Part Number	Replacement	Explanation

Description

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The DS1812 (5V) and DS1817 (3.3V) EconoResets are simple three-pin voltage monitors and power-on resets that hold reset for 150ms for stabilization after power returns to tolerance. The voltage monitor uses precision temperature reference and comparator circuits that detect out-of-tolerance conditions and generate an active high reset.

The output has a push-structure capable of maintaining a valid output to 0 volts with a 100kΩ pull-down resistor. The low-power circuit has a quiescent current consumption of only 40 micro-amps.

The DS1812 replaces discrete components and saves space, particularly in the new SOT-23 package. EconoResets can benefit any system that requires reliable processor operation, especially consumer products like printers, HVAC, energy management, cellular telephones, PDAs, and set-top boxes.

DS1812: Block Diagram Enlarge+

Key Features

• Power-fail detection
• Resets system during power transients
• Push-pull active high reset
• 150ms stabilization pause
• Maximum quiescent current of 40µA
• Operating ranges:
  • 5V with 5%, 10% or 15% tolerance
  • -40°C to +85°C