GENERAL DEscriptION
The SGM4863 is a dual bridge-connected audio power amplifier which operates from 2.8V to 5.5V supply voltage. It can deliver 2.5W into a 3Ω load or 2.1W into a 4Ω load from 5V supply at THD+N = 1%. It is designed for portable applications. When driving stereo headphones, the amplifiers can operate in single-ended mode at the headphone input pin.
The SGM4863 integrates dual bridge speaker amplifier and stereo headphone amplifier on one chip to simplify design.
The SGM4863 has pop/click suppression circuitry, low power consumption shutdown mode and thermal shutdown protection.
The SGM4863 is available in Green TSSOP-20 (Exposed Pad), TQFN-3×3-20L, TSSOP-16 (Exposed Pad), SOIC-16 and DIP-16 packages. It operates over an ambient temperature range of -40℃ to +85℃.
FEATURES
Supply Voltage Range: 2.8V to 5.5V
2.5W into 3Ω Load from 5V Power Supply at THD+N = 1% (Typical, per Channel)
2.1W into 4Ω Load from 5V Power Supply at THD+N = 1% (Typical, per Channel)
1.3W into 8Ω Load from 5V Power Supply at THD+N = 1% (Typical, per Channel)
Shutdown Current: 0.03μA (TYP)
Stereo Headphone Amplifier Mode
Pop/Click Suppression Circuitry
Unity-Gain Stable
Thermal Shutdown Protection
-40℃ to +85℃ Operating Temperature Range
Available in Green TSSOP-20 (Exposed Pad), TQFN-3×3-20L, TSSOP-16 (Exposed Pad), SOIC-16 and DIP-16 Packages
APPLICATIONS
TVs
Multimedia Monitors
Portable and Desktop Computers