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LA4743B - 45 W Four-Channel (Bridge Circuit) Power Amplifier

Key Features

  • a built-in bridge circuit and the ability to radically reduce the number of external components required. It is also pin compatible with the LA4743A, which differs in the amount of gain provided. Package Dimensions unit: mm 3236-HZIP25 [LA4743B] 29.2 25.6 4.5 Features.
  • Maximum output power: 45 W × 4 channels (VCC = 14.4 V, 4 Ω load, 1 kHz).
  • 40 W × 4 channels (VCC = 13.7 V, 4 Ω load, 1 kHz).
  • Requires only seven external components and does not require an oscillation p.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Ordering number : ENN6630 Monolithic Linear IC LA4743B 45 W Four-Channel (Bridge Circuit) Power Amplifier Overview The LA4743B is a 45 W 4-channel power amplifier IC for car stereo systems. It features a built-in bridge circuit and the ability to radically reduce the number of external components required. It is also pin compatible with the LA4743A, which differs in the amount of gain provided. Package Dimensions unit: mm 3236-HZIP25 [LA4743B] 29.2 25.6 4.5 Features • Maximum output power: 45 W × 4 channels (VCC = 14.4 V, 4 Ω load, 1 kHz) • 40 W × 4 channels (VCC = 13.7 V, 4 Ω load, 1 kHz) • Requires only seven external components and does not require an oscillation prevention RC circuit, a noise filter, or a BS capacitor. R1.7 14.4 17.4 3.3 10.2 0.4 4.0 4.0 2.60 2.0 (1.0) 2.0 0.