TDF8599A datasheet(1/54 Pages) NXP

Part #	TDF8599A

Description	I2C-bus controlled dual channel 135 W/4 W, single channel 250 W/2 W class-D power amplifier with load diagnostics

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The TDF8599A is a dual Bridge-Tied Load (BTL) car audio ampliﬁer comprising an

NDMOST-NDMOST output stage based on SOI BCDMOS technology. Low power

dissipation enables the TDF8599A high-efﬁciency, class-D ampliﬁer to be used with a

smaller heat sink than those normally used with standard class-AB ampliﬁers.

The TDF8599A can operate in either non-I2C-bus mode or I2C-bus mode. When in

I2C-bus mode, DC load detection results and fault conditions can be easily read back from

the device. Up to 15 I2C-bus addresses can be selected depending on the value of the

external resistor connected to pins ADS and MOD.

When pin ADS is short circuited to ground, the TDF8599A operates in non-I2C-bus mode.

Switching between Operating mode and Mute mode in non-I2C-bus mode is only possible

using pins EN and SEL_MUTE.

2.

Features

I High-efﬁciency

I Low quiescent current

I Operating voltage from 8 V to 35 V

I Two 4 Ω/2 Ω capable BTL channels or one 1 Ω capable BTL channel

I Differential inputs

I I2C-bus mode with 15 I2C-bus addresses or non-I2C-bus mode operation

I Clip detect

I Independent short circuit protection for each channel

I Advanced short circuit protection for load, GND and supply

I Load dump protection

I Thermal foldback and thermal protection

I DC offset protection

I Selectable AD or BD modulation

I Parallel channel mode for high current drive capability

I Advanced clocking:

N Switchable oscillator clock source: internal for Master mode or external for Slave

mode

N Spread spectrum mode

N Phase staggering

N Frequency hopping

I No ‘pop noise’ caused by DC output offset voltage

TDF8599A

I2C-bus controlled dual channel 135 W/4

Ω, single channel

250 W/2

Ω class-D power ampliﬁer with load diagnostics

Rev. 02 — 30 June 2009

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