Speaker Driver 12-Pin Micro SMD T/R

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

Output Voltage at V_DD = 3.6V, R_L = 6µF+10?, THD+N = 1%

• 30V_P-P (Typ)

Quiescent Power Supply Current at 3.6V

• 2.7mA (Typ)

Power Dissipation at 25V_P-P

• 800mW (Typ)

Shutdown Current

• 0.1µA (Typ)