RT9802

Pinout




Description

The RT9802 is a micro-power voltage detector supervising the power supply voltage level for microprocessors (uP) or digital systems. It provides user programmable threshold levels with 0.1V step ranging from 1.5V to 5V, which covers most digital applications. It features low supply current of 3uA. Selection of V_TH is easily achieved through 3 pins connected to GND, V_DD or floating for different threshold voltage settings. Two versions of threshold voltages, 1.5V to 4V and 2.5V to 5V, which are programmed in factory are offered by customer demands.
The RT9802 performs supervisory function by sending out a reset signal whenever the V_DD voltage falls below a preset threshold level. This reset signal will last the whole period before V_DD recovering. Reset signal will release after V_DD is recovered and lasts for the whole period of Reset Active Time-out period.
RT9802 is CMOS, active-low output and provided in SOT-23-6 package.