Datasheet Texas Instruments LM4992 — 数据表

LM4992, LM4992SDBD
www.ti.com SNAS220B – NOVEMBER 2003 – REVISED MAY 2013 LM4992 420mW Stereo Cell Phone Audio Amplifier
Check for Samples: LM4992, LM4992SDBD FEATURES DESCRIPTION The LM4992 is a stereo audio power amplifier
primarily designed for demanding applications in
mobile phones and other portable communication
device applications. It is capable of delivering 1 watt,
per channel, of continuous average power to an 8Ω
BTL load with less than 1% distortion (THD+N) from
a 5VDC power supply. 1 2 Available in Space-Saving WSON Package
Ultra Low Current Shutdown Mode
BTL Output Can Drive Capacitive Loads
Improved Click and Pop Circuitry Eliminates
Noise During Turn-On and Turn-Off
Transitions
2.2 -5.5V Operation
No Output Coupling Capacitors, Snubber
Networks or Bootstrap Capacitors Required
Unity-Gain Stable
External Gain Configuration Capability APPLICATIONS The LM4992 features independent shutdown control
for each channel and a low-power consumption
shutdown mode, which is achieved by driving both
shutdown pins with logic low. Additionally, the
LM4992 features an internal thermal shutdown …