LM4954
- No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
- Unity Gain Stable
- Externally Configurable Gain
- Ultra Low Current Active Low Shutdown Mode
- BTL Output can Drive Capacitive Loads Up to 100pF
- “Click and Pop” Suppression Circuitry
- 2.7V - 9.0V Operation
- Available in Space-Saving DSBGA Package
Key Specifications
- Wide Power Supply Voltage Range, 2.7 ≤ VDD ≤ 9V
- Output Power: VDD = 7V, 1% THD+N, 2.4W (Typ)
- Quiescent Power Supply Current, 3mA (Typ)
- PSRR: VDD = 5V and 3V at 217Hz, 80dB (Typ)
- Shutdown Power Supply Current, 0.01µA (Typ)
Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.
The LM4954 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 2.4 Watts of continuous average power to an 8Ω BTL load with less than 1% THD+N from a 7VDC power supply.
Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal number of external components. The LM4954 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.
The LM4954 features a low-power consumption global shutdown mode which is achieved by driving the shutdown pin with logic low. Additionally, the LM4954 features an internal thermal shutdown protection mechanism.
The LM4954 contains advanced pop & click circuitry which eliminates noises that would otherwise occur during turn-on and turn-off transitions.
The LM4954 is unity-gain stable and can be configured by external gain-setting resistors.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LM4954 High Voltage 3 Watt Audio Power Amplifier 数据表 (Rev. B) | 2013年 4月 8日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®
借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。
在 PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
封装 | 引脚 | 下载 |
---|---|---|
DSBGA (YZR) | 9 | 查看选项 |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点