LMC6953是TI公司的一款无产品，LMC6953是PCI 本地总线电源监控器，本页介绍了LMC6953的产品说明、应用、特性等，并给出了与LMC6953相关的TI元器件型号供参考。
LMC6953 - PCI 本地总线电源监控器 - 无 - 监控器和复位IC - TI公司（Texas Instruments，德州仪器）
The 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 LMC6953 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.
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.
The LMC6953 has a built-in bandgap reference that accurately determines all the threshold voltages. The internal reset delay circuitry eliminates additional discrete components.
- Compliant to PCI Specifications Revision 2.1.
- Under and Over Voltage Detectors for 5V and 3.3V
- Power Failure Detection (5V Falling Under 3.3V by 300mV Max)
- Manual Reset Input Pin
- Specified RESET Assertion at VDD = 1.5V
- Integrated Reset Delay Circuitry
- Open Drain Output
- Adjustable Reset Delay
- Response Time for Over and Under Voltage Detection: 490 ns Max
- Power Failure Response Time: 90 ns Max
- Requires Minimal External Components
