LM4951A中文资料具有短路保护的 1.8W 单声道 2.7V 至 9V 模拟输入 AB 类音频放大器数据手册TI规格书

描述 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 components. 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.

特性 Features

• Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
• Low Current, Active-Low Shutdown Mode
• Thermal Shutdown Protection
• Unity-Gain Stable
• Wide Voltage Range 2.7V to 9V
• Power Output BTL at 7.5V, 1% THD 1.8 W (typ)
• Fast Turn on Time 25ms (typ)