Nanopower high-input voltage supervisor with manual reset and programmable-reset time delay

Wide Vin allows monitoring 9V rails or

batteries without external components and 24V rails with external resistors. Nano-Iq

extends battery life for low power applications and minimizes current consumption

when using external resistors. Fast start-up delay allows the detection of a voltage

fault before the rest of the system powers up providing maximum safety in hazardous

start-up fault conditions. Low Power-on-Reset (VPOR) prevents false

resets, premature enable or turn-on of next device, and proper transistor control

during power-up and power-down.

Reset output signal is asserted when

the voltage at VDD drops below the negative voltage threshold

(VIT-) or when manual reset ( MR) is pulled to a

low logic (VMRL). Reset signal is cleared when

VDD rise above VIT- plus hysteresis (VIT+) and

manual reset is floating or above VMRH and the

reset time delay (tD) expires. Reset time delay can be programmed by

connecting a capacitor between CT pin and ground. For a fast reset CT pin can be

left floating.

Additional features: Built-in glitch

immunity protection for MR and VDD, built-in

hysteresis, low open-drain output leakage current (ILKG(OD)).