LM4673
FEATURES
- 2 Mono Class D Operation
- No Output Filter Required for Inductive Loads
- Externally Configurable Gain
- Very Fast Turn On Time: 17μs (typ)
- Minimum External ponents
- "Click and Pop" Suppression Circuitry
- Micro-Power Shutdown Mode
- Available in Space-Saving 0.4mm Pitch
DSBGA and WSON Packages
APPLICATIONS
- Mobile Phones
- PDAs
- Portable Electronic Devices
KEY SPECIFICATIONS
- Efficiency at 3.6V, 400m W into 8Ω Speaker 88% (typ)
- Efficiency at 3.6V, 100m W into 8Ω Speaker 80% (typ)
- Efficiency at 5V, 1W into 8Ω Speaker 86% (typ)
- Quiescent Current, 3.6V Supply 2.1m A (typ)
- Total Shutdown Power Supply Current
0.01µA (typ)
- Single Supply Range 2.4V to 5.5V
- PSRR, f = 217Hz 78d B
DESCRIPTION
The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external ponent count, board area consumption, system cost, and simplifying design.
The LM4673 is designed to...
