STLC5445

Number of Voltages Monitored :
Monitored Voltage :
Undervoltage Threshold :
Overvoltage Threshold :
Output Type :
Manual Reset :
Watchdog :
Battery Backup Switching :
Power-Up Reset Delay (Typ) :
Supply Voltage - Max :
Supply Voltage - Min :
Supply Current (Typ) :
Maximum Power Dissipation :
Maximum Operating Temperature :
Mounting Style : SMD/SMT
Packaging : Tray
Package / Case : HiQUAD-64


Features:

 BATTERY VOLTAGE UP TO 120V
SUPPLIES POWER FOR UP TO FOUR DIGITAL TELEPHONE LINES
PROGRAMMABLE CURRENT LIMITING
LONGITUDINAL CURRENT CANCELLATION
ETSI ETR80 COMPLIANT
OUTPUT CURRENT UP TO 140 mA
STATUS CONDITION DETECTION FOR EACH LINE
AUTOMATIC THERMAL PROTECTION
AUTO POWER ON SEQUENCE
OUTPUT STAGE OPTIMIZED FOR MINIMAL OUTPUT OVERVOLTAGE PROTECTION
TWO EXTERNAL RELAY DRIVERS PER LINE
PARALLEL OR MPI CONTROL INTERFACE
HI-QUAD PACKAGE 64 PIN


Pinout




Specifications

Symbol	Parameter Value	Value	Unit
VDD	Voltage from digital input to DGND	0.5 to VCC + 0.5	V
VCD	Voltage from VCC to DGND	0.4 to +7	V
VBB	Voltage from VBAT to BGND	143 to + 0.4	V
VBD	Voltage from BGND to DGND	3 to +0.5	V
IWBn	AC Current into the WBn outputs (WBPn not connected to GND	250	mA peak
INEG	Negative current injected in the WAn outputs (-40 to +85)	50	mA
Tstg	Storage temperature	60 to 150

Description

The STLC5445 QUAD LINE FEED CONTROLLER provides a power source for up to four U line interfaces. The power source to the device is a local battery or a centralized regulated power supply. Each powered line is individually controlled and monitored by the device interface.

A MPI or a simple parallel interface can be selected by a pin strap.

Each line can be individually powered and monitored:therefore overload and faults can easily be detected and localized even in a large system. The status conditions detected by the STLC5445 are: Current Overload,Thermal Overload, Open Loop. If activated (by means of a dedicated pin strap), a self generated power on sequence avoids the thermal over stress when a simultaneous power on has been requested for more than one channel. The current limiting value can globally be programmed for the four channels by means of an external resistor. The STLC5445 has two integrated relay drivers per line to drive the test relays of the ISDN system.