EM6325- Reset Circuits

Ultra Low Power Reset Circuit with Manual Reset (1.3V-4.6V, SOT23, SOT143) - Ultra-Low Power

General Description

The EM6325 is a microprocessor supervisor circuit used to monitor power supplies in digital systems, providing maximum flexibility and reduced space in system without backup batteries. This circuit features a Manual Reset Input: an input that asserts reset when pulled low (/MR with internal pull-up). There are 11 standard threshold voltages between 1.31V and 4.63V for use with a wide range of power supplies. The reset signal is asserted with a delay time of 200ms (typ). The EM6325 features three output types: active-low push-pull, active-low open-drain and active-high push-pull. The output is guaranteed to be in the correct state for VDD down to 0.8V. The EM6325 is available in SOT23-5L package. It has an operating temperature range from -40°C to +125°C.

Solutions

  • Microprocessor, microcontroller and DSP systems
  • Portable/Battery-Powered equipment
  • Notebook/desktop computers
  • Workstations
  • Wireless communication
  • Automotive systems
  • Industrial electronics
  • PDA, Webpad

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Features

  • Manual reset function
  • Ultra-low supply current of 2.9uA
  • Operating temperature range: -40°C to +125°C
  • ±1.5% reset threshold accuracy
  • 11 standard thresholds: 4.63V, 4.4V, 3.08V, 2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V
  • Reset guaranteed for regulated output voltage down to 0.8V
  • Power-On reset Generator with fixed delay time of 200ms (typ). Three other delay times may be available by mask options and upon minimum order quantity (25ms, 1.6ms, 1600ms)
  • 3 reset output options: active-low reset push-pull and open-drain, active-high reset push-pull
  • Immune to short negative VDD transients
  • Threshold hysteresis: 2.1% of VTH
  • Very small SOT23-5L, SOT143-4L packages
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EM6325 Data sheet535.91 KB