GENERAL DESCRJPTION
The ft2011 is a high efficiency, low EMI, filterless
Class-D audio amplifier with auto-recovering
short-circuit protection. It operates from 2.7V to
5.5V supply. When powered with 5V voltage, the
ft2011 can deliver up to 3W into a 4Ω load or
1.8W into an 8Ω load at 10% THD+N.
As a Class-D audio amplifier, the ft2011 features
90% high 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
traditional Class-D audio amplifiers is it generates
much lower EMI emissions, thus greatly
simplifying the system design for use in portable
applications. Also included is the over-current or
short-circuit protection with auto-recovery, which
ensures the device be operated safely and
reliably without the need for system interruption.
The ft2011 is available in 1.5mmx1.5mm COL-9L,
MSOP-8L, and DFN2x2-8L package.
APPLICATIONS
? Mobile Phones
? Portable Digital Assistant (PDA)
? MP3/MP4 Player
FEATURES
? Filterless Class-D operation
? High efficiency up to 90%
? Output power at 5V supply
- 3.0W (4Ω load, 10% THD+N)
- 1.8W (8Ω load, 10% THD+N)
- 2.4W (4Ω load, 1% THD+N)
- 1.4W (8Ω load, 1% THD+N)
? Low THD+N: 0.05% (typical) @ 1kHz
(VDD=3.6V, RL=8Ω, PO=0.5W)
? Low quiescent current: 2mA at 3.6V (8Ω load)
? Extremely low shutdown current: 0.1μA (typical)
? High PSRR: 75dB (typical) at 217Hz
? No bypass capacitor required for the
common-mode bias
? Under-voltage lockout
? Auto recovering short-circuit protection
? Over-current & thermal overload protection
? Low EMI design
? Available in 1.5mmx1.5mm COL-9L, MSOP-8L,
and DFN2x2-8L packages
898995850
