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LM48580 データシート

部品番号 コンポーネント説明 メーカー
LM48580 Boomer® Audio Power Amplifier Series High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver National-Semiconductor
National ->Texas Instruments National-Semiconductor
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General Description
The LM48580 is a fully differential, high voltage driver for piezo actuators and ceramic speakers for portable multi-media devices. Part of National’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.

Features
■ 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 microSMD package

Applications
■ Touch screen Smart Phones
■ Tablet PCs
■ Portable Electronic Devices
■ MP3 Players

Key Specifications
■ Output Voltage at VDD = 3.6V
RL = 6μF+10Ω, 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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