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說明

The TPS310x and TPS311x families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power-on, RESET is asserted when the supply voltage (V_DD) becomes higher than 0.4 V. Thereafter, the supervisory circuit monitors V_DD and keeps the RESET output active as long as V_DD remains below the threshold voltage (V_IT). An internal timer delays the return of the output to the inactive state to ensure proper system reset. The delay time starts after V_DD has risen above V_IT. When V_DD drops below V_IT, the output becomes active again.

All the devices of this family have a fixed-sense threshold voltage (V_IT) set by an internal voltage divider.

The TPS3103 and TPS3106 have an active-low, open-drain RESET output.

特性

• Controlled Baseline
  • One Assembly Site
  • One Test Site
  • One Fabrication Site
• Extended Temperature Performance of -55°C to 125°C
• Enhanced Diminishing Manufacturing Sources (DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree⁽¹⁾
• Precision Supply Voltage Supervision Range: 0.9 V, 1.2 V, 1.5 V, 1.6 V, 2 V, and 3.3 V
• High Trip-Point Accuracy: 0.75%
• Supply Current of 1.2 µA (Typ)
• RESET Defined With Input Voltages as Lowas 0.4 V
• Power-On Reset Generator With a Delay Time of 130 ms
• Push/Pull or Open-Drain RESET Outputs
• SOT23-6 Package
• APPLICATIONS
  • Applications Using Low-Power DSPs, Microcontrollers, or Microprocessors
  • Portable- and Battery-Powered Equipment
  • Intelligent Instruments
  • Wireless Communication Systems