APX809-26SAG-7

APX809-26SAG-7 is a 3-pin microprocessor reset circuit. It is used for microprocessor (µP) supervisory circuit to monitor the power supplies in µP and digital systems. This circuit performs a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 240ms after VCC has risen above the reset threshold. The low supply current makes the APX809 ideal for use in portable equipment. Typical applications include computers, controllers, intelligent instruments, critical µP and µC power monitoring, portable/battery powered equipment.

• Fully specified over temperature
• Push-pull active-low RESET active low
• Guaranteed reset valid to VCC = 1V
• No external components
• VCC range : 1.0 to 5.5V at TA = 0°C to +70°C
• Supply current is 30μA typ at TA = +25°C, VTH + 0.2V
• Reset threshold tempco is 30ppm/°C typ at TA = +25°C
• Set-up time is 20μs typ at VCC = VTH to (VTH - 100mV), TA = +25°C
• SOT23 package
• Operating ambient temperature range from -40 to +85°C