8W BTL audio power amplification technology designed by TDA1517ATW

June 07, 2019

The TDA1517ATW is NXP's 8W BTL or 2 × 4 W SE audio power amplifier with integrated Class AB output amplifier in the HTSSOP20 package for use as a mono bridged load (BTL) or stereo single-ended (SE) connection. Ripple suppression as well as AC and DC short circuit safety. This article describes the main features of TDA1517ATW, the block diagram and the BTL and SE connection application block diagram.

TDA1517ATW: 8 W BTL or 2 × 4 W SE power amplifier

The TDA1517ATW is an integrated class-AB output amplifier contained in a plasTIc heatsink thin shrink small outline package (HTSSOP20). The device is primarily developed for mulTImedia applicaTIons.

TDA1517ATW main features:

• Requires very few external components

• Flexibility in use: mono Bridge-TIed Load (BTL) and stereo Single-Ended (SE); it should be noted that in stereo applications the outputs of both amplifiers are in opposite phase

• High output power

• Low offset voltage at output (important for BTL)

• Fixed gain

• Good ripple rejection

• Mode select switch (operating, mute and standby)

• AC and DC short-circuit safe to ground and VP

• Electrostatic discharge protection

• Thermal protection

• Reverse polarity safe

• Capable of handling high energy on outputs (VP ​​= 0 V)

• No switch-on/switch-off plop

• Low thermal resistance.

figure 1. TDA1517ATW block diagram

figure 2. TDA1517ATW BTL Application Block Diagram

image 3. TDA1517ATW SE Application Block Diagram

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