SA58637BS,118 NXP

SA58637 2 2.2 W BTL audio amplier Rev. 01 25 February 2008 Product data sheet 1. General description The SA58637 is a two-channel audio amplier in an HVQFN20 package. It provides power output of 2.2 W per channel with an 8 load at 9 V supply. The internal circuit is comprised of two Bridge-Tied Load (BTL) ampliers with a complementary PNP-NPN output stage and standby/mute logic. The SA58637 is housed in a 20-pin HVQFN package, which has an exposed die attach paddle enabling reduced thermal resistance and increased power dissipation. 2. Features n Low junction-to-ambient thermal resistance using exposed die attach paddle n Gain can be xed with external resistors from 6 dB to 30 dB n Standby mode controlled by CMOS-compatible levels n Low standby current < 10 A n No switch-on/switch-off plops n High power supply ripple rejection: 50 dB minimum n ElectroStatic Discharge (ESD) protection n Output short circuit to ground protection n Thermal shutdown protection 3. Applications n Professional and amateur mobile radio n Portable consumer products: toys and games n Personal computer remote speakersSA58637 NXP Semiconductors 2 2.2 W BTL audio amplier 4. Quick reference data Table 1. Quick reference data V =6V T =25 C R =8 V = 0 V measured in test circuit Figure 3 unless otherwise CC amb L MODE specied. Symbol Parameter Conditions Min Typ Max Unit V supply voltage operating 2.2 9 18 V CC 1 I quiescent current R = -15 22 mA q L I standby current V =V --10 A stb MODE CC P output power THD+N = 10 % 1.2 1.5 - W o THD+N = 0.5 % 0.9 1.1 - W THD+N = 10 % - 2.2 - W V = 9 V application CC demo board THD+N total harmonic P = 0.5 W - 0.15 0.3 % o distortion-plus-noise 2 PSRR power supply rejection 1 kHz 50 - - dB ratio 3 100 Hz to 20 kHz 40 - - dB 1 With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal to the DC output offset voltage divided by R . L 2 Power supply rejection ratio is measured at the output with a source impedance of R =0 at the input. S The ripple voltage is a sine wave with a frequency of 1 kHz and an amplitude of 100 mV (RMS), which is applied to the positive supply rail. 3 Power supply rejection ratio is measured at the output, with a source impedance of R =0 at the input. S The ripple voltage is a sine wave with a frequency between 100 Hz and 20 kHz and an amplitude of 100 mV (RMS), which is applied to the positive supply rail. 5. Ordering information Table 2. Ordering information Type number Package Name Description Version SA58637BS HVQFN20 plastic thermal enhanced very thin quad at package SOT910-1 no leads 20 terminals body 6 5 0.85 mm SA58637 1 NXP B.V. 2008. All rights reserved. Product data sheet Rev. 01 25 February 2008 2 of 22