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LM4951A bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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LM4951A bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 23 page LM4951A www.ti.com SNAS453B – AUGUST 2008 – REVISED SEPTEMBER 2008 LM4951A Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection Check for Samples: LM4951A 1 FEATURES DESCRIPTION The LM4951A is an audio power amplifier designed 23 • Pop & Click Circuitry Eliminates Noise During for applications with supply voltages ranging from Turn-On and Turn-Off Transitions 2.7V up to 9V. The LM4951A is capable of delivering • Wide Supply Voltage Range: 2.7V to 9V 1.8W continuous average power with less than 1% • Low Current, Active-Low Shutdown Mode THD+N into a bridge connected 8 Ω load when operating from a 7.5VDC power supply. • Low Quiescent Current Boomer™ audio power amplifiers were designed • Thermal Shutdown Protection specifically to provide high quality output power with a • Short Circuit Protection minimal amount of external components. The • Unity-Gain Stable LM4951A does not require bootstrap capacitors, or • External Gain Configuration Capability snubber circuits. The LM4951A features a low-power consumption APPLICATIONS active-low shutdown mode. Additionally, the LM4951A features an internal thermal shutdown • Portable Devices protection mechanism and short circuit protection. • Cell Phones The LM4951A contains advanced pop & click circuitry • Laptop Computers that eliminates noises which would otherwise occur • Computer Speaker Systems during turn-on and turn-off transitions. • MP3 Player Speakers The LM4951A is unity-gain stable and can be configured by external gain-setting resistors. KEY SPECIFICATIONS • Wide Voltage Range 2.7V to 9V • Quiescent Power Supply Current (VDD = 7.5V) 2.5mA (typ) • Power Output BTL at 7.5V, 1% THD 1.8 W (typ) • Shutdown Current 0.01µA (typ) • Fast Turn on Time 25ms (typ) 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 © 2008, 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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Mô tả tương tự - LM4951A_14 |
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