LM48580是TI公司的一款扬声器放大器（压电式）产品，LM48580是高效 H 类、高电压、触觉压电致动器/陶瓷扬声器驱动器，本页介绍了LM48580的产品说明、应用、特性等，并给出了与LM48580相关的TI元器件型号供参考。
LM48580 - 高效 H 类、高电压、触觉压电致动器/陶瓷扬声器驱动器 - 扬声器放大器（压电式） - 低功耗放大器 - TI公司（Texas Instruments，德州仪器）
The LM48580 is a fully differential, high voltage driver for piezo actuators and ceramic speakers for portable multi-media devices. Part of TI’s Powerwise product line, the LM48580’s Class H architecture offers significant power savings compared to traditional Class AB amplifiers. The device provides 30VP-P output drive while consuming just 15mW of quiescent power.
The LM48580 is a single supply driver with an integrated boost converter which allows the device to deliver 30VP-P from a single 3.6V supply.
The LM48580 has three pin-programmable gain settings and a low power Shutdown mode that reduces quiescent current consumption to 0.1µA. The LM48580 is available in an ultra-small 12-bump DSBGA package (1.46mm x 1.97mm).
- Class H Driver
- Integrated Boost Converter
- Bridge-tied Load Output
- Differential Input
- Three Pin-Programmable Gains
- Low Supply Current
- Minimum External components
- Micro-Power Shutdown
- Thermal Overload Protection
- Available in Space-Saving 12-bump DSBGA package
Key Specifications
- Output Voltage at VDD = 3.6V, RL = 6μF+10?, THD+N ≤ 1%
- 30VP-P (Typ)
- Quiescent Power Supply Current at 3.6V
- 2.7mA (Typ)
- Power Dissipation at 25VP-P
- 800mW (Typ)
- Shutdown Current
- 0.1μA (Typ)
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