LM48823 Datasheet | National Semiconductor

Description The LM48823 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium. The LM48823 charge pump allows the device to deliver 5.4VRMS from a single 4.2V supply. The LM48823 features high power supply rejection ratio (PSRR), 93d B at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.0V to 4.5V. The LM48823 features an active low reset input that reverts the device to its default state. Additionally, the LM48823 features a 32-step I2C volume control. The low power Shutdown mode reduces supply current consumption to 0.01µA. The LM48823’s superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48823 is available in an ultra-small 16-bump micro SMD package (2mmx2mm). Key Specifications -  Output Voltage at VDD = 4.2V, RL = 2.2µF + 15Ω THD+N ≤ 1% -  Quiescent Power Supply Current at 4.2V 3.3m A (typ) 93d B (typ) 0.01μA (typ) 5.4VRMS (typ) -  PSRR at 217Hz -  Shutdown current Features - - - - - - - - - - Integrated Charge Pump Bridge-tied Load Output High PSRR I2C Volume and Mode Control Reset Input Advanced Click-and-Pop Suppression Low Supply Current Minimum external ponents Micro-power shutdown Available in space-saving 16-bump µSMD package Applications - - - - Cell phones Smart phones Portable media devices Notebook PCs Boomer® is a registered trademark of National Semiconductor Corporation. Tru-GND is a trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation .national. .Data Sheet.in Typical Application 300684e1 FIGURE 1. Typical Audio Amplifier Application Circuit .national. .Data Sheet.in Connection Diagrams TL Package 2mm x 2mm x 0.8mm 16- Bump micro SMD Marking 300684g7 Top View XY - Date Code TT - Lot...