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TDF8599BTH

I2C-bus controlled dual channel 43 W/4Ω, single channel 85 W/1Ω class-D power amplifier with load diagnostics

NXP Semiconductors. 

TDF8599B

I2C-bus controlled dual channel 43 W/4 Ω, single channel

85 W/1 Ω class-D power amplifier with load diagnostics

Rev. 01 — 29 July 2009

Product data sheet

1. General description

The TDF8599B 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 TDF8599B high-efficiency, class-D amplifier to be used with a

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

The TDF8599B 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 TDF8599B 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 24 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

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