LM48557 Description
The LM48557 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones and portable media players, where board space is at a premium. The LM48557 charge pump allows the device to deliver 5.8VRMS from a single 4.2V supply.
LM48557 Key Features
- Output Voltage at VDD = 4.2V RL = 1µF +22Ω, THD+N ≤ 1%
- Quiescent Power Supply Current
- PSRR at 217Hz
- Shutdown current
- Integrated Charge Pump Bridge-tied Load Output Differential Input High PSRR I2C Volume and Mode Control Reset Input Adva