SSM3515

The SSM3515 is a fully integrated, high efficiency, mono Class-D audio amplifier with digital inputs. The application circuit requires a minimum of external components and can operate from a single 4.5 V to 17 V supply. It can deliver 8.4 W of output power into an 8 Ω load or 15.8 W into an 4 Ω load from a 12 V power supply, or 31.3 W into an 4 Ω load from a 17 V power supply, all with 1% THD + N.The SSM3515 features a high efficiency, low noise modulation scheme that requires no external LC output filters. This scheme provides high efficiency even at low output power. It operates with 92% efficiency at 7 W into an 8 Ω load or 88% efficiency at 15 W into 4 Ω from a 12 V supply.Spread spectrum pulse density modulation provides lower EMI radiated emissions compared with other Class-D architectures, particularly above 100 MHz.The digital input eliminates the need for an external digital-to-analog converter (DAC). The SSM3515 has a micropower shutdown mode with a typical shutdown current of 39 nA at the 12 V PVDD supply. The device also includes pop and click suppression circuitry that minimizes voltage glitches at the output during turn on and turn off.The SSM3515 operates with or without an I²C control interface. The SSM3515 is specified over the commercial temperature range (−40°C to +85°C). It has built in thermal shutdown and output short-circuit protection. It is available in a halide-free, 20-ball, 1.8 mm × 2.2 mm wafer-level chip scale package (WLCSP).