TFA9810

www.DataSheet4U.com TFA9810 Stereo full-bridge audio amplifier 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-efficiency class D audio amplifier 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 amplifier 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 I I I I I I Stereo full-bridge power comparator for class D audio amplifier applications No external heat sink required Operating voltage range: asymmetrical from 8 V to 20 V Thermally protected Zero dead-time switching Current-limiting (no audible interruptions) 3. Applications I I I I I I Self-oscillating or open-loop class D audio amplifier applications Flat-panel television sets Flat-panel monitors Multimedia systems Wireless speakers High-end CRT television sets 4. Quick reference data Table 1. Quick reference data Tamb = 25 °C; VP = 12 V; fosc = 550 kHz; Figure 33 unless otherwise specified Symbol VP Ioff Iq ηpo Parameter supply voltage off-state current quiescent current output power efficiency Condition VP = VDDPx − VSSPx off mode with load, filter and snubbers connected output power 2 x 9 W into 8 Ω; Po = Po(nom) Min 8 87 Typ 12 110 35 89 Max 20 200 45 Unit V µA mA ...