Part # Application Notes Public Telecom STLC3075 Wireline Communication Ics AN2118 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: STLC3075 SINGLE SUPPLY SLIC FOR WLL APPLICATION IN BUCK-BOOST CONFIGURATION


Part Details:

AN2118 Application note STLC3075 single supply SLIC for WLL application in buck-boost 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 buck-boost 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. Obsolete Product(s) - Obsolete Product(s) February 2007 Rev 3 1/21 www.st.com Content AN2118 Content 1 Wireless local loop system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 TQFP 10 mm x 10 mm x 1.4 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 Input current limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.6 VPOS current capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.7 RSENSE settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.8 Trapezoidal ringing signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.9 Ringer load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.9.1 With European REN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.9.2 With USA REN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.10 Functioning at low VPOS (5.5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.11 Efficiency and power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.12 Micro interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.13 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.14


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Application Notes Public Telecom STLC3075 Wireline Communication Ics AN2118.pdf Datasheet