on the L/R channel inputs to allow two sets of stereo inputs to the amplifier. In the typical application, the center channel amplifier is driven from a mix of the L/R inputs to produce a monaural representation of the stereo signal. The center channel amplifier can be shut down independently of the L/R output for speaker muting in headphone applications. The TPA0103 also features a full shutdown function for power sensitive applications holding the bias current
to 5 A.

The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only in TO-220-type packages. Thermal impedances of less than 35°C/W are readily realized in multilayer PCB applications. This allows the TPA0103 to operate at full power at ambient temperature of up to 85°C.