TDA1557Q product image


2 x 22 W BTL stereo car radio power amplifier with speaker protection
NXP Semiconductors

TheTDA1557Qis a monolithic integrated class-B output amplifier in a 13-lead single-in-line (SIL) plastic power package. The device contains 2 ´ 22 W amplifiers in BTL configuration and has been primarily developed for car radio applications.


TDA1557Q Features


  • · Requires very few external components
  • · High output power
  • · Low offset voltage at output
  • · Fixed gain
  • · Good ripple rejection
  • · Mute/stand-by switch
  • · Load dump protection
  • · AC and DC short-circuit-safe to ground and VP
  • · Thermally protected
  • · Reverse polarity safe
  • · Capability to handle high energy on outputs (VP = 0)
  • · Protected against electrostatic discharge
  • · No switch-on/switch-off plop
  • · Flexible leads
  • · Low thermal resistance
positive supply voltage range (operating) VP6.0 to 18 V
Maximum positive supply voltage range (non-operating) VP30 V
Maximum positive supply voltage range (load dump) VP45 V
Maximum repetitive peak output current IORM4 A
total quiescent current Itot80 mA
Maximum switch-by current Isb100 A
Maximum switch-on current Isw60 A
input impedance25 k?
output power (THD = 10%; 4???PO22 ?W
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