PCI Local Bus Power Supervisor is used in Desktop PCs, PCI-Based Systems and Network servers. PCI Local Bus Power Supervisor, available under the series number LMC6953, is a voltage supervisory chip designed to meet PCI [Peripheral Component Interconnect] Specifications Revision 2.1. It monitors 5V and 3.3V power supplies. In cases of power-up, power-down, brown-out, power failure and manual reset interrupt, the Power Supervisor provides an active low reset. RESET# holds low for 100 ms after both 5V and 3.3V powers recover, or after manual reset signal returns to high state. The external capacitor on pin 8 adjusts the reset delay. PCI Local Bus Power Supervisor has been manufactured and supplied by National Semiconductors India Designs Pvt Ltd.
National Semiconductors India Designs Pvt Ltd, a wholly owned subsidiary of California-based National Semiconductor, manufactures and supplies innovative analog technology products that are energy-efficient and easy-to-use, with particular expertise in ultra low power designs. The PCI Local Bus Power Supervisor has a built-in band gap reference that accurately determines all the threshold voltages. The internal reset delay circuitry eliminates additional discrete components. This part is ideal on PCI motherboards or add-in cards to ensure the integrity of the entire system when there is a fault condition. The active low reset sets the microprocessor or local device in a known state.
