1/8 TDA7253L september 2004 1features wide supply voltage range 6w @ v s = 20v, r l = 8 ? , thd=10% mute facility (pop free) with low consumption ac short circuit protection thermal overload protection (150c 2description the TDA7253L is class ab audio power amplifier assembled in the single in line 10 pins package. 6w amplifier with muting figure 2. test and application circuit = mute sw csvr 100 f r7 820 27k c2 100nf in (l) 5 3 TDA7253L 6 cf 47 fr4 47 r3 1.5k c9 0.1 f r6 4.7 rl c11 1000 f c4 0.1 f c5 470 f 9 7 4 +v s d02au1429 rev. 2 fi gure 1 . p ac k age table 1. order codes part number package TDA7253L sip10 sip10 obsolete product(s) - obsolete product(s)
TDA7253L 2/8 table 2. absolute maximum ratings table 3. thermal data figure 3. pin connection (top view) figure 4. block diagram symbol parameter value unit v s supply voltage 30 v i o output peak current (repetitive f >20hz) 1.7 a i o output peak current (non repetitive, t = 100 s) 2 a p tot total power dissipation (t case = 70c) 8 w t op operating temperature range 0 to 70 c t stg ,t j storage & junction temperature -40 to 150 c symbol parameter value unit r th j-case thermal resistance junction to case max 9 c/w 1 2 3 4 5 6 7 8 n.c. output gnd non inverting input inverting input svr/muting n.c. n.c. 9 10 +v s n.c. d02au1430 in- in+ svr v s out cf coup1 rfi 27k l rf1 rf2 mute 6 4 5 3 9 7 - + d02au1431 gnd turn-on and off references sc protection th protection tj obsolete product(s) - obsolete product(s)
3/8 TDA7253L table 4. electrical characteristcs (refer to the test and application circuit, v s = 20v; r l = 8 ? ; g v = 30db; f = 1khz; t amb = 25c unless otherwise specified). note: to avoid pop-on noise symbol parameter test condition min. typ. max. unit v s supply voltage 10 24 v v o quiescent output voltage 9.5 v i q total quiescent current 30 60 ma p o output power d = 10% 5 6 w d = 1% 4 5 w d total harmonic distortion po = 1w 0.03 0.3 % r i input resistance 100 200 k ? f l low frequency roll-off (-3db) 40 hz f h high frequency roll-off (-3db) 80 khz e n total input noise voltage a curve; r s = 10k ? 2mv f = 22hz to 22khz; r s = 10k ? 2.5 10 v svr supply voltage rejection r s = 10k ? ; f = 100hz; vr = 0.5v 46 60 db vt mute mute threshold 1 1.6 v vt play play threshold 4.5 v a m mute attenuation 80 100 db i qmute quiescent current mute 6 10 ma c f c svr --- ----------- 1 figure 5. output power vs. supply voltage figure 6. quiescent current vs. supply voltage figure 7. distortion vs output power p out (w) 0 8 121620v s (v) 4 8 12 f = 1khz rl = 8 ? d = 10% d = 1% d02au1432 i q (ma) 20 8 121620v s (v) 30 25 35 45 40 d02au1433 0.01 10 0.02 0.05 0.1 0.2 0.5 1 2 5 d% 100m 8 200m 300m 500m700m 1 2 3 4 5 6 7 pout (w) f =15khz f =1khz obsolete product(s) - obsolete product(s)
TDA7253L 4/8 figure 8. pc board component layout figure 9. evaluation board top layer layout figure 10. evaluation board bottom layer layout obsolete product(s) - obsolete product(s)
5/8 TDA7253L 3 heat sink dimensioning: in order to avoid the thermal protection inte rvention, that is placed approximatively at t j = 150c, it is important the dimensioning of the heat sinker r th (c/w). the parameters that influence the dimensioning are: ? maximum dissipated power for the device (p dmax ) ? max thermal resistance junction to case (r th j-c ) ? max. ambient temperature t amb max ? quiescent current i q (ma) 3.1 example: v cc = 20v, r load = 8ohm, r th j-c = 9 c/w , t amb max = 50c p dmax = (n channels) p dmax = 1 ( 2.5 ) + 0.5 = 3w (heat sinker) in figure 8 is shown the power derating curve for the device. figure 11. power derating curve 2v cc 2 2 r load ? - ------------------------- i q v cc ? + r th c-a 150 t amb max ? p d max ---------------------------------------- - r th j-c ? 150 50 ? 6 ---------------------- 9 ? 24.3 c/w === a) infinite heatsink b) 10 c/ w c) 15 c/ w d) 20 c/ w (d) (a) (b) (c) 0 2 4 6 8 10 04080120160 tamb (c) pd (w) a) infinite heatsink b) 10 c/ w c) 15 c/ w d) 20 c/ w (d) (a) (b) (c) 0 2 4 6 8 10 04080120160 tamb (c) pd (w) obsolete product(s) - obsolete product(s)
TDA7253L 6/8 figure 12. sip10 mechanical data & package dimensions outline and mechanical data 0016108 d d n m l1 11 0 d1 l3 l2 la1 e3 b1 b ec1 a c2 c p l4 sip10 b3 dim. mm inch min. typ. max. min. typ. max. a7.10.280 a1 2.7 3 0.106 0.118 b 24.8 0.976 b1 0.5 0.020 b3 0.85 1.6 0.033 0.063 c 3.3 0.130 c1 0.43 0.017 c2 1.32 0.052 d 23.7 0.933 d1 14.5 0.571 e 2.54 0.100 e3 22.86 0.900 l 3.1 0.122 l1 3 0.118 l2 17.6 0.693 l3 0.25 0.010 l4 0.254 0.010 m 3.2 0.126 n 1 0.039 p 0.15 0.006 sip10 weight: 2.02gr obsolete product(s) - obsolete product(s)
7/8 TDA7253L table 5. revision history date revision description of changes june 2003 1 first issue september 2004 2 changed status and the graphic aspect in compliant to the new rules ?corporate technical pubblications design guide? obsolete product(s) - obsolete product(s)
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