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LM4995SD/NOPB-LM4995TMX/NOPB
1.3W Audio Power Amplifier
LM4995, LM4995TMBD
www.ti.com SNAS329G–APRIL 2006–REVISED APRIL 2013
LM4995 1.3W Audio Power Amplifier
Checkfor Samples: LM4995, LM4995TMBD
1FEATURES DESCRIPTIONThe LM4995is an audio power amplifier primarily
Availablein Space-Saving 0.4mm Pitch designed for demanding applications in mobile
DSBGA Package phones and other portable communication device
• Ultra Low Current Shutdown Mode applications.It is capable of delivering 1.2W of
BTL Output Can Drive Capacitive Loads continuous average powerto an 8Ω BTL load with
less than 1% distortion (THD+N) froma 5VDC power
• Improved Click and Pop Circuitry Eliminates supply.
Noise during Turn-On and Turn-Off TransitionsBoomer audio power amplifiers were designed
• 2.4- 5.5V Operation specificallyto provide high quality output power witha
• No Output Coupling Capacitors, Snubber minimal amount of external components. The
Networksor Bootstrap Capacitors Required LM4995 does not require output coupling capacitors
Unity-Gain Stable or bootstrap capacitors, and thereforeis ideally suited
for mobile phone and other low voltage applications
• External Gain Configuration Capability where minimal power consumption isa primary
• WSON Package: 0.5mm Pitch,3x3 mm requirement.
The LM4995 featuresa low-power consumption
APPLICATIONSshutdown mode, whichis achieved by driving the
• Mobile Phones shutdown pin with logic low. Additionally, the LM4995
PDAs features an internal thermal shutdown protection
mechanism.
• Portable electronic devicesThe LM4995 contains advanced click and pop
KEY SPECIFICATIONS circuitry which eliminates noise which would
otherwise occur during turn-on and turn-off
• PSRRat 3.6V (217Hz& 1kHz):75 dB transitions.
• Output Powerat 5.0V, 1% THD+N, 8Ω:The LM4995 is unity-gain stable and can be
1.3W (typ) configuredby external gain-setting resistors.
• Output Powerat 3.6V, 1% THD+N, 8Ω:
625 mW (typ) Shutdown Current: 0.01µA (typ)
