APX803S-29SA-7

APX803S-29SA-7 is a 3-pin microprocessor reset circuit. It is used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5.0V, 3.3V, 3.0V and 2.5V powered circuits. These circuits perform a single function: they assert a reset signal on power up and whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a fixed period of time after VCC has risen above the reset threshold. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Typical applications include computers, controllers, intelligent instruments, critical µP and µC power monitoring, portable/battery powered equipment.

• Fully specified over temperature, open-drain RESET active low
• Guaranteed reset valid to VCC=1V
• Supply voltage range from 1.0 to 5.5V
• Supply current is 10μA typ at VTH + 0.2V, TA=+25°C
• Reset threshold tempco is 30ppm/°C typ at TA=-40°C to +85°C
• VCC to active-low RESET delay is 20µs typ at VCC=VTH to (VTH – 100mV), TA=+25°C
• SOT23 package
• Operating ambient temperature range from -40°C to +85°C
• Active-low RESET output high leakage current is 1µA max at VCC > VTH +0.2V, TA=+25°C