RT9818C-29GV Richtek USA Inc, RT9818C-29GV Datasheet - Page 9

• Manufacturer Part Number: RT9818C-29GV
• Description: IC VOLT DETECTOR 2.9V SOT23-3
• Manufacturer: Richtek USA Inc
• Type: Simple Reset/Power-On Resetr

Specifications of RT9818C-29GV

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 143 ms Minimum
• Voltage - Threshold: 2.9V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1028-1020-2

RT9818
Application Information
Multiple Supplies
Mainly, the pull-up connected to the RT9818 will connect to the supply voltage that is being monitored at the IC’ s
VDD
pin. However, some systems may use the open-drain output to level-shift from the monitored supply to reset circuitry
powered by some other supply.
Benefits of Highly Accurate Reset Threshold
Most μP supervisor ICs have reset threshold voltages between 1% and 1.5% below the value of nominal supply voltages.
This ensures a reset will not occur within 1% of the nominal supply, but will occur when the supply is 1.5% below
nominal.
DS9818-07 June 2009
www.richtek.com
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