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ISSI IS32AP2123

24W MONO CLASS-D AUDIO AMPLIFIER WITH LOAD DUMP AND I2C DIAGNOSTICS

Details

TopologieAbwärtswandler
Eingangsspannung4.5-24 V
Schaltfrequenz400-500 kHz
IC-RevisionA

Beschreibung

The IS32AP2123 is a Class-D audio amplifier for driving a mono speaker in BTL (Bridge-Tied-Load) configuration. It is capable of delivering 20W into 4Ω speaker at less than 1% THD+N from a 14.4V power supply. It is a mono Class-D audio amplifier designed for automotive applications, such as emergency call (eCall), telematics, and instrument cluster, and infotainment applications. With a wide operating voltage range of 4.5V to 24V makes it ideal for start/stop or backup battery operation. The IS32AP2123 comes with onboard load diagnostic hardware accessible via a standard I2C port. The internal diagnostics evaluate the output impedance to check for shorts across the outputs, to the battery, or to ground. The I2C interface allows the system to read diagnostic and protection device parameters.The integrated 40V load-dump protection reduces external voltage clamp cost and size, for reliable automotive audio systems. The highly efficient (85%) IS32AP2123 comes in a thermally enhanced eTSSOP-16 package requiring no heatsink for typical operation.

Eigenschaften

  • 4.5V to 24V operating range
  • Mono BTL digital power amplifier
  • Differential analog input
  • 24W output power at 10% THD+N into 4Ω
  • 70dB power supply rejection ratio (PSRR)
  • Up to 85% efficiency into 4Ω
  • Support spread spectrum to optimize EMI
  • I2C Interface
    • Query and set up critical device parameters
  • Automatic load diagnostic functions during power up and after fault events:
    • Open and shorted output load
    • Output-to-power and -ground shorts
  • Support AM avoidance (400 and 500kHz modulation frequency)
  • AGC function with adjustable power limiter
  • Protection and monitoring functions:
    • Short-circuit (to ground, VCC or output-to-output) protection
    • 40V load dump protection
    • Output DC level detection while music is playing
    • Over temperature protection
    • Over and under voltage protection
    • Dynamic temperature control to avoid thermal run away
  • Designed for automotive EMC requirements
  • AEC-Q100 Qualified
  • -40°C to +125°C ambient operating temperature

Typische Anwendungen

  • Automotive applications
  • Emergency call (eCall), telematics, and instrument cluster, and infotainment applications

Weiterführende Informationen

Artikeldaten