SA58631TK 3 W BTL audio amplifier
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SA58631 3 W BTL audio amplier Rev. 02 — 12 October 2007 Product data sheet 1. General description The SA58631 is a one channel audio amplier in an HVSON8 package. It provides power output of 3 W with an 8 Ω load at 9 V supply. The internal circuit is comprised of a BTL (Bridge Tied Load) amplier with a complementary PNP-NPN output stage and standby/mute logic. The SA58631 is housed in an 8-pin HVSON package which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation. 2. Features I I I I I I I I I Low junction-to-ambient thermal resistance using exposed die attach paddle Gain can be xed with external resistors from 6 dB to 30 dB Standby mode controlled by CMOS-compatible levels Low standby current < 10 µA No switch-on/switch-off plops High power supply ripple rejection: 50 dB minimum ElectroStatic Discharge (ESD) protection Output short circuit to ground protection Thermal shutdown protection 3. Applications I Professional and amateur mobile radio I Portable consumer products: toys and games I Personal computer remote speakers

SA58631 NXP Semiconductors 3 W BTL audio amplier 4. Quick reference data Table 1. Quick reference data VCC = 5 V; Tamb = 25 °C; RL = 8 Ω; f = 1 kHz; VMODE = 0 V; measured in test circuit Figure 3; unless otherwise specied. Symbol Parameter Conditions Min Typ Max Unit VCC supply voltage operating Iq quiescent current RL = ∞ Ω 2.2 9 18 V - 8 12 mA Istb standby current VMODE = VCC - - 10 µA Po output power THD+N = 10 % 1 1.2 - W [1] THD+N = 0.5 % 0.6 0.9 - W THD+N = 10 %; VCC = 9 V - 3.0 - W PSRR total harmonic distortion-plus-noise Po = 0.5 W power supply rejection ratio - 0.15 0.3 % [2] 50 -...

SA58631 NXP Semiconductors 3 W BTL audio amplier 6. Block diagram SA58631 IN− IN+ 4 3 VCC 5 6 R R 20 kΩ SVR OUT− 8 OUT+ 2 20 kΩ MODE 1 STANDBY/MUTE LOGIC 7 GND 002aac005 Fig 1. Block diagram of SA58631 7. Pinning information 7.1 Pinning terminal 1 index area MODE 1 SVR 8 2 OUT+ 7 GND SA58631TK IN+ 3 6 VCC IN− 4 5 OUT− 002aac006 Transparent top view Fig 2. Pin conguration for HVSON8 SA58631_2 Product data sheet © NXP B.V. 2007. All rights reserved. Rev. 02 — 12 October 2007 3 of 21

SA58631 NXP Semiconductors 3 W BTL audio amplier 7.2 Pin description Table 3. Pin description Symbol Pin Description MODE 1 operating mode select (standby, mute, operating) SVR 2 half supply voltage, decoupling ripple rejection IN+ 3 positive input IN− 4 negative input OUT− 5 negative output terminal VCC 6 supply voltage GND 7 ground OUT+ 8 positive output terminal 8. Functional description The SA58631 is a single-channel BTL audio amplier capable of delivering 3 W output power to an 8 Ω load at THD+N = 10 % using a 9 V power supply. Using the MODE pin, the device can be switched to standby...

SA58631 NXP Semiconductors 3 W BTL audio amplier 9. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Conditions VCC supply voltage Min Max Unit operating −0.3 +18 V VI input voltage −0.3 VCC + 0.3 V IORM repetitive peak output current - 1 A Tstg storage temperature non-operating −55 +150 °C Tamb ambient temperature operating −40 +85 °C - 10 V - 2.3 W Typ Unit VP(sc) short-circuit supply voltage Ptot total power dissipation [1] [1] HVSON8 AC and DC short-circuit safe voltage. 10. Thermal characteristics Table 5....

SA58631 NXP Semiconductors 3 W BTL audio amplier 11. Static characteristics Table 6. Static characteristics VCC = 5 V; Tamb = 25 °C; RL = 8 Ω; VMODE = 0 V; measured in test circuit Figure 3; unless otherwise specied. Symbol Parameter Conditions VCC supply voltage Min operating Typ Max Unit 2.2 9 18 V - 8 12 mA - - 10 µA - 2.2 - V - - 50 mV Iq quiescent current RL = ∞ Ω Istb standby current VMODE = VCC VO output voltage ∆VO(offset) differential output voltage offset IIB(IN+) input bias current on pin IN+ - - 500 nA IIB(IN−) input bias current on pin IN− - - 500 nA VMODE voltage on pin MODE...

