TDF8553J datasheet(1/47 Pages) NXP

부품명	TDF8553J

상세설명	I2C-bus controlled 4 X 50 Watt power amplifier and multiple voltage regulator

PDF	47 Pages

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제조업체	NXP [NXP Semiconductors]

홈페이지	http://www.nxp.com

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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).

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 open VP safe

N All outputs protected from short-circuit to ground, to VP or across the load

N All pins protected from short-circuit to ground

N Soft thermal-clipping to prevent audio holes

N Low battery detection

TDF8553J

I2C-bus controlled 4

× 50 Watt power ampliﬁer and multiple

voltage regulator

Rev. 01 — 3 December 2008

Objective data sheet

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