Datasheet

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TPA321

SLOS312C – JUNE 2000 – REVISED JUNE 2004

Table 2. TPA321 Power Rating, 5-V, 8-Ω BTL

MAXIMUM AMBIENT

PEAK OUTPUT

AVERAGE OUTPUT POWER DISSIPATION

TEMPERATURE

POWER

POWER (mW)

(mW)

0 CFM

350 350 mW 600 46°C

350 175 mW (3 dB) 500 64°C

350 88 mW (6 dB) 380 85°C

350 44 mW (9 dB) 300 98°C

350 22 mW (12 dB) 200 115°C

350 11 mW (15 dB) 180 119°C

Table 2 shows that the TPA321 can be used to its full 350-mW rating without any heat sinking in still air up to

46°C.