Part # LM4960 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM4960 Boomer ® Audio Power Amplifier Series Piezoelectric Speaker Driver

Part Details:

LM4960 April 2005 Piezoelectric LM4960Piezoelectric Speaker DriverGeneral Description Key Specifications The LM4960 utilizes a switching regulator to drive a dual n V @ V = 3.0 THD+N 1% 24V (typ) OUT DD P-P audio power amplifier. It delivers 24V mono-BTL to a P-P n Power supply range 3.0 to 7V ceramic speaker with less than 1.0% THD+N while operating n Switching Frequency 1.6MHz (typ) Speaker on a 3.0V power supply. The LM4960 s switching regulator is a current-mode boost Features converter operating at a fixed frequency of 1.6MHz. n Low current shutdown mode Boomer audio power amplifiers were designed specifically to n "Click and pop" suppression circuitry provide high quality output power with a minimal amount of n Low Quiescent current external components. The LM4960 does not require output Driver n Unity-gain stable audio amplifiers coupling capacitors or bootstrap capacitors, and therefore isideally suited for mobile phone and other low voltage appli- n External gain configuration capability cations where minimal power consumption is a primary re- n Thermal shutdown protection circuitry quirement. n Wide input voltage range (3.0V - 7V) The LM4960 features a low-power consumption externally n 1.6MHz switching frequency controlled micropower shutdown mode. Additionally, theLM4960 features and internal thermal shutdown protection Applications mechanism along with a short circuit protection. n Mobile phone The LM4960 is unity-gain stable and can be configured by n PDA s external gain-setting resistors. Connection Diagram LM4960SQ 20076582 Top View Order Number LM4960SQ

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LM4960.pdf Datasheet