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LM48556 - Ceramic Speaker Driver

General Description

The LM48556 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium.

The LM48556 charge pump allows the device to deliver 17.5VPP (typ) from a single 4.5V supply.

Key Features

  • 1.
  • 23 Fully Differential Amplifier.
  • Externally Configurable Gain.
  • Integrated Charge Pump.
  • Low Power Shutdown Mode.
  • Soft Start Function.

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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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LM48556 www.ti.com SNAS452B – JUNE 2008 – REVISED MAY 2013 LM48556 Boomer™ Fully Differential, Mono, Ceramic Speaker Driver Check for Samples: LM48556 FEATURES 1 •23 Fully Differential Amplifier • Externally Configurable Gain • Integrated Charge Pump • Low Power Shutdown Mode • Soft Start Function APPLICATIONS • Mobile Phones • PDA's • Digital Cameras KEY SPECIFICATIONS • Output Voltage Swing – VDD = 3.6V, 1kHz 14.2VPP (typ) – VDD = 4.5V, 1kHz 17.5VPP (typ) • Power Supply Rejection Ratio – f = 217Hz, VDD = 3.6V 80dB (typ) • IDD at VDD = 3.6V 4.8mA (typ) • Wake-Up Time 0.5ms (typ) DESCRIPTION The LM48556 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium.