STMicroelectronics AN2118 Application Note for STLC3075

This document describes the STLC3075 single supply SLIC for WLL (Wireless Local Loop) application in buck-boost configuration. It provides a description of the device functions and some application hints.


STMicroelectronics AN2118 Application Note for STLC3075 - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Application Note
Language
English
Pages
21
File format
PDF
File size
253 KB
Published
06 August, 2012
Updated
28 September, 2023
MD5 checksum
0A78B5A8F94DC95A34080C9C22E5E70F

About this manual

The document provides a description of the STLC3075 single supply SLIC (Subscriber Line Interface Circuit) device specifically designed for Wireless Local Loop (WLL) applications operating in a buck-boost configuration. It details how the device generates negative battery voltage and trapezoidal ring signals.

What's inside

  • Wireless local loop system
  • Packaging
  • Typical application schematic
  • VBAT voltage generation
  • Operation in off-hook condition
  • VPOS characteristics
  • Start-up and DC-DC converter
  • Input current limitation
  • Protection
  • PCB precautions

Specifications

Package dimensions10 mm x 10 mm x 1.4 mm
Thermal resistance (four layer)45 °C/W

Frequently asked questions

What is the typical clock signal frequency for the STLC3075?

The device typically operates with a clock signal of 125 kHz.

How does the VBAT voltage change when switching to ring mode?

When ring mode is selected, the internal circuit increases the VBAT voltage from its active level to a predetermined value for ringing.

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