I2C-bus controlled dual channel 135 W/4 , single channel
250 W/2 class-D power amplifier with load diagnostics
Rev. 3 — 2 May 2013
Product data sheet
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 and benefits
Low quiescent current
Operating voltage from 8 V to 35 V
Two 4 /2 capable BTL channels or one 1 capable BTL channel
I2C-bus mode with 15 I2C-bus addresses or non-I2C-bus mode operation
Independent short circuit protection for each channel
Advanced short circuit protection for load, GND and supply
Load dump protection
Thermal foldback and thermal protection
DC offset protection
Selectable AD or BD modulation
Parallel channel mode for high current drive capability
Switchable oscillator clock source: internal for Master mode or external for Slave
Spread spectrum mode
No ‘pop noise’ caused by DC output offset voltage