LM4838MTEX/NOPB ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain 28-HTSSOP -40 to 85features an externally controlled, low-power consumption shutdown mode, and both a• Portable Radios ..
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LP2981-28DBVR ,100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN
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LP2981-33DBVR ,100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN
LM4838MTEX/NOPB
Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4838
www.ti.com SNAS131F –JANUARY 2001–REVISED MARCH 2013
LM4838 Stereo 2W Audio Power Amplifiers
with DC Volume Control and Selectable Gain
Checkfor Samples: LM4838
1FEATURES DESCRIPTIONThe LM4838isa monolithic integrated circuit that
23• DC Volume Control Interface provides DC volume control, and stereo bridged
• System Beep Detect audio power amplifiers capableof producing 2W into
Stereo Switchable Bridged/Single-Ended 4Ω with less than 1.0% THDor 2.2W into 3Ω with
Power Amplifiers less than 1.0% THD (see Notes below).
Selectable Internal/External Gain and Bass Boomer™ audio integrated circuits were designed
Boost specifically to provide high quality audio while
requiringa minimum amountof external components.
• “Click and Pop” Suppression Circuitry The LM4838 incorporatesa DC volume control,
• Thermal Shutdown Protection Circuitry stereo bridged audio power amplifiers and a
selectable gain or bass boost, makingit optimally
APPLICATIONS suited for multimedia monitors, portable radios,
desktop, and portable computer applications.
• Portable and Desktop Computers Multimedia Monitors The LM4838 features an externally controlled, low-
power consumption shutdown mode, and botha
• Portable Radios, PDAs, and Portable TVs power amplifier and headphone mute for maximum
system flexibility and performance.
Note: When properly mountedto the circuit board,
the LM4838NJB, LM4838PWP, and LM4838NYC will
deliver 2W into 4Ω. The LM4838PW and LM4838YZR
will deliver 1.1W into 8Ω. See Application Information
section Exposed-DAP package PCB Mounting
Considerations for more information.
Note: An LM4838NJB and LM4838PWP that have
been properly mounted to the circuit board and
forced-air cooled will deliver 2.2W into 3Ω.
Table1. Key Specifications
