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LM4802BLQBD

Texas Instruments
Part Number LM4802BLQBD
Manufacturer Texas Instruments
Description Audio Power Amplifier
Published Aug 22, 2019
Detailed Description LM4802B, LM4802BLQBD www.ti.com SNAS243C – MAY 2004 – REVISED MARCH 2005 LM4802B Boomer™ Audio Power Amplifier Series...
Datasheet PDF File LM4802BLQBD PDF File

LM4802BLQBD
LM4802BLQBD

Overview
LM4802B, LM4802BLQBD www.
ti.
com SNAS243C – MAY 2004 – REVISED MARCH 2005 LM4802B Boomer™ Audio Power Amplifier Series Audio Power Amplifier with Boost Converter to Drive Ceramic Speakers Check for Samples: LM4802B, LM4802BLQBD FEATURES 1 •23 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 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) DESCRIPTION The LM4802B integrates a Boost Converter with an Audio Power Amplifier to drive Ceramic Speakers in portable applications.
When powered by a 3V supply, it is capable of forcing 12Vp-p across a 2μF + 30Ω bridge-tied-load (BTL) with less than 1% THD+N.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components.
The LM4802B does not require bootstrap capacitors, or snubber circuits.
Therefore it is ideally suited for portable applications requiring high output voltage and minimal size.
The LM4802B features a low-power consumption shutdown mode.
Additionally, the LM4802B features an internal thermal 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 LM4802B is unity-gain stable.
Its gain is set by external resistors.
Connection Diagram FB NC NC NC NC V1 SW Vo1 GND NC NC NC NC IN- NC NC NC VDD NC Shutdown 1 GND 28 27 26 25 24 23 22 1 21 2 20 3 19 4 18 5 17 6 16 7 15 8 9 10 11 12 13 14 IN+ GND Bypass Shutdown 2 Vo2 NC NC Figure 1.
LM4802BLQ (5x5) Top View See Package Number NJB0028A 1 Please be aware that an important notice conce...


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