LE9541CUQCT

The Le9541 Ringing SLIC device is a single-channel device and equivalent of channel 1 of Le9540 in the same 40-pin QFN package. It is optimized to provide battery feed. ringing, and supervision on voice loops found in short-loop VoIP applications. This device is optimized to interface to the Broadcom BCM3383/85 SoC, or equivalent. The SLIC operational control and status report are communicated through a serial interface with reset. The SLIC supports wide-band applications.

• Single Channel High Voltage Ringing SLIC
• Functionally Equivalent of Le9540 One Channel
• High Voltage High Bandwidth Design Supports 7-kHz Wide Band Applications
  • Up to -100 V ringing battery Le9541C
• Operation Control and Status Report through Serial Interface with Reset
  • SLIC Operation State/DC Current Limit/Test Load Enable
  • DC Loop Closure/Ring Trip/Thermal Shutdown
• Eight Operating States
  • Scan (Minimal Power Dissipation)
  • Active Forward (Default Power Up State)
  • Active Forward ICV
  • Active Reverse
  • Tip Open
  • Wink
  • Ringing
  • Disconnect
• Ringing Inputs for Optimized Interface to BRCM SoC Devices
  • Accepts driving signals from per channel voice outputs as well as from PWM outputs
• DC Current Limited in Active/Scan/Tip Open States
• Loop Start, Ring Trip, and Ring-Ground Detections with Two Thresholds