NJU7291RB1-03-TE1

Overview

The NJU7291RB1-03-TE1 is a supervisory circuit manufactured by Nisshinbo Micro Devices, classified