LM48556 Datasheet | National Semiconductor

Description The LM48556 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 LM48556 charge pump allows the device to deliver 17.5VPP (typ) from a single 4.5V supply. Additionally, the charge pump features a soft start function that minimizes transient current during power-up. The LM48556 features high power supply rejection ratio (PSRR) of 80d B at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.7V to 5.0V. Additionally, the LM48556 features a differential input function and an externally configurable gain. A low power shutdown mode reduces supply current consumption to 0.1μA. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48556 is available in an ultra-small 12-bump micro SMD package (2mm x 1.5mm). Key Specifications -  Output Voltage Swing VDD = 3.6V, 1k Hz VDD = 4.5V, 1k Hz 14.2VPP (typ) 17.5VPP (typ) 80d B (typ) 4.8m A (typ) 0.5ms (typ) -  Power Supply Rejection Ratio f = 217Hz, VDD = 3.6V -  IDD at VDD = 3.6V -  Wake-Up Time Features - - - - - Fully differential amplifier Externally configurable gain Integrated charge pump Low power shutdown mode Soft start function Applications - Mobile phones - PDA's - Digital cameras Boomer® is a registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation .national. .Data Sheet.in Typical Application 300572d4 FIGURE 1. Typical Audio Amplifier Application Circuit .national. .Data Sheet.in Connection Diagrams 12 Bump micro SMD 300572d6 Top View Order Number LM48556TL, LM48556TLX See NS Package Number TLA121AA 12 Bump micro SMD Package View .national. .Data Sheet.in LM48556TL Marking 300572d5 Top View XY = Date Code TT = Lot...