FDA903D 1 x 45 W class D digital input automotive power amplifier with I current Load monitoring, wide voltage operation range for car audio and telematic Datasheet - production data 2 loads driving Power limiting function (configurable through 2 I C) 2 I C bus diagnostics: Short to V /GND CC Short load and open load detection (also in 3RZHU662 play mode) ( S SDG GRZQ Four thermal warnings 36 * * DC offset detector (also in play) and hot spot detection Features Clipping detector AEC-Q100 qualified Integrated thermal protection 2 Integrated 108 dB D/A conversion Legacy mode ( no I C mode), 4 configurable 2 settings I S and TDM digital input (4/8/16CH TDM) Short circuit and ESD integrated protections Input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz Package: PowerSSO-36 exposed pad down 2 Full I C bus driving (3.3/1.8 V) T able 1. Device summary CISPR 25 - Class V (Fourth edition) Order code Package Packing Very low quiescent current FDA903D-EHT Tape & reel PowerSSO-36 Output lowpass filter included in the feedback (exposed pad down) allowing outstanding audio performances FDA903D-EHX Tube Wide operating supply range from 3.3 to 18 V, suitable for car radio, telematics and e-call MOSFET power outputs allowing high output power capability 1 x 25 W /4 14.4 V, 1 kHz THD = 1% 1 x 30 W /4 14.4 V, 1 kHz THD = 10% May 2018 DocID031502 Rev 2 1/82 This is information on a product in full production. www.st.comContents FDA903D Contents 1 Description . 8 2 Block diagram 9 3 Pins description . 10 4 Application diagram 12 5 Electrical specifications . 13 5.1 Absolute maximum ratings 13 5.2 Thermal data 13 5.3 Electrical characteristics 14 5.4 Typical curves of the main electrical parameters . 17 6 General information 23 6.1 LC filter design . 23 6.2 Load possibilities . 23 7 Finite state machine 24 7.1 Device state and address selection . 25 7.2 Standby state 26 7.3 Diagnostic Vcc-Gnd state . 26 7.4 ECO-mode state 26 7.5 MUTE-PLAY and diagnostic states . 27 7.6 Operation compatibility vs battery 28 8 Muting function architecture . 29 8.1 Command dependence 29 8.2 Analog-Mute . 30 8.3 Digital-Mute . 30 8.4 Mixed mute advantages 31 9 Hardware mute pin . 33 10 Power limiter function . 34 2/82 DocID031502 Rev 2