NXP Semiconductors TFA9810 12.2 Dynamic characteristics

TFA9810_3 © NXP B.V. 2008. All rights reserved.

Product data sheet Rev. 03 — 20 February 2008 16 of 29

NXP Semiconductors TFA9810

Audio ampliﬁer 2 x 12 W

[1] Current limiting concept: in overcurrent condition no interruption of the audio signal in case of impedance drop.

12.2 Dynamic characteristics

IIinput current VI = 5 V - 1 20 µA

SO/OL input

VIL LOW-level input voltage with respect to VSSD - - 0.4 V

VIH HIGH-level input voltage with respect to VSSD 3 4 4.5 V

STABI

VSTABI voltage on pin STABI with respect to VSS 10 11 12 V

Comparator full-differential input stage

Voffset(i)(eq) equivalent input offset

voltage --1mV

20 Hz < f < 20 kHz - - 15 µV

Vcm common mode voltage VSSA + 3 - VDDA −1V

IIB input bias current - - 1 µA

OverTemperature Protection (OTP)

Tprot protection temperature 150 - - °C

OverVoltage Protection (OVP)

Vth(ovp) overvoltage protection

threshold voltage level internal ﬁxed 20 21.5 23 V

UnderVoltage Protection (UVP)

VP(uvp) undervoltage protection

supply voltage level internal ﬁxed 7 7.5 8 V

OverCurrent Protection (OCP)

IO(ocp) overcurrent protection

output current

[1] 3 3.5 - A

Window Protection (WP)

VOoutput voltage high level - VDDA − 1- V

low level - VSSA + 1 - V

Table 9. Static characteristics

…continued

T

amb

= 25

°

C; V

P

= 12 V; f

osc

= 550 kHz; Figure 33 unless otherwise speciﬁed

Symbol Parameter Conditions Min Typ Max Unit

Table 10. Dynamic characteristics

T

amb

= 25

°

C; V

P

= 12 V; R

L

= 8

Ω

;Figure 33 unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

PWM output

trrise time - 10 - ns

tffall time - 10 - ns

Contents

Main 1. General description 2. Features 4. Quick reference data TFA9810 Stereo full-bridge audio amplier 2 x 12 W Rev. 03 20 February 2008 Product data sheet Audio amplier 2 x 12 W = 25 5. Ordering information = 12 V; f = 550 kHz; Figure 33 unless otherwise specied Product data sheet Rev. 03 20 February 2008 3 of 29 6. Block diagram Fig 1. Block diagram 7. Pinning information 7.1 Pinning Fig 2. Pin conguration 7.2 Pin description 8. Functional description 8.1 General 8.2 Interfacing 8.3 Input comparators 8.3.1 Operating in self-oscillating conguration 8.3.2 Operating in open-loop conguration 8.4 Diagnostic 8.5 Protections Page Product data sheet Rev. 03 20 February 2008 8 of 29 NXP Semiconductors TFA9810 9. Internal circuitry Fig 4. Internal circuitry 0001 8.6 Start-up sequence Fig 3. Start-up sequence Product data sheet Rev. 03 20 February 2008 9 of 29 NXP Semiconductors TFA9810 Fig 5. Internal circuitry 0002 Fig 7. Internal circuitry 0004 Fig 6. Internal circuitry 0003 NXP Semiconductors TFA9810 Fig 8. Internal circuitry 0005 Fig 10. Internal circuitry 0007 Fig 9. Internal circuitry 0006 Fig 11. Internal circuitry 0008 Fig 12. Internal circuitry 0009 Fig 14. Internal circuitry 0011 Fig 13. Internal circuitry 0010 Audio amplier 2 x 12 W Fig 15. Internal circuitry 0012 Fig 18. Internal circuitry 0015 Fig 16. Internal circuitry 0013 Fig 17. Internal circuitry 0014 Fig 19. Internal circuitry 0016 Fig 20. Internal circuitry 0017 Fig 22. Internal circuitry 0019 Fig 21. Internal circuitry 0018 10. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). 11. Thermal characteristics 12. Characteristics = 25 12.1 Static characteristics In accordance with the Absolute Maximum Rating System (IEC 60134). 12.2 Dynamic characteristics = 25 = 12 V; f = 550 kHz; Figure 33 unless otherwise specied = 12 V; R 12.3 AC characteristics measured in a typical application = 25 = 8 = 25 = 12 V; R 13. Quality specication 14. Application information 14.1 Output power estimation 14.2 Output current limiting ------------------------------------------------------3 A +()+ DSon Rs (1) RL = 4 (2) RL = 6 (3) RL= 8 14.3 Speaker conguration and impedance 14.4 Differential input 14.5 Single-ended input 14.6 Curves measured in a typical application Fig 29. Input conguration for single-ended input Fig 30. Gain as a function of frequency VP= 12 V, Vi = 100 mV 14.7 Typical application diagram TFA9810 VP=12V,R Fig 32. Total harmonic distortion as a function of output power Fig 31. Total harmonic distortion + noise as a function of frequency VP=12V,R Fig 33. Typical application diagram TFA9810 Fig 34. Typical application diagram TFA9810 with externally adjusted switch-on time 14.8 Typical application: bill of materials 14.9 Snubber network 15. Test information 16. Package outline Fig 35. Package outline SOT287-1 (SO23) SO32: plastic small outline package; 32 leads; body width 7.5 mm SOT287-1 17. Revision history 18. Legal information 18.1 Data sheet status 18.2 Denitions 18.3 Disclaimers 18.4 Trademarks 20. Contents