MICROCHIP LE9643AQCT

The Le9643/Le9653 miSLIC device implements a universal telephone line interface with pin-selectable PCM and SPI or ZSI serial digital interfaces. All AC, DC, and signaling parameters are fully programmable via the PCM and SPI or reduced pin-count ZSI interfaces. The switching regulator controller generates the high voltage needed for efficiently powering and ringing analog telephones. The Le9643 supports two switching regulator architectures, both are capable of ringing 85 - VPK; a Buck-Boost fixed tracking switching regulator architecture which uses a fixed voltage for ringing signals, or an Inverting-Boost switcher circuit which tracks the ringing voltage during ringing. The Le9653 supports two switching regulator architectures, both are capable of ringing 140 - VPK; a High Voltage Flyback or a High Voltage Inverting-Boost switcher circuit both of which track the ringing voltage during ringing. The battery tracks the DC feed with both architectures. The switching regulators provide high efficiency in all operating states and corresponding low power consumption. The Le9643/Le9653 utilizes the VeriVoice Professional Test Suite Software to resolve line circuit faults and to provide line diagnostics. The integrated digital access to line information such as AC and DC line voltages and Metallic or Longitudinal currents is crucial for remote applications where dedicated test hardware is not cost effective.

• Smaller, 36-pin 4x6 mm QFN package
• Low cost, 2-Layer PCB Reference Designs
• Software compatible with equivalent feature set to the Le9641/Le9651
• Pin-Selectable PCM/SPI or ZSI Interfaces
• Single port 4-wire ZSI control simplifies board routing
• Compatible with numerous VoIP processors and SoC solutions
• Le9643 95V Peak Battery Designs
• Up to 60-VRMS with up to 3 REN load
• Up to 50-VRMS with up to 5 REN load
• Le9653 150V Peak Battery Designs
• Up to 100-VRMS with up to 5 REN load
• Energy Efficient Switching Regulator Architectures
• Le9643: Buck-Boost fixed tracking; Inverting-Boost tracking
• Le9653: High Voltage Flyback tracking; High Voltage Inverting-Boost tracking
• Consistent with Code of Conduct on Energy Consumption of Broadband Equipment
• VoicePath SDK and VP-API-II Software available to implement FXS functions
• VeriVoice Professional Test Suite Software
• Comprehensive subscriber loop testing, per Telcordia GR-909-CORE/711A-1063
• VeriVoice Manufacturing Test Package (VVMT)
• Facilitates factory testing of assembled boards
• Complete Wideband or Narrowband BORSCHT functionality
• Worldwide Programmability

• Fixed Wireless (LTE) Gateways
• DSL Residential Gateways and Integrated Access Devices (IADs)
• Cable Embedded Multimedia Terminal Adapters (eMTAs)
• PON Single Family Units (SFU)
• Fiber-to-the-premise (FTTX) solutions
• Analog Telephone Adapters (ATAs)