DocID025375 Rev 5

5/43

TDA7577BLV

List of figures

5

List of figures

Figure 1.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2.

Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3.

Application circuit (TDA7577BLVPD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4.

Quiescent drain current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 5.

Output power vs. supply voltage (4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 6.

Output power vs. supply voltage (2 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 7.

Output power vs. supply voltage (1 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 8.

Distortion vs. output power (4 Ω, STD mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9.

Distortion vs. output power (2 Ω, STD mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 10.

Distortion vs. output power (2 Ω, HI-EFF mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 11.

Distortion vs. output power (1 Ω, STD mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 12.

Distortion vs. frequency (4 Ω load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 13.

Distortion vs. frequency (2 Ω load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 14.

Distortion vs. frequency (1 Ω load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 15.

Output attenuation vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Figure 16.

CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 17.

Cross talk vs frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 18.

Power dissipation vs. average Po (2 Ω, STD mode, sine wave) . . . . . . . . . . . . . . . . . . . . 15

Figure 19.

Power dissipation vs. Po (2 Ω, STD mode, audio program simulation) . . . . . . . . . . . . . . . 15

Figure 20.

Power dissipation vs. average Po (2Ω, HI-EFF mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 21.

Power dissipation vs. Po (1 Ω, STD mode, audio program simulation) . . . . . . . . . . . . . . . 15

Figure 22.

ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . 16

Figure 23.

Turn-on diagnostic: working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Figure 24.

SVR and output behavior - case 1: without turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . 17

Figure 25.

SVR and output pin behavior - case 2: with turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . 18

Figure 26.

Short circuit detection thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 27.

Load detection thresholds - high gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 28.

Load detection thresholds - high gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 29.

Restart timing without diagnostic enable (permanent) each 1ms time,

a sampling of the fault is done . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 30.

Restart timing with diagnostic enable (permanent). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 31.

Current detection high: load impedance |Z| vs. output peak voltage . . . . . . . . . . . . . . . . . 21

Figure 32.

Current detection low: load impedance |Z| vs. output peak voltage . . . . . . . . . . . . . . . . . . 21

Figure 33.

Worst case battery cranking curve sample 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 34.

Worst case battery cranking curve sample 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 35.

Upwards fast battery transitions diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 36.

High efficiency - basic structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 37.

Data validity on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 38.

Timing diagram on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 39.

Timing acknowledge clock pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Figure 40.

PowerSO-36 (slug up) package mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 41.

Flexiwatt 27 (vertical) package mechanical drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 42.

Flexiwatt 27 (horizontal) package mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 43.

Flexiwatt 27 (SMD) package mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40