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LM4802BLQNSN/a10000avaiAudio Power Amplifier with DC-DC converter to drive Ceramic Speakers
LM4802BLQXNSCN/a2625avaiAudio Power Amplifier with DC-DC converter to drive Ceramic Speakers


LM4802BLQ ,Audio Power Amplifier with DC-DC converter to drive Ceramic SpeakersApplicationsn Cellphonen PDAConnection DiagramLM4802BLQ (5x5)20094184Top ViewOrder Number LM4802BLQ ..
LM4802BLQX ,Audio Power Amplifier with DC-DC converter to drive Ceramic SpeakersElectrical Characteristics V = 4.2V (Notes 1, 2)DDThe following specifications apply for V = 4.2V, ..
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LM4808M/NOPB ,LM4808 Dual 105 mW Headphone Amplifier 8-SOIC -40 to 85ELECTRICAL CHARACTERISTICS (continued)The following specifications apply for V = 5V unless otherwis ..
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LP2975IMMX-5.0 ,MOSFET LDO Driver/ControllerApplications57 mV detection threshold of the current sense circuitry mini-n High-current 5V to 3.3V ..
LP2978AIM5-3.8 ,Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout RegulatorFeaturesn Ultra low dropout voltageThe LP2978 is a 50 mA, fixed-output voltage regulator de-signed ..
LP2978AIM5X-3.8 ,Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulatorapplications.n Requires minimum external components™Using an optimized VIP (Vertically Integrated P ..
LP2978IM5-3.8 ,Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout RegulatorBlock DiagramDS100935-1VIP™ is a trademark of National Semiconductor Corporation. 2000 National Sem ..
LP2978IM5X-3.8 ,Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout RegulatorElectrical CharacteristicsLimits in standard typeface are for T = 25˚C. and limits in boldface type ..
LP2978IM5X-3.8 ,Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout RegulatorApplicationsSmallest Possible Size: SOT-23 package uses absoluten Cellular Phoneminimum board space ..


LM4802BLQ-LM4802BLQX
Audio Power Amplifier with DC-DC converter to drive Ceramic Speakers
LM4802B
Audio Power Amplifier with Boost Converter to Drive
Ceramic Speakers
General Description

The LM4802B integratesa Boost Converter withan Audio
Power Amplifierto drive Ceramic Speakersin portable ap-
plications. When poweredbya3V supply,itis capableof
forcing 12Vp-p acrossa 2µF+ 30Ω bridge-tied-load (BTL)
with less than1% THD+N.
Boomer audio power amplifiers were designed specificallyto
provide high quality output power witha minimal amountof
external components. The LM4802B does not require boot-
strap capacitors,or snubber circuits. Thereforeitis ideally
suitedfor portable applications requiring high output voltage
and minimal size.
The LM4802B featuresa low-power consumption shutdown
mode. Additionally, the LM4802B featuresan internal ther-
mal shutdown protection mechanism.
The LM4802B contains advanced pop& click circuitry that
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4802Bis unity-gain stable.Its gainissetby external
resistors.
Key Specifications
Quiescent Power Supply Current 12mA (typ) BTL Voltage Swing
(2µF+ 30Ω load, 1% THD+N,
VDD= 3V) 12Vp-p (typ) Shutdown Current 2µA (max)
Features
Pop& click circuitry eliminates noise during turn-on and
turn-off transitions Low, 2µA (max) shutdown current Low, 12mA (typ) quiescent current 12Vp-p mono BTL output, load= 2µF+ 30Ω,VDD =3V Short circuit protection Unity-gain stable External gain configuration capability
Applications
Cellphone PDA
Connection Diagram
LM4802BLQ (5x5)

Top View
Order Number LM4802BLQ
SeeNS Package Number 2LQAQ028
November 2004
Audio
Power
Amplifier
with
Boost
Converter
Drive
Ceramic
Speakers
ic,good price


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