LM4875
www.ti.com LM4875 SNAS042C – JANUARY 2002 – REVISED MAY 2013 750 mW Audio Power Amplifier with DC Volume
Control and Headphone Switch
Check for Samples: LM4875 FEATURES DESCRIPTION The LM4875 is a mono bridged audio power amplifier
with DC voltage volume control. The LM4875 is
capable of delivering 750mW of continuous average
power into an 8Ω load with less than 1% THD when
powered by a 5V power supply. Switching between
bridged speaker mode and headphone (single ended)
mode is accomplished using the headphone sense
pin. To conserve power in portable applications, the
LM4875's micropower shutdown mode (IQ = 0.7ВµA,
typ) is activated when less than 300mV is applied to
the DC Vol/SD pin. 1 2 Precision DC Voltage Volume Control
Headphone Amplifier Mode
“Click and Pop” Suppression
Shutdown Control When Volume Control Pin Is
Low
Thermal Shutdown Protection APPLICATIONS GSM Phones and Accessories, DECT, Office
Phones
Hand Held Radio
Other Portable Audio Devices Boomer audio power amplifiers are designed
specifically to provide high power audio output while …
