Description

The STM1E-SFP03 is an IC chip in the electronic components category. The STM181x device is a low-power reset device used to monitor power supplies for microcontrollers, which performs a single function. It asserts a reset signal whenever VCC supply voltage drops below a preset value and keeps it asserted until VCC has risen above the preset threshold for a minimum period of time. It provides excellent circuit reliability without additional external components when used with +3.0 V / +3.3 V (STM1815–STM1818), and +5 V (STM1810–STM1813) power supply systems.

Specifications and features

• Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
• Four output configurations:
  • Push-Pull, Active-High (STM1812,1817)
  • Push-Pull, Active-Low (STM1810,1815)
  • Open Drain, Active-Low (STM1811,1816)
  • Open Drain, Active-Low with PushButton Detect (STM1813,1818)
• Reset pulse width - 100 ms (min)
• Low supply current - 4 µA (typ)
• Guaranteed assertion down to VCC = 1.0 V (0 °C to 105 °C)
• Factory-trimmed reset thresholds of 2.55 V, 2.88 V, 3.06 V, 4.37 V, and 4.62 V (typ)
• Power supply transient immunity
• Push-button/manual reset detect (STM1813/1818)
• Operating temperature: –40 °C to 105 °C
• ± 2.5 % reset threshold accuracy: (–40 °C to 105 °C)
• Available in the SOT23-3 package
• Fully compatible with DS181x and MXD181x products.

Application Scenarios

This IC chip can be used as a low-power reset device to monitor power supplies for microcontrollers.

Comparison

• Precision monitoring of multiple power supply voltages
• Low supply current
• Guaranteed assertion down to VCC = 1.0 V (0 °C to 105 °C)
• Power supply transient immunity
• Fully compatible with DS181x and MXD181x products

• None identified