SA58631 NXP Semiconductors 3 W BTL audio amplier 13. Application information C1 1 µF R1 11 kΩ VCC R2 56 kΩ IN− IN+ VI SVR 6 4 5 3 OUT− SA58631 RL 2 8 MODE C2 47 µF 1 100 µF 100 nF OUT+ 7 GND 002aac007 R2 Gain = 2 × -----R1 Fig 3. Application diagram of SA58631 BTL differential output conguration 14. Test information 14.1 Test conditions The junction to ambient thermal resistance, Rth(j-a) = 27.7 K/W for the HVSON8 package when the exposed die attach paddle is soldered to 32 cm2 (5 in2) area of 35 µm (1 ounce) copper heat spreader on the demo PCB. The maximum sine wave power dissipation for...

SA58631 NXP Semiconductors 3 W BTL audio amplier 002aac008 6.0 Po (W) RL = 8 Ω 002aac009 5.0 P (W) 4.0 (3) (2) 4.0 3.0 16 Ω 2.0 (1) 2.0 1.0 0 0 0 5.0 10.0 15.0 20.0 0 50 100 150 Tamb (°C) VCC (V) (1) No heat spreader. (2) Top only heat spreader (9.7 cm2 (1.5 in2), 35 µm (1 ounce) copper). (3) Both top and bottom heat spreader (approximately 32 cm2 (5 in2), 35 µm (1 ounce) copper). Fig 4. Output power versus supply voltage @ THD+N = 10 %; 32 cm2 (5 in2) heat spreader Fig 5. Power dissipation versus ambient temperature 14.2 BTL application Tamb = 25 °C, VCC = 9 V, f = 1 kHz, RL = 8 Ω, Gv = 20...

SA58631 NXP Semiconductors 3 W BTL audio amplier 002aac027 5.0 P (W) 4.0 002aac028 5.0 P (W) 4.0 VCC = 9.0 V 3.0 VCC = 9.0 V 3.0 7.5 V 2.0 7.5 V 2.0 5.0 V 5.0 V 1.0 1.0 0 0 0 0.6 1.2 1.8 2.4 0 0.6 1.2 1.8 Po (W) Fig 10. Power dissipation versus output power; RL = 4.0 Ω; Gv = 10 dB; 9.7 cm2 (1.5 in2) heat spreader 002aac029 3.0 P (W) 2.4 Po (W) Fig 11. Power dissipation versus output power; RL = 4.0 Ω; Gv = 20 dB; 9.7 cm2 (1.5 in2) heat spreader 002aac030 3.0 P (W) VCC = 9.0 V VCC = 9.0 V 2.0 7.5 V 2.0 1.0 5.0 V 1.0 0 7.5 V 5.0 V 0 0 1.0 2.0 3.0 4.0 0 1.0 2.0 3.0 Po (W) Fig 12. Power...

SA58631 NXP Semiconductors 3 W BTL audio amplier 002aac033 3.0 P (W) 002aac034 1.6 P (W) VCC = 9.0 V VCC = 9.0 V 1.2 2.0 7.5 V 7.5 V 0.8 1.0 5.0 V 5.0 V 0.4 0 0 0 1.0 2.0 3.0 4.0 0 1.0 2.0 Po (W) Fig 16. Power dissipation versus output power; RL = 8.0 Ω; Gv = 20 dB; 32 cm2 (5 in2) heat spreader 101 Fig 17. Power dissipation versus output power; RL = 16 Ω; Gv = 20 dB; 32 cm2 (5 in2) heat spreader 002aac035 102 THD+N (%) 3.0 Po (W) 002aac036 102 THD+N (%) VCC = 5.0 V 7.5 V 9.0 V VCC = 5.0 V 7.5 V 9.0 V 101 1 1 10−1 10−1 10−2 10−2 10−1 10−2 10−2 101 1 10−1 Po (W) 101 1 Po (W) a. f = 1 kHz; RL...