Si824x CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR Features 0.5 A peak output (Si8241) Input to output isolation for low noise (up to 2500 V) 4.0 A peak output (Si8244) Up to 8 MHz operation PWM input Wide operating range High-precision linear programmable 40 to +125 C dead-time generator Transient immunity >45 kV/s 0.4 ns to 1 s RoHS-compliant High latchup immunity >100 V/ns SOIC-16 narrow body Up to 1500 Vrms output-output isolation, supply voltage of 750 V Applications Ordering Information: Class D audio amplifiers See page 27 Description Pin Assignments The Si824x isolated driver family combines two isolated drivers in a single package. The Si8241/44 are high-side/low-side drivers specifically targeted at high-power (>30 W) audio applications. Versions with peak output currents of SOIC-16 (Narrow) 0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a maximum supply voltage of 24 V. 1 16 PWM VDDA Based on proprietary isolation technology, the Si824x audio drivers incorporate 2 15 NC VOA input-to-output and output-to-output isolation, which enables level-translation of signals without additional external circuits as well as use of bipolar supply voltage 14 3 VDDI GNDA up to 750 V. The Si824x audio drivers feature an integrated dead-time generator 13 GNDI 4 NC that provides highly precise control for achieving optimal THD. These products Si8241/44 also have overlap protection that safeguards against shoot-through current DISABLE 5 12 NC damage. The CMOS-based design also provides robust immunity from latch-up DT 6 11 VDDB and high-voltage transients. The extremely low propagation delays enable faster modulation frequencies for an enhanced audio experience. The TTL level NC 7 10 VOB compatible inputs with >400 mV hysteresis are available in PWM input VDDI 8 9 GNDB configuration other options include UVLO levels of 8 V or 10 V. These products are available in narrow body SOIC packages. Functional Block Diagram Patents Pending PWM VDDA VOA DT GNDA VDDI Programmable Dead Time, Control Gating UVLO VDDB DISABLE VOB GNDB GNDI Si8241/44 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 31, 2021 Isolation IsolationSi824x 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 31, 2021