STLC5444FN中文资料意法半导体数据手册PDF规格书

DESCRIPTION

The ISDN Quad Feeder Power Supply (IQFPS) provides a power source for up to four line interfaces. The power source to the device is a local battery or a centralized regulated power supply.

It can operate in point-to-point and point-to-multipoint configurations as far as S interface is concerned. By the device microprocessor interface, each powered line is individually controlled and monitored.

■ SUPPLIES POWER FOR UP TO FOUR DIGITAL TELEPHONE LINES

■ CONFORMS TO THE CCITT RECOMMENDATIONS FOR POWER FEED AT THE S OR T REFERENCE POINTS

■ SUPPORTS POINT-TO-POINT AND POINT TO MULTIPOINT CONFIGURATIONS

■ EACH OF THE FOUR LINES IS INDIVIDUALLY CONTROLLED

■ HIGH-VOLTAGE BCD TECHNOLOGY SUPPORTING UP TO -130V

■ AUTOMATIC THERMAL SHUTDOWN

■ STATUS CONDITION DETECTION (BY MICROPROCESSOR) FOR EACH LINE:

– Low output voltage

– Openloop

– Current overload

– Thermal overload

– Normal line condition

■ PROGRAMMABLE CURRENT LIMITING

■ OUTPUT CURRENT UP TO 120mA