Nanopower high-input voltage supervisor with manual reset

20th May 2019
Posted By : Alex Lynn
Nanopower high-input voltage supervisor with manual reset

The TPS3840 from Texas Instruments is a nanopower high-input voltage supervisor with manual reset and programmable reset time delay. Wide Vin allows monitoring nine volt rails or batteries without external components and 24V rails with external resistors. Nano-Iq extends battery life for low power applications and minimises 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 (VMR_L). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VIT+) and manual reset is floating or above VMR_H 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 include; built-in glitch immunity protection for MR and VDD, built-in hysteresis, low open-drain output leakage current (ILKG(OD)).

To learn more, click here.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Girls in Tech | Catalyst | 2019
4th September 2019
United Kingdom The Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover
Women in Tech Festival 2019
17th September 2019
United Kingdom The Brewery, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris