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KB4863 Datasheet, PDF (1/19 Pages) Kingbor Technology Co – Dual 2.2W Audio Amplifier Plus Stereo Headphone Function | |||
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KingborTechnologyCo.,Ltd
TEL:(86)0755-83095458 FAX:(86)0755-88364052
KB4863
KB4863
Dual 2.2W Audio Amplifier Plus Stereo Headphone
Function
General Description
The KB4863 is a dual bridge-connected audio power ampli-
fier which, when connected to a 5V supply, will deliver 2.2W
to a 4⦠load (Note 1) or 2.5W to a 3⦠load (Note 2) with less
than 1.0% THD+N. In addition, the headphone input pin
allows the amplifiers to operate in single-ended mode when
driving stereo headphones.
Boomer audio power amplifiers were designed specifically to
provide high quality output power from a surface mount
package while requiring few external components. To sim-
plify audio system design, the KB4863 combines dual bridge
speaker amplifiers and stereo headphone amplifiers on one
chip.
The KB4863 features an externally controlled, low-power
consumption shutdown mode, a stereo headphone amplifier
mode, and thermal shutdown protection. It also utilizes cir-
cuitry to reduce âclicks and popsâ during device turn-on.
Note 1: An KB4863MTE or KB4863LQ that has been properly mounted to
a circuit board will deliver 2.2W into 4â¦. The other package options for the
KB4863 will deliver 1.1W into 8â¦. See the Application Information sections
for further information concerning the KB4863MTE and KB4863LQ.
Note 2: An KB4863MTE or KB4863LQ that has been properly mounted to a
circuit board and forced-air cooled will deliver 2.5W into 3â¦.
Key Specifications
n PO at 1% THD+N
n KB4863LQ, 3â¦, 4⦠loads
2.5W(typ), 2.2W(typ)
n KB4863MTE, 3â¦, 4⦠loads
2.5W(typ), 2.2W(typ)
n KB4863MTE, 8⦠load
1.1W(typ)
n KB4863, 8â¦
1.1W(typ)
n Single-ended mode THD+N at 75mW into
32â¦
0.5%(max)
n Shutdown current
0.7µA(typ)
n Supply voltage range
2.0V to 5.5V
Features
n Stereo headphone amplifier mode
n âClick and popâ suppression circuitry
n Unity-gain stable
n Thermal shutdown protection circuitry
n SOIC, DIP, TSSOP and exposed-DAP TSSOP and LLP
packages
Applications
n Multimedia monitors
n Portable and desktop computers
n Portable televisions
Typical Application
Note: Pin out shown for DIP and SO packages. Refer to the Connection Diagrams for the pinout of the TSSOP, Exposed-DAP TSSOP, and Exposed-DAP
LLP packages.
Rev: 1.1
1/19
2005-12-05
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