LM4671
FEATURES
- 2 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 DSBGA Package
APPLICATIONS
- Mobile Phones
- PDAs
- Portable Electronic Devices
KEY SPECIFICATIONS
- Efficiency @ 3.6V, 100m W into 8Ω Speaker: 80 % (typ)
- Efficiency @ 3.6V, 400m W into 8Ω Speaker: 88 % (typ)
- Efficiency @ 5V, 1W into 8Ω Speaker: 86 % (typ)
- Quiescent Current, 3.6V Supply: 2.8 m A (typ)
- Total Shutdown Power Supply Current: 0.01
µA (typ)
- Single Supply Range: 2.4 to 5.5 V
DESCRIPTION
The LM4671 is a single supply, high efficiency 2.5W switching 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 LM4671 is designed to meet the demands of mobile phones and other portable munication...
