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LM4960 Datasheet Piezoelectric Speaker Driver

Manufacturer: National Semiconductor (now Texas Instruments)

General Description

The LM4960 utilizes a switching regulator to drive a dual audio power amplifier.

It delivers 24VP-P mono-BTL to a ceramic speaker with less than 1.0% THD+N while operating on a 3.0V power supply.

The LM4960’s switching regulator is a current-mode boost converter operating at a fixed frequency of 1.6MHz.

Overview

LM4960 Piezoelectric Speaker Driver October 2004 LM4960 Piezoelectric Speaker.

Key Features

  • a low-power consumption externally controlled micropower shutdown mode. Additionally, the LM4960 features and internal thermal shutdown protection mechanism along with a short circuit protection. The LM4960 is unity-gain stable and can be configured by external gain-setting resistors. Key Specifications n VOUT @ VDD = 3.0 THD+N ≤ 1% n Power supply range n Switching Frequency 24VP-P (typ) 3.0 to 7V 1.6MHz (typ) Features n n n n n n n n n Stereo BTL amplifier Low current shutdown mode "Click and.