TDF8544J

I2C-bus controlled 4 x 50 W power amplifier; Stop/start-car prepared: keeps operating without audible disturbance during engine start at a battery voltage as low as 6 V\n Operates in either legacy (non I²C-bus) or I²C-bus modes (3.3 V and 5 V compliant)\n Four hardware-programmable I²C-bus addresses\n Can drive 2 Ω and 4 Ω loads\n Speaker fault detection\n Start-up diagnostics with load detection: open, short, present; filtered for door-slam and chatter relays\n AC load (tweeter) detection with low and high current mode\n Gain select after start-up without audible disturbance\nIndependent selectable soft mute of front and rear channels\nProgrammable gain (26 dB and 16 dB), independently programmable for the front and rear channels\n Line driver mode supports engine start at a battery voltage as low as 6 V (16 dB and mid-tap voltage 0.25VP)\nProgrammable clip detect: 2 %, 5 % or 10 %\nProgrammable thermal pre-warning\nPin STB can be programmed/multiplexed with second-clip detect\n Clip information of each channel can be directed separately to pin DIAG or pin STB\nIndependent enabling of thermal-, clip- or load fault information (short across the load or to VP or to ground) on pin DIAG\n Loss-of-ground and open VP safe (minimum series resistance required)\nAll amplifier outputs short-circuit proof to ground, supply voltage and across the load (channel independent)\nAll pins short-circuit proof to ground\nTemperature controlled gain reduction to prevent audio holes at high junction temperatures\nProgrammable low battery voltage detection to enable 7.5 V or 6 V minimum battery voltage operation\nOvervoltage protection (load-dump safe up to VP = 50 V) with overvoltage pre-warning at 16 V\nOffset detection\n;

The TDF8544 is one of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers intended for automotiveapplications. It has full I²C-bus controlled diagnostics, including start-up diagnostics. The TDF8544 can operate at a battery voltage as lowas 6 V making this amplifier suitable for stop/start-car operation.\nThe amplifier uses a complementary DMOS output stage in a Silicon-On-Insulator (SOI)- based BCD process. The DMOS output stageensures a high power output signal with perfect sound quality. The SOI-based BCD process ensures a robust amplifier, where latch-upcannot occur, with good separation between the four independent channels, with every component isolated and without substratecurrents.\n

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TDF8544JS

TDF8544JS;

Overview

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500-nA,RRIO,NanopowerOperationalAmplifiersforCost-OptimizedSystems

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500-nA,RRIO,NanopowerOperationalAmplifiersforCost-OptimizedSystems

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