LM48580 High Efficiency Class H, High
Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver
LM48580
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 ...