TPS3808G18DBVRG4

低静态电流可编程延迟监控电路 Low Quiescent Current, Programmable-Delay Supervisory Circuit

DESCRIPON

The TPS3808xxx family of microprocessor supervisory circuits monitor system voltages from 0.4V to 5.0V, asserting an open drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset MR pin drops to a logic low. The RESET output remains low for the user adjustable delay time after the SENSE voltage and manual reset MR return above their thresholds.

FEATURES

• Power-On Reset Generator with Adjustable

   Delay Time: 1.25ms to 10s

• Very Low Quiescent Current: 2.4µA typ

• High Threshold Accuracy: 0.5% typ

• Fixed Threshold Voltages for Standard

  Voltage Rails from 0.9V to 5V and Adjustable

  Voltage Down to 0.4V Are Available

• Manual Reset MR Input

• Open-Drain RESET Output

• Temperature Range: –40°C to +125°C

• Small SOT23 and 2mm × 2mm QFN Packages

APPLICATIONS

• DSP or Microcontroller Applications

• Notebook/Desktop Computers

• PDAs/Hand-Held Products

• Portable/Battery-Powered Products

• FPGA/ASIC Applications