LM4667ITL/NOPB ,Filterless High Efficiency 1.3W Switching Audio Amplifier 9-DSBGA -40 to 85features anTransducersinnovative modulator that eliminates the LC output• Selectable Gain of 6dB or ..
LM4667ITLX ,Filterless High Efficiency 1.3W Switching Audio AmplifierFeaturesing on a single 3V supply, it is capable of driving 8Ω trans-n No output filter required fo ..
LM4667ITLX ,Filterless High Efficiency 1.3W Switching Audio AmplifierApplicationsTheLM4667hasshortcircuitprotectionagainstashortfromn Mobile phonesthe outputs to V , GN ..
LM4667ITLX ,Filterless High Efficiency 1.3W Switching Audio AmplifierApplicationsTheLM4667hasshortcircuitprotectionagainstashortfromn Mobile phonesthe outputs to V , GN ..
LM4667MM ,Filterless High Efficiency 1.3W Switching Audio Amplifierfeaturesaninnovativemodulatorj Efficiency at 3V, 450mW into 8Ω transducer 84% (typ)thateliminatesth ..
LM4667MMX ,Filterless High Efficiency 1.3W Switching Audio AmplifierGeneral Description Key SpecificationsTheLM4667isafullyintegratedsingle-supplyhighefficiencyj Effic ..
LP2960IM-3.3 ,Adjustable Micropower 0.5A Low-Dropout RegulatorsLP2960 Adjustable Micropower 0.5A Low-Dropout RegulatorsApril 2002LP2960Adjustable Micropower 0.5A ..
LP2960IM-5.0 ,Adjustable Micropower 0.5A Low-Dropout RegulatorsElectrical Characteristics (continued)Limits in standard typeface are for T = 25°C, and limits in b ..
LP2960IM-5.0 ,Adjustable Micropower 0.5A Low-Dropout RegulatorsElectrical Characteristics Limits in standard typeface are for T = 25˚C, and limits in boldface typ ..
LP2960IMX-3.3 ,Adjustable Micropower 0.5A Low-Dropout RegulatorsBlock Diagram01196201 2002 National Semiconductor Corporation DS011962 Absolute Maximum Ratings (No ..
LP2960IMX-5.0 ,Adjustable Micropower 0.5A Low-Dropout RegulatorsBlock Diagram01196201 2002 National Semiconductor Corporation DS011962 Absolute Maximum Ratings (No ..
LP2960IN-3.3 ,Adjustable Micropower 0.5A Low-Dropout RegulatorsFeaturesn Output voltage adjusts from 1.23V–29VThe LP2960 is a micropower voltage regulator with ve ..
LM4667ITL/NOPB
Filterless High Efficiency 1.3W Switching Audio Amplifier 9-DSBGA -40 to 85
LM4667, LM4667MMBD
www.ti.com SNAS165C –SEPTEMBER 2003–REVISED MAY 2013
LM4667 Filterless High Efficiency 1.3W Switching Audio
Amplifier
Checkfor Samples: LM4667, LM4667MMBD
1FEATURES DESCRIPTIONThe LM4667isa fully integrated single-supply high
No Output Filter Required for Inductive efficiency switching audio amplifier.It features an
Transducers innovative modulator that eliminates the LC output
• Selectable Gainof 6dBor 12dB filter used with typical switching amplifiers.
Very Fast Turn on Time: 5ms (typ) Eliminating the output filter reduces parts count,
simplifies circuit design, and reduces board area. The
• Minimum External Components LM4667 processes analog inputs witha delta-sigma
• "Click and Pop" Suppression Circuitry modulation technique that lowers output noise and
Micro-Power Shutdown Mode THD when compared to conventional pulse width
modulators.
• Short Circuit Protection Space-Saving DSBGA and VSSOP Packages The LM4667is designedto meet the demandsof
mobile phones and other portable communication
devices. Operating ona single 3V supply,it is
KEY SPECIFICATIONS capable of driving 8Ω transducer loads at a
• Efficiencyat 3V, 100mW into 8Ω Transducer continuous average outputof 450mW with less than
74% (typ) 1%THD+N. Its flexible power supply requirements
allow operation from 2.7Vto 5.5V.
• Efficiencyat 3V, 450mW into 8Ω Transducer
84% (typ) The LM4667 has high efficiency with an 8Ω
Efficiencyat 5V, 1W into 8Ω Transducer 86% transducer load compared toa typical Class AB
(typ) amplifier. Witha 3V supply, the IC's efficiency fora
100mW power levelis 74%, reaching 84%at 450mW
• Total Quiescent Power Supply Current: 3.5mA output power.
(typ)The LM4667 featuresa low-power consumption
• Total Shutdown Power Supply Current: 0.01μA shutdown mode. Shutdown may be enabled by
(typ) driving the Shutdown pintoa logic low (GND).
• Single Supply Range: 2.7Vto 5.5VThe LM4667 has fixed selectable gainof either 6dB 12dB. The LM4667 has short circuit protection
APPLICATIONS againsta short from the outputsto VDD, GND,or across the outputs.
Devices