L9219A Datasheet | Agere Systems

Features s Basic forward/reverse battery SLIC functionality at a low cost s Pin patible with Agere Systems Inc. L9217 and L9218 SLICs s Low active power (typical 138 m W during on-hook transmission) s Low-power scan mode for low-power, on-hook power dissipation (52 m W typical) s Distortion-free, on-hook transmission s Convenient operating states: - Forward active-low current limit - Forward active-high current limit - Reverse active-low current limit - Reverse active-high current limit - Low-power scan - Disconnect (high impedance) s Minimal external ponents required s Two gain options to optimize the codec interface s Adjustable supervision functions: - Off-hook detector with hysteresis - Ring trip detector s Logic controlled high and low current limit s Ramped rate of battery reversal s Thermal protection with thermal shutdown indication Description This...