UC1903 UC2903 UC3903
www. ti. com . SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008
Quad Supply and Line Monitor
FEATURES
1
• Inputs for Monitoring up to Four Separate Supply Voltage Levels
• Internal Inverter for Sensing a Negative Supply Voltage
• Line/Switch Sense Input for Early Power Source Failure Warning
• Programmable Under- and Over-Voltage Fault Thresholds with Proportional Hysteresis
• A Precision 2. 5-V Reference • General Purpose Op-Amp for Auxiliary Use • Three High Current, >3 0mA, Open-Collector
Outputs Indicate Over-Voltage, Under-Voltage and Power OK Conditions
• 8-V to 40-V Supply Operation with 7-mA Stand-By Current
DESCRIPTION
The UC1903 family of quad supply and line monitor integrated circuits will respond to under- and over-voltage conditions on up to four continuously monitored voltage levels. An internal op-amp inverter allows ...
UC3903 PDF File
