TFA9810TN1

TFA9810 Stereo full-bridge audio amplier 2 x 12 W Rev. 03 20 February 2008 Product data sheet 1. General description The TFA9810 is a two-channel power comparator for high-efciency class D audio amplier systems. It contains two full-bridge Bridge-Tied Load (BTL) power stages, drive logic, protection control logic and full differential input comparators. By using this power comparator a compact closed-loop self-oscillating digital amplier system or open-loop system can be built. The TFA9810 does not require a heat sink and operates using an asymmetrical supply voltage. 2. Features n Stereo full-bridge power comparator for class D audio amplier applications n No external heat sink required n Operating voltage range: asymmetrical from 8 V to 20 V n Thermally protected n Zero dead-time switching n Current-limiting (no audible interruptions) 3. Applications n Self-oscillating or open-loop class D audio amplier applications n Flat-panel television sets n Flat-panel monitors n Multimedia systems n Wireless speakers n High-end CRT television sets 4. Quick reference data Table 1. Quick reference data T = 25 C V = 12 V f = 550 kHz Figure 33 unless otherwise specied amb P osc Symbol Parameter Condition Min Typ Max Unit V supply voltage V = V - V 812 20 V P P DDPx SSPx I off-state current off mode - 110 200 A off I quiescent current with load, lter and -35 45 mA q snubbers connected output power output power 87 89 - % po efciency 2 x 9 W into 8 P =P o o(nom)TFA9810 NXP Semiconductors Audio amplier 2 x 12 W Table 1. Quick reference data continued T = 25 C V = 12 V f = 550 kHz Figure 33 unless otherwise specied amb P osc Symbol Parameter Condition Min Typ Max Unit P RMS output power R = 8 V = 12 V - 9.5 - W o(RMS) L P THD = 10 % Two channel driven no heat sink required. P output power V = 12 V R = 8 -- - - o P L THD = 10 % 8.5 9.5 - W THD = 1 % 6.5 7.5 - W V = 14 V R = 8 -15 - W P L THD = 10 % thermally limited V = 16 V R = 8 -15 - W P L THD = 10 % thermally limited V = 12 V R = 6 -12 - W P L THD = 10 % thermally limited V = 12 V R = 4 -15 - W P L THD = 10 % thermally limited 5. Ordering information Table 2. Ordering information Type number Package Name Description Version TFA9810T SO32 SO32: plastic small outline package 32 leads body width 7.5 mm SOT287-1 TFA9810 3 NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 20 February 2008 2 of 29