TDA1562Q Datasheet

The TDA1562Q contains a mono class-H BTL output power amplifier.
At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply voltage the obtainable output power is 70 W.

In normal use, when the output is driven with music-like signals, the high output power is only needed during a small percentage of time. Under the assumption that a music signal has a normal (Gaussian) amplitude distribution, the reduction in dissipation is about 50% when compared to a class-B output amplifier with the same output power. The heatsink should be designed for use with music signals. If the case temperature exceeds 120 °C, the device will switch back from class-H to class-B operation. The high power supply voltage is then disabled and the output power is limited to 20 W.

The device can be used for car audio systems (e.g. car, radio and boosters) as well as mains fed applications (e.g. midi/mini audio combinations and TV sound).

TDA1562Q features

  • Very high output power, operating from a single low supply voltage
  • Low power dissipation, when used for music signals
  • Switches to low output power at too high case temperatures
  • Few external components
  • Fixed gain
  • Differential inputs with high common mode rejection
  • Mode select pin (on, mute and standby)
  • Status I/O pin (class-H, class-B and fast mute)
  • All switching levels with hysteresis
  • Diagnostic pin with information about:
    • Dynamic Distortion Detector (DDD)
    • Any short-circuit at outputs
    • Open load detector
    • Temperature protection
  • No switch-on or switch-off plops
  • Fast mute on supply voltage drops
  • Quick start option (e.g. car-telephony/navigation)
  • Low (delta) offset voltage at the outputs
  • Load dump protection
  • Short-circuit safe to ground, supply voltage and across the load
  • Low power dissipation in any short-circuit condition
  • Protected against electrostatic discharge
  • Thermally protected
  • Flexible leads

TDA1562Q pin configuration

tda1562q pins

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