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Showing posts with the label 4x25W

4x25 W quad bridge car radio amplifier TDA7381

General description:
The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7381  allows a rail to rail output voltage swing with no need of bootstrap capacitors. Features:
4 x 30 W/4  max.4 x 25 W/4  EIAJ4 x 18 W/4  @ 14.4 V, 1 kHz, 10 %4 x 15 W/4  @ 13.2 V, 1 kHz, 10 %Clipping detectorLow distortionLow output noiseStandby functionMute functionAutomute at min. supply voltage detectionClippingOut to GND shortOut to VS shortThermal shutdownInternally fixed gain (26 dB)No external compensationNo bootstrap capacitorsOutput short circuit to GND, to VS, across the loadVery inductive loadsOverrating chip temperature with soft thermal limiterCircuit diagram:

4 × 25 W BTL quad car radio power amplifier

General Description
The TDA8568Q is a integrated class-B output amplifier in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in BTL configuration, each with a gain of 40 dB. The output power is 4 × 25 W in a 4 Ω load.
Circuit Diagram