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LM4960 数据表(PDF) 1 Page - Texas Instruments |
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LM4960 数据表(HTML) 1 Page - Texas Instruments |
1 / 20 page LM4960 www.ti.com SNAS221C – OCTOBER 2004 – REVISED MAY 2013 LM4960 Piezoelectric Speaker Driver Check for Samples: LM4960 1 FEATURES DESCRIPTION The LM4960 utilizes a switching regulator to drive a 23 • Low Current Shutdown Mode dual audio power amplifier. It delivers 24VP-P mono- • "Click and Pop" Suppression Circuitry BTL to a ceramic speaker with less than 1.0% • Low Quiescent Current THD+N while operating on a 3.0V power supply. • Unity-Gain Stable Audio Amplifiers The LM4960's switching regulator is a current-mode • External Gain Configuration Capability boost converter operating at a fixed frequency of 1.6MHz. • Thermal Shutdown Protection Circuitry Boomer™ audio power amplifiers were designed • Wide Input Voltage Range (3.0V - 7V) specifically to provide high quality output power with a • 1.6MHz Switching Frequency minimal amount of external components. The LM4960 does not require output coupling capacitors APPLICATIONS or bootstrap capacitors, and therefore is ideally suited • Mobile Phone for mobile phone and other low voltage applications where minimal power consumption is a primary • PDA's requirement. KEY SPECIFICATIONS The LM4960 features a low-power consumption externally controlled micropower shutdown mode. • VOUT @ VDD = 3.0 THD+N ≤ 1%: 24 VP-P (typ) Additionally, the LM4960 features and internal • Power Supply Range: 3.0 to 7 V thermal shutdown protection mechanism along with a short circuit protection. • Switching Frequency: 1.6 MHz (typ) The LM4960 is unity-gain stable and can be configured by external gain-setting resistors. Connection Diagram Figure 1. 28-Pin WQFN (Top View) See RSG0028A Package 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Boomer is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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类似说明 - LM4960 |
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