TDF8553J

TDF8553J I2C-bus controlled 4 × 50 Watt power amplifier and multiple voltage regulator Rev. 01 — 3 December 2008 Objective data sheet 1. General description 1.1 Amplifiers The TDF8553 has a complementary quad audio power amplifier that uses BCDMOS technology. It contains four amplifiers configured in Bridge Tied Load (BTL) to drive speakers for front and rear left and right channels. The I2C-bus allows diagnostic information of each amplifier and its speaker to be read separately. Both front and both rear channel amplifiers can be configured independently in line driver mode with a gain of 20 dB (differential output) or amplifier mode with a gain of 26 dB (BTL output). www.DataSheet4U.com 1.2 Voltage regulators The TDF8553 has a multiple output voltage regulator with two power switches. The voltage regulator contains the following: Four switchable regulators and two standby regulators Two power switches with loss-of-ground protection and surge protection Second supply pin to reduce dissipation by means of an external DC-to-DC converter 2. Features I Amplifiers N I2C-bus control N Can drive a 2 Ω load with a battery voltage of up to 16 V and a 4 Ω load with a battery voltage of up to 18 V N DC load detection, open, short and present N AC load (tweeter) detection N Programmable clip detect; 1 % or 4 % N Programmable thermal protection pre-warning N Independent short-circuit protection per channel N Selectable line driver (20 dB) and amplifier mode (26 dB) N Loss-of-ground and o...