LM4674
FEATURES
- 2 Output Short Circuit Protection
- Stereo Class D Operation
- No Output Filter Required
- Logic Selectable Gain
- Independent Shutdown Control
- Minimum External ponents
- Click and Pop Suppression
- Micro-Power Shutdown
- Available in Space-Saving 2mm x 2mm x
0.6mm DSBGA, and 4mm x 4mm x 0.8mm WQFN Packages
APPLICATIONS
- Mobile Phones
- PDAs
- Laptops
KEY SPECIFICATIONS
- Efficiency at 3.6V, 100m W into 8Ω: 80% (typ)
- Efficiency at 3.6V, 500m W into 8Ω: 85% (typ)
- Efficiency at 5V, 1W into 8Ω: 85% (typ)
- Quiescent Power Supply Current at 3.6V supply: 4m A
- Power Output at VDD = 5V,
RL = 4Ω, THD ≤ 10%: 2.5 W (typ)
- Shutdown Current: 0.03μA (typ)
DESCRIPTION
The LM4674 is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external ponent count, board area consumption, system cost, and simplifying design.
The LM4674 is designed to meet the demands of mobile phones and...
