LM4665
FEATURES
- 2 No Output Filter Required for Inductive Transducers
- Selectable Gain of 6d B (2V/V) or 12d B (4V/V)
- Very Fast Turn On Time: 5ms (typ)
- User Selectable Shutdown High or Low Logic
Level
- Minimum External ponents
- "Click and Pop" Suppression Circuitry
- Micro-Power Shutdown Mode
- Short Circuit Protection
- DSBGA, WSON, and VSSOP Packages (No
Heat Sink Required)
APPLICATIONS
- Mobile Phones
- PDAs
- Portable Electronic Devices
KEY SPECIFICATIONS
- Efficiency at 100m W into 8Ω Transducer 75%(typ)
- Efficiency at 400m W into 8Ω Transducer 80%(typ)
- Total Quiescent Power Supply Current (3V) 3m A(typ)
- Total Shutdown Power Supply Current (3V) 0.01µA(typ)
- Single Supply Range (VSSOP & WSON) 2.7V to 5.5V
- Single Supply Range (DSBGA) (Note 11) 2.7V to 3.8V
DESCRIPTION
The LM4665 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....
