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LM4680SD-LM4680SDX
10W High-Efficiency Mono BTL Audio Power Amplifier
LM4680
10W High-Efficiency Mono BTL Audio Power Amplifier
General DescriptionThe LM4680isa high efficiency switching audio power
amplifier primarily designedfor demanding applicationsin
flat panel monitors and TV’s.Itis capableof delivering 10Wan 8Ω mono BTL load with less than 10% distortion
(THD+N) when powered froma 14VDC power supply.
Boomer audio power amplifiers were designed specificallyto
provide high quality output power witha minimal amountof
external components. The LM4680 featuresa micro-power,
active-low shutdown mode,an internal thermal shutdown
protection mechanism, output fault detect, and short circuit
protection.
The LM4680 contains advanced transient (“pop and click”)
suppression circuitry that eliminates noises that would oth-
erwise occur during turn-on and turn-off transitions.
Key Specifications Power Output BTL (VDD= 14V,
fIN= 1kHz, THD+N= 10%, =8Ω) 10W (typ) Quiescent Power Supply Current 25mA (typ) Efficiency (VDD= 12V,fIN= 1kHz, =8Ω,POUT= 6W) 81% (typ) Shutdown Current 0.1mA (typ) Fixed Gain 30dB (typ)
Features Soft-start circuitry eliminates noise during turn-on
transition Low current shutdown mode Low quiescent current 6W BTL output,RL =8Ω, THD+N= 1% Short circuit protection Fixed, internallyset gainof 30dB Internal clamp diodes protect amplifier outputs
Applications Flat Panel Monitors Flat Panel TVs Computer Sound Cards
Connection Diagram
Plastic PackageTop View
Order Number LM4680SD
See NS Package Number SRC14A
January 2005
LM4680
10W
High-Efficiency
Mono
BTL
Audio
Power
Amplifier
