LM48560

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM48560 SNAS513F – AUGUST 2011 – REVISED NOVEMBER 2015 LM48560 Boomer™ Audio Power Amplifier Series High Voltage Class H Ceramic Speaker Driver With Automatic Level Control 1 Features 1 Class H Topology Integrated Boost Converter Bridge-Tied Load (BTL) Output Selectable Differential Inputs Selectable Control Interfaces – (Hardware or Software mode) I2C Programmable ALC Low Supply Current Minimum External Components Micro-Power Shutdown Available in Space-Saving DSBGA Package Key Specifications: – Output Voltage at VDD = 3.6 V, RL = 1.5 μF + 10 Ω, THD+N ≤ 1% – 30 VP-P (Typical) – Quiescent Power Supply Current at 3.6 V (ALC Enabled) – 4 mA (Typical) – Power Dissipation at 25 VP-P, 1 W (Typical) – Shutdown Current, 0.1 μA (Typical) 2 Applications Touch Screen Smart Phones Tablet PCs Portable Electronic Devices MP3 Players 3 Description The LM48560 device is a high voltage, high efficiency, Class H driver for ceramic speakers and piezo actuators. The LM48560 device’s Class H architecture offers significant power savings compared to traditional Class AB amplifiers. The device provides 30 VP-P output drive while consuming just 4 mA of quiescent current from a 3.6 V supply. The LM48560 device features TI’s unique automatic level control (ALC) that provides output limiter functionality. The LM48560 device features two fully differential inputs with separate gain s...