方泰FT2011P短路保护自动恢复的低EMI干扰的D类功放可替代NS4150

方泰FT2011P短路保护自动恢复的低EMI干扰的D类功放可替代NS4150

GENERAL DESCRIPTION The ft2011 is a high efficiency, low EMI, filterless, Class-D audio amplifier with auto-recovering short-circuit protection. It operates from 3V to 5.5V supply. When powered with 5V supply voltage, the ft2011 is capable of delivering 3W into a 4Ω load or 1.8W into an 8Ω load, with 10% THD+N. As a Class-D audio amplifier, the ft2011 features 90% efficiency and 75dB PSRR at 217Hz which make the device ideal for battery-powered high-quality audio applications. One of the key benefits of the ft2011 over typical Class-D audio power amplifiers is it generates much less EMI emissions, thus greatly simplifying the system design for portable applications. Also included is the over-current and short-circuit protection with auto-recovery, which ensures the device be operated safely and reliably without the need for system interaction. APPLICATIONS ? Mobile Phones ? Portable Navigation Devices ? Multimedia Internet Devices ? Portable Speakers FEATURES ? Filterless Class-D operation ? High efficiency up to 90% ? Maximum output power at 5V supply 3.0W (4Ω load, 10% THD+N) 1.8W (8Ω load, 10% THD+N) ? Maximum output power at 3.6V supply 1.5W (4Ω load, 10% THD+N) 0.9W (8Ω load, 10% THD+N) ? Low THD+N: 0.05% (VDD=3.6V, f=1kHz, RL=8Ω, PO=0.5W) ? Low quiescent current: 2mA @ VDD=3.6V ? Low shutdown current < 0.1μA ? High PSRR: 75dB @ 217Hz ? No bypass capacitor required for the common-mode bias ? Under-voltage lockout ? Auto-recovering over-current and short-circuit protection ? Thermal overload protection ? Low EMI design ? Available in COL1.5x1.5-9L, SOP-8L,