Intersil Corp. (Irvine, CA) announced the ISL5585 Series of 3.3V, ringing subscriber line interface circuits (SLICs), which combine a 3.3V chip voltage with up to 100V high battery-ringing, supply-voltage capability. The ISL5585 SLIC Series eliminates the 5V supply in favor of a single, lower-power, 3.3V chip supply. The ISL5585 is available in the small, quad flat pack, no-leads, (QFN) package to minimize board space requirements.
The ISL5585 SLICs also provide on-chip, ring waveform generation and programmable current limiting. The on-chip, programmable, transient current limiting reduces the complexity and cost of the power supply because the power supply does not have to be designed to respond to, or control, sudden transient currents caused by on-hook/off-hook changes. The ISL5585 SLICs offer 65mW of standby consumption.
The ISL5585 Series SLICs are available in both the 28-lead, PLCC package and the small 32-pad, QFN package. The 7mm x 7mm QFN package offers space savings along with much greater thermal efficiency. Products are now sampling and will be released soon. Projected pricing in quantities of 1,000 units is in the range of $3.65 to $5.50, depending on the specific part selected.
