STH4010
2.
5-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER
JULY 2006
FEATURES
• Maximum Battery Life and Minimum Heat – Efficiency With an 8-Ω Speaker: • 88% at 400 mW • 80% at 100 mW – 2.
8-mA Quiescent Current
– 0.
5-µA Shutdown Current • Only Three External Components
– Optimized PWM Output Stage Eliminates LC Output Filter
– Internally Generated 250-kHz Switching Frequency Eliminates Capacitor and Resistor
– Improved PSRR (–75 dB) and Wide Supply Voltage (2.
5 V to 5.
5 V) Eliminates Need for a Voltage
Regulator
– Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor
– Improved CMRR Eliminates Two Input Coupling Capacitors
• Wafer Chip Scale Packaging (WCSP)...