LM4674A
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 Package
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%
2.5W (typ)
- Power Output at VDD = 5V, RL = 8Ω, THD ≤ 10%
1.5W (typ)
- Shutdown Current 0.1μA (typ)
DESCRIPTION
The LM4674A 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 LM4674A is designed to meet the...
