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LM4853 Dataheets PDF



Part Number LM4853
Manufacturers National Semiconductor
Logo National Semiconductor
Description Mono 1.5W / Stereo 300mW Power Amplifier
Datasheet LM4853 DatasheetLM4853 Datasheet (PDF)

LM4853 Mono 1.5 W / Stereo 300mW Power Amplifier January 2003 LM4853 Mono 1.5 W / Stereo 300mW Power Amplifier General Description The LM4853 is an audio power amplifier capable of delivering 1.5W (typ) of continuous average power into a mono 4Ω bridged-tied load (BTL) with 1% THD+N or 95mW per channel of continuous average power into stereo 32Ω singleended (SE) loads with 1% THD+N, using a 5V power supply. The LM4853 can automatically switch between mono BTL and stereo SE modes utilizing a he.

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LM4853 Mono 1.5 W / Stereo 300mW Power Amplifier January 2003 LM4853 Mono 1.5 W / Stereo 300mW Power Amplifier General Description The LM4853 is an audio power amplifier capable of delivering 1.5W (typ) of continuous average power into a mono 4Ω bridged-tied load (BTL) with 1% THD+N or 95mW per channel of continuous average power into stereo 32Ω singleended (SE) loads with 1% THD+N, using a 5V power supply. The LM4853 can automatically switch between mono BTL and stereo SE modes utilizing a headphone sense pin. It is ideal for any system that provides both a monaural speaker output and a stereo line or headphone output Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4853 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4853 features an externally controlled, micropower consumption shutdown mode and thermal shutdown protection. The unity-gain stable LM4853’s gain is set by external gain-setting resistors Key Specifications n n n n n n n n n n Output Power at 1% THD+N, 1kHz: LM4853LD 3Ω BTL LM4853LD 4Ω BTL LM4853MM 4Ω BTL LM4853MM,LD 8Ω BTL LM4853MM,LD 8Ω SE LM4853MM,LD 32Ω SE THD+N at 1kHz, 95mW into 32Ω SE Single Supply Operation Shutdown Current 1.9W (typ) 1.7W (typ) 1.5W (typ) 1.1W (typ) 300mW (typ) 95mW (typ) 1% (typ) 2.4 to 5.5V 18µA (typ) Features n n n n n n n Mono 1.5W BTL or stereo 300mW output Headphone sense “Click and pop” suppression circuitry No bootstrap capacitors required Thermal shutdown protection Unity-gain stable Available in space-saving MSOP and LLP packaging Applications n n n n Portable computers Desktop computers PDA’s Handheld games Connection Diagrams 20033429 Top View 10 Lead MSOP Order Number LM4853MM See NS Package Number MUB10A 20033428 Top View 14 Lead LLP Order Number LM4853LD See NS Package Number LDA14A Boomer ® is a registered trademark of National Semiconductor Corporation. © 2003 National Semiconductor Corporation DS200334 www.national.com LM4853 Typical Application 20033431 FIGURE 1. Typical Audio Amplifier Application Circuit www.national.com 2 LM4853 Absolute Maximum Ratings (Note 2) Thermal Resistance θJA (typ) — MUB10A θJC (typ) — MUB10A θJA (typ) — LDA14A (Note 10) θJC (typ) — LDA14A 194˚C/W 52˚C/W 56˚C/W 4.3˚C/W If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature ESD Susceptibility (Note 4) ESD Machine model (Note 7) Junction Temperature (TJ) Solder Information (Note 1) Small Outline Package Vapor Phase (60 sec.) Infrared (15 sec.) 215˚C 220˚C 6.0V −65˚C to +150˚C 3.5kV 250V 150˚C Operating Ratings (Note 2) Temperature Range −40˚C ≤ to 85˚C Supply Voltage VDD 2.4V ≤ VDD ≤ 5.5V Note 1: See AN-450 "Surface Mounting and their effects on Product Reliability" for other methods of soldering surface mount devices. Electrical Characteristics (Notes 2, 8) The following specifications apply for VDD= 5.0V, TA= 25˚C unless otherwise specified. Symbol Parameter Conditions LM4853 Typical (Note 5) VDD IDD ISD VOS PO Supply Voltage Supply Current Shutdown Current Output Offset Voltage Output Power BTL Mode; VIN = 0V; IO = 0A SE Mode; VIN = 0V; IO = 0A SD Mode; VSHUTDOWN = VDD BTL Mode; AV = 2 BTL OUT+ to BTL OUT− BTL Mode; RL = 3Ω THD+N = 1%; LM4853LD BTL Mode; RL = 4Ω THD+N = 1%; LM4853LD BTL Mode; RL = 4Ω THD+N = 1%; LM4853MM BTL Mode; RL = 8Ω THD+N = 1%; LM4853MM, LD SE Mode; RL = 8Ω THD+N = 1%; LM4853MM, LD SE Mode; RL = 32Ω THD+N = 1%; LM4853MM, LD VIH VIL Shutdown Input Voltage High Shutdown Input Voltage Low Is < 80µA Is > 0.5mA SE Mode, RL = 32Ω; f = 1kHz 73 2.4 2.4 18 5.0 1.9 1.7 1.5 1.1 300 95 2.0 0.8 40 Limit (Note 6) 2.4 5.5 7.0 7.0 Units (Limits) V (min) V (max) mA mA µA mV W W W W mW mW V (min) V (max) dB Crosstalk Channel Seperation 3 www.national.com LM4853 Electrical Characteristics (Notes 2, 8) The following specifications apply for VDD= 3.3V, TA= 25˚C unless otherwise specified. Symbol Parameter Conditions LM4853 Typical (Note 5) IDD ISD VOS PO Supply Current Shutdown Current Output Offset Voltage Output Power BTL Mode; VIN = 0V; IO = 0A SE Mode; VIN = 0V; IO = 0A SD Mode; VSHUTDOWN = VDD BTL Mode; AV = 2 BTL OUT+ to BTL OUT− BTL Mode; RL = 8Ω THD+N = 1% SE Mode; RL = 32Ω THD+N = 1% VIH VIL Shutdown Input Voltage High Shutdown Input Voltage Low Is < 80µA Is > 0.5mA 2.0 2.0 12 5.0 440 40 2.0 0.8 40 Limit (Note 6) Units (Limits) mA mA µA mV mW mW V (min) V (max) Electrical Characteristics (Notes 2, 8) The following specifications apply for VDD= 2.7V, TA= 25˚C unless otherwise specified. Symbol Parameter Conditions LM4853 Typical (Note 5) IDD ISD VOS PO Supply Current Shutdown Current Output Offset Voltage Output Power BTL Mode; VIN = 0V; IO = 0A SE Mode; VIN = 0V; IO = 0A SD Mode; VSHUTDOWN = VDD BTL Mode; AV = 2 B.


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