TDF8546: I²C-bus controlled 4 x 45 W best efficiency amplifier
The TDF8546 is one of a new generation of complementary quad Bridge-Tied Load (BTL) audio power amplifiers intended for automotive applications. It has a best efficiency mode with full I²C-bus controlled diagnostics, including start-up diagnostics. The TDF8546 can operate at a battery voltage as low as 6 V making this amplifier suitable for stop/start-car operation.
The new best efficiency principle uses a patented switch technique which reduces switching distortion. To reduce power dissipation, the new best efficiency principle uses the audio information on all four channels instead of only the front or rear signals. Dissipation is more than 65 % less than standard BTL when used for front and rear correlated audio signals. Dissipation is 35 % less than standard BTL when used for uncorrelated (delayed) audio signals between front and rear, and 17 % less for uncorrelated audio signals when the front or rear information is used.
The amplifier uses a complementary DMOS output stage in a Silicon-On-Insulator (SOI)- based BCD process. The DMOS output stage ensures a high power output signal with perfect sound quality. The SOI-based BCD process ensures a robust amplifier, where latch-up cannot occur, with good separation between the four independent channels, with every component isolated and without substrate currents.
sot1154-1_3d
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| I2C-bus controlled 4 x 45 W best efficiency amplifier (REV 8.0) PDF (405.0 kB) TDF8546_SDS | 04 May 2015 |
Brochures (2)
| Name/Description | Modified Date |
|---|---|
| Seamless sound experience for stop and start cars (REV 1.0) PDF (922.0 kB) 75017414 | 01 May 2013 |
| Continous sound experience for stop/start cars (REV 1.0) PDF (96.0 kB) 75017062 | 27 Sep 2011 |
Package Information (3)
| Name/Description | Modified Date |
|---|---|
| plastic dual bent surface mounted SIL power package; 27 leads (REV 1.0) PDF (462.0 kB) SOT1154-1 | 08 Feb 2016 |
| plastic DIL-bent-SIL (special bent) power package; 27 leads (lead length 6.8 mm) (REV 1.0) PDF (475.0 kB) SOT827-1 | 08 Feb 2016 |
| plastic, heatsink small outline package; 36 leads; low stand-off height (REV 1.0) PDF (738.0 kB) SOT851-2 | 08 Feb 2016 |
Ordering Information
| Product | Package version | Remarks | RMS power (W) | Gain (dB) | Channel configuration | Package name |
|---|
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TDF8546JS/N2 | | SOT1154-1 | Tube in Drypack | Active | TDF8546JS/N2,512 (9352 977 55512) | Standard Marking | TDF8546JS/N2 |   | 3 | 3 | |
| TDF8546JS/N2Z | | SOT1154-1 | Tube in Drypack | Active | TDF8546JS/N2ZS (9353 049 23512) | Standard Marking | TDF8546JS/N2Z | | 3 | 3 | |
| TDF8546J/N2 |  | SOT827-1 | Bulk Pack | Active | TDF8546J/N2,112 (9352 977 54112) | Standard Marking | TDF8546J/N2 | | NA | NA | |
| TDF8546J/N2Z | | SOT827-1 | Bulk Pack | Active | TDF8546J/N2ZU (9353 049 21112) | Standard Marking | TDF8546J/N2Z | | NA | NA | |
| TDF8546TH/N2 |  | SOT851-2 | Reel 13" Q1/T1 | Active | TDF8546TH/N2,118 (9352 977 57118) | Standard Marking | TDF8546TH/N2 | | 1 | 1 | |
| TDF8546TH/N2Z | | SOT851-2 | Reel 13" Q1/T1 | Active | TDF8546TH/N2ZJ (9353 049 25118) | Standard Marking | TDF8546TH/N2Z | | 1 | 1 |
- I2C-bus controlled 4 x 45 W best efficiency amplifier TDF8546
- Seamless sound experience for stop and start cars TDF8546
- Continous sound experience for stop/start cars TDF8546
- plastic dual bent surface mounted SIL power package; 27 leads TDF8546
- plastic DIL-bent-SIL (special bent) power package; 27 leads (lead length 6.8 mm) TDF8546
- plastic, heatsink small outline package; 36 leads; low stand-off height TDF8599
- TDF8546
- TDF8546
- TDF8599
