LM4666
FEATURES
- 2 No Output Filter Required for Inductive Transducers
- Selectable Gain of 6d B or 12d B
- Very Fast Turn On Time: 6ms (typ)
- Minimum External ponents
- "Click and Pop" Suppression Circuitry
- Micro-Power Shutdown Mode
- Short Circuit Protection
- Available in Space-Saving NHK0014A Package
APPLICATIONS
- Mobile Phones
- PDAs
- Portable Electronic Devices
KEY SPECIFICATIONS
- Efficiency at 3V, 100m W into 8Ω Transducer: 79% (typ)
- Efficiency at 3V, 450m W into 8Ω Transducer: 84% (typ)
- Efficiency at 5V, 1W into 8Ω Transducer: 85% (typ)
- Total Quiescent Power Supply Current: 7.0m A (typ)
- Total Shutdown Power Supply Current: 0.02µA (typ)
- Single supply range: 2.8V to 5.5V
DESCRIPTION
The LM4666 is a fully integrated single-supply high efficiency switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces parts count, simplifies circuit design, and reduces...
