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.
Key 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.
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LM48580 High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver LM48580 February 23, 2010 High Efficiency Class H, High Voltage, Haptic Piez...
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0 February 23, 2010 High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver 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. The LM48580 is a single supply driver with an integrated boost converter which allows the device to deliver 30VP-P from a single 3
LM48580 Datasheet
