Datasheet TDA7850 (STMicroelectronics)

TDA7850
4 x 50 W MOSFET quad bridge power amplifier
Features
■ High output power capability: – 4 x 5 0 W/ 4 max. – 4 x 3 0 W/ 4 @ 14.4 V, 1 kHz, 10 % – 4 x 8 0 W/ 2 max. – 4 x 5 5 W/ 2 @ 14.4V, 1 kHz, 10 % ■ MOSFET output power stage
Flexiwatt25 (Vertical)
■ Excellent 2 driving capability ■ Hi-Fi class distortion ■ Low output noise ■ ST-BY function ■ Mute function ■ Automute at min. supply voltage detection ■ Low external component count:
Flexiwatt25
– Internally fixed gain (26 dB)
(Horizontal)
– No external compensation – No bootstrap capacitors ■ On board 0.35 A high side driver ■ ESD
Protections:
■ Output short circuit to gnd, to V
Description
s, across the load The TDA7850 is a breakthrough MOSFET ■ Very inductive loads technology class AB audio power amplifier in ■ Overrating chip temperature with soft thermal Flexiwatt 25 package designed for high power car limiter radio. The fully complementary P-Channel/N- ■ Output DC offset detection Channel output structure allows a rail to rail output voltage swing which, combined with high ■ Load dump voltage output current and minimized saturation losses ■ Fortuitous open gnd sets new power references in the car-radio field, ■ Reversed battery with unparalleled distortion performances. The TDA7850 integrates a DC offset detector.
Table 1. Device summary Order code Package Packing
TDA7850 Flexiwatt25 (Vertical) Tube TDA7850H Flexiwatt25 (Horizontal Tube September 2013 Rev 6 1/18 www.st.com 1 Document Outline Table 1. Device summary 1 Block diagram and application circuit 1.1 Block diagram Figure 1. Block diagram 1.2 Standard test and application circuit Figure 2. Standard test and application circuit 2 Pin description Figure 3. Pin connection (top view) 3 Electrical specifications 3.1 Absolute maximum ratings Table 2. Absolute maximum ratings 3.2 Thermal data Table 3. Thermal data 3.3 Electrical characteristics Table 4. Electrical characteristics Figure 4. Components and top copper layer of the Figure 2. Figure 5. Bottom copper layer Figure 2. 3.4 Electrical characteristic curves Figure 6. Quiescent current vs. supply voltage Figure 7. Output power vs. supply voltage (RL = 4W) Figure 8. Output power vs. supply voltage (RL = 2W) Figure 9. Distortion vs. output power (RL = 4W) Figure 10. Distortion vs. output power (RL = 2W) Figure 11. Distortion vs. frequency (RL = 4W) Figure 12. Distortion vs. frequency (RL = 2W) Figure 13. Crosstalk vs. frequency Figure 14. Supply voltage rejection vs. frequency Figure 15. Output attenuation vs. supply voltage Figure 16. Power dissipation and efficiency vs. output power (RL = 4W, SINE) Figure 17. Power dissipation and efficiency vs. output power (RL = 2W, SINE) Figure 18. Power dissipation vs. output power (RL = 4W, audio program simulation) Figure 19. Power dissipation vs. output power (RL = 2W, audio program simulation) Figure 20. ITU R-ARM frequency response, weighting filter for transient pop 4 Application hints 4.1 SVR 4.2 Input stage 4.3 Standby and muting 4.4 DC offset detector 4.5 Heatsink definition 5 Package information Figure 21. Flexiwatt25 (vertical) mechanical data and package dimensions Figure 22. Flexiwatt25 (horizontal) mechanical data and package dimensions 6 Revision history Table 5. Document revision history