LM4951A Datasheet | Texas Instruments

FEATURES - 23 Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions - Wide Supply Voltage Range: 2.7V to 9V - Low Current, Active-Low Shutdown Mode - Low Quiescent Current - Thermal Shutdown Protection - Short Circuit Protection - Unity-Gain Stable - External Gain Configuration Capability APPLICATIONS - Portable Devices - Cell Phones - Laptop puters - puter Speaker Systems - MP3 Player Speakers KEY SPECIFICATIONS - Wide Voltage Range 2.7V to 9V - Quiescent Power Supply Current (VDD = 7.5V) 2.5m A (typ) - Power Output BTL at 7.5V, 1% THD 1.8 W (typ) - Shutdown Current 0.01µA (typ) - Fast Turn on Time 25ms (typ) DESCRIPTION The LM4951A is an audio power amplifier designed for applications with supply voltages ranging from 2.7V up to 9V. The LM4951A is capable of delivering 1.8W continuous average power with less than 1% THD+N into a bridge connected 8Ω load when operating from a 7.5VDC power supply. Boomer™ audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external ponents. The LM4951A does not require bootstrap capacitors, or snubber circuits. The LM4951A features a low-power consumption active-low shutdown mode. Additionally, the LM4951A features an internal thermal shutdown protection mechanism and short circuit protection. The LM4951A contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4951A is unity-gain stable and can be configured by external gain-setting resistors. 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. Boomer is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to...