TDA8587J

TDA8587J Rev. 01 — 23 December 2004 www.DataSheet4U.com 4 × 25 W BTL power amplifier and multiple voltage regulator with power switch Preliminary data sheet 1. General description The TDA8587J is a combination of a quad Bridge-Tied Load (BTL) power amplifier, a multiple voltage regulator and a power switch. Several protections and diagnostic options (e.g. DIAG, WARN) are incorporated in this design. This device is primarily developed to cover the complete power supply and audio amplifier requirements in low and mid-end car radio applications. The switchable regulators (regulators 1, 3 and 4) are intended to be used as supplies for the tuner, logic, digital or analog sound processor and CD / tape control. The standby regulator (regulator 2) is specially designed as supply for a microcontroller. In combination with the reset delay capacitor (pin RDC) and the reset output (pin RST), a proper start-up sequence for the microcontroller is guaranteed. The storage capacitor (pin STC) makes this regulator output insensitive for short battery drops (e.g. engine start). The power switch (pin PSW) can be used for switching e.g. an electrically powered antenna, display unit or CD / tape driver. The smart combination of two dynamic buffers and four amplifier output stages makes it possible to create a full quad BTL amplifier, using only six output pins. 2. Features 2.1 General s s s s s s s s s Protected against ElectroStatic Discharge (ESD) Thermal (foldback) protection to prevent overheat...