LM48556 Datasheet | Texas Instruments

.ti. SNAS452B - JUNE 2008 - REVISED MAY 2013 LM48556 Boomer™ Fully Differential, Mono, Ceramic Speaker Driver Check for Samples: LM48556 Features - 23 Fully Differential Amplifier - Externally Configurable Gain - Integrated Charge Pump - Low Power Shutdown Mode - Soft Start Function APPLICATIONS - Mobile Phones - PDA's - Digital Cameras KEY SPECIFICATIONS - Output Voltage Swing - VDD = 3.6V, 1k Hz 14.2VPP (typ) - VDD = 4.5V, 1k Hz 17.5VPP (typ) - Power Supply Rejection Ratio - f = 217Hz, VDD = 3.6V 80d B (typ) - IDD at VDD = 3.6V 4.8m A (typ) - Wake-Up Time 0.5ms (typ) 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 DSBGA package (2mm x 1.5mm). Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Boomer is a trademark of Texas Instruments. All other trademarks are the property of their respective...