LM48557
- Integrated Charge Pump
- Bridge-Tied Load Output
- Differential Input
- High PSRR
- I2C Volume and Mode Control
- Reset Input
- Advanced Click-and-Pop Suppression
- Low Supply Current
- Minimum External Components
- Micro-Power Shutdown
- Available in Space-Saving 16-Bump DSBGA Package
Key Specifications
- Output Voltage at VDD = 4.2V
- RL = 1µF +22Ω, THD+N ≤ 1%: 5.8 VRMS (Typ)
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The LM48557 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones and portable media players, where board space is at a premium. The LM48557 charge pump allows the device to deliver 5.8VRMS from a single 4.2V supply.
The LM48557 features high power supply rejection ratio (PSRR), 80dB at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.7V to 4.5V. The LM48557 features an active low reset input that reverts the device to its default state. Additionally, the LM48557 features a 36-step I2C volume control and mute function. The low power Shutdown mode reduces supply current consumption to 0.01µA.
The LM48557’s superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48557 is available in an ultra-small 16-bump DSBGA package (1.965mm x 1.965mm).
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Mono, Bridge-Tied Load, Ceramic Speaker Driver w/I2C Volume Control & Reset 数据表 (Rev. D) | 2013年 5月 2日 |
设计和开发
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封装 | 引脚 | 下载 |
---|---|---|
DSBGA (YPD) | 16 | 查看选项 |
DSBGA (YZR) | 16 | 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