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LM4876 Datasheet Preview

LM4876 Datasheet

1.1W Audio Power Amplifier

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LM4876
www.ti.com
SNAS054E – FEBRUARY 2000 – REVISED MAY 2013
LM4876
1.1W Audio Power Amplifier with Logic Low
Shutdown
Check for Samples: LM4876
FEATURES
1
2 Does Not Require Output Coupling Capacitors,
Bootstrap Capacitors, Or Snubber Circuits
• 10-pin VSSOP and 8-pin SOIC Packages
• Unity-Gain Stable
• External Gain Set
APPLICATIONS
• Mobile Phones
• Portable Computers
• Desktop Computers
• Low-Voltage Audio Systems
KEY SPECIFICATIONS
• THD+N at 1kHz for 1W Continuous Average
Output Power into 80.5% (max)
• Output Power At 1kHz Into 8with 10%
THD+N 1.5 W (typ)
• Shutdown Current 0.01µA (typ)
• Supply Voltage Range 2.0V to 5.5 V
DESCRIPTION
The LM4876 is a single 5V supply bridge-connected
audio power amplifier capable of delivering 1.1W (typ)
of continuous average power to an 8load with 0.5%
THD+N.
Like other audio amplifiers in the Boomer series, the
LM4876 is designed specifically to provide high
quality output power with a minimal amount of
external components. The LM4876 does not require
output coupling capacitors, bootstrap capacitors, or
snubber networks. It is perfectly suited for low-power
portable systems.
The LM4876 features an active low externally
controlled, micro-power shutdown mode. Additionally,
the LM4876 features an internal thermal shutdown
protection mechanism. For PCB space efficiency, the
LM4876 is available in VSSOP and SOIC surface
mount packages.
The unity-gain stable LM4876's closed loop gain is
set using external resistors.
Typical Application
Figure 1. Typical LM4876 Audio Amplifier Application Circuit
Numbers in ( ) are specific to the 10-pin VSSOP package.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2013, Texas Instruments Incorporated




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LM4876 Datasheet Preview

LM4876 Datasheet

1.1W Audio Power Amplifier

No Preview Available !

LM4876
SNAS054E – FEBRUARY 2000 – REVISED MAY 2013
Connection Diagrams
www.ti.com
Figure 2. VSSOP Package – Top View
See Package Number DGS
Figure 3. SOIC Package – Top View
See Package Number D
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings(1)(2)
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation(3)
ESD Susceptibility(4)
ESD Susceptibility(5)
Junction Temperature
Soldering Information
θJC (typ)—DGS
θJA (typ)—DGS
θJC (typ)—D
θJA (typ)—D
Small Outline Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
6.0V
65°C to +150°C
0.3V to VDD +0.3V
Internally Limited
2500V
250V
150°C
215°C
220°C
56°C/W
210°C/W
35°C/W
140°C/W
(1) If Military/Aerospace specified devices are required, please contact the Texas Instruments' Sales Office/ Distributors for availability and
specifications.
(2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions that ensure specific performance limits. This assumes that the device operates within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given. The typical value, however, is a good
indication of device performance.
(3) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature
TA. The maximum allowable power dissipation is PDMAX = (TJMAX–TA)/θJA or the number given in Absolute Maximum Ratings, whichever
is lower. For the LM4876, TJMAX = 150°C. The typical junction-to-ambient thermal resistance is 140°C/W for the D package and
210°C/W for the DGS package.
(4) Human body model, 100 pF discharged through a 1.5 kresistor.
(5) Machine Model, 220 pF–240 pF discharged through all pins.
Operating Ratings
Temperature Range
Supply Voltage
TMIN TA TMAX
40°C TA 85°
2.0V VDD 5.5V
2
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Product Folder Links: LM4876
Copyright © 2000–2013, Texas Instruments Incorporated



Part Number LM4876
Description 1.1W Audio Power Amplifier
Maker etcTI
Total Page 3 Pages
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LM4876 Datasheet PDF





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