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LM4673SD

Audio Power Amplifier, 2.65 W, D, 1 Channel, 2.4V to 5.5V, LLP, 8 Pins

TEXAS INSTRUMENTS LM4673SD

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Manufacturer Part No:
LM4673SD
Order Code:
1312767

Product Overview

The LM4673SD is a single supply high efficiency mono class D Audio Amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption and simplifying design. The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4R speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4 to 5.5V. The LM4673 has high efficiency with speaker loads compared to a typical class AB amplifier. With a 3.6V supply driving a 8R speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power. The LM4673 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the shutdown pin to a logic low (GND).
  • No output filter required for inductive loads
  • Externally configurable gain
  • Minimum external components
  • Click and pop suppression circuitry
  • Micro-power shutdown mode
  • 17µs (typical) Very fast turn on time
  • 0.01µA (typical) Total shutdown power supply current
  • Green product and no Sb/Br

Applications

Audio, Consumer Electronics, Portable Devices

Product Information

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:
2.65W

:
D

:
1 Channel

:
2.4V to 5.5V

:
LLP

:
8Pins

:
4ohm

:
-40°C

:
85°C

:
-

:
-

:
-
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