Part # Application Notes Communications Public Telecom STLC3075 Wireline Communication Ics AN2132 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: STLC3075 VERY LOW SINGLE SUPPLY SLIC FOR WLL APPLICATION IN FLY-BACK CONFIGURATION


Part Details:

AN2132 Application note STLC3075 very low single supply SLIC for WLL application in flyback configuration Introduction The STLC3075 is a SLIC device specially designed for WLL (Wireless Local Loop) and ISDN terminal adapters. This document contains a description of the device functions in flyback configuration, and provides some application hints. The device data sheet is an essential complement to this application note, providing important reference information that will simplify understanding of the content. 19-Feb-2007 Rev 3 1/26 www.st.com Content AN2132 Content 1 Wireless local loop system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 TQFP 10 mm x 10 mm x 1.4 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 VBAT voltage generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 Operation in off-hook condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 VPOS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Start-up and DC-DC converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.5 Suggested transformers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.6 Input current limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.7 VPOS current capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.7.1 With USA REN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.7.2 With European REN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.8 RSENSE setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.9 Trapezoidal ringing signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10 Ringer load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.1 With European REN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.2 With USA REN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.11 Efficiency and power dissipation in flyback configuration . . . . . . . . . . . . . 14 3.12 Micro interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15


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Application Notes Communications Public Telecom STLC3075 Wireline Communication Ics AN2132.pdf Datasheet