SolarMagic 5-Pin Microprocessor Reset Circuit - SM72240

SM72240 (ACTIVE)

SolarMagic 5-Pin Microprocessor Reset Circuit

Description

The SM72240 microprocessor supervisory circuit monitors the power supplies in microprocessor and digital systems. It provides a reset to the microprocessor during power-up, power-down, brown-out conditions, and manual reset.

The SM72240 asserts a reset signal whenever the supply decreases below the factory-programmed reset threshold. Reset will be asserted for at least 100ms even after VCC rises above the reset threshold.

The SM72240 has an active-low open-drain RESET output.

The SM72240 is suitable for monitoring 5V. With a low supply current of only 6µA, the SM72240 is ideal for use in portable equipment. The SM72240 is available in the 5-pin SOT-23 package.

Features

  • Renewable Energy Grade
  • Precise monitoring of 5V supply voltages
  • Fully specified over temperature
    •   −40°C to +125°C
  • 100 ms minimum Power-On Reset pulse width, 190 ms typical:
    •  Active-Low RESET Open Drain Output
  • RESET Output valid for VCC ≥ 1V
  • Low Supply Current, 6µA typical
  • Power supply transient immunity
  • Compatible with MAX811/812 applications

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Parametrics Compare all products in Supervisor and Reset IC

 
# of supplies monitored
Threshold Voltage 1 (typ) (Typ) (V)
Iq (Typ) (uA)
Output Driver Type / Reset Output
Reset Threshold Accuracy (%)
Time Delay (ms)
Watchdog Timer WDI (sec)
Rating
Operating Temperature Range (C)
Approx. Price (US$)
Pin/Package
SM72240
1    
3.08
4.63    
6    
Active-low
Open-drain    
3    
190    
None    
Catalog    
-40 to 125    
0.93 | 1ku    
5SOT-23    

Related end equipment

  • Microprocessor Systems
  • Computers
  • Controllers
  • Intelligent Instruments
  • Portable/Battery-Powered Equipment

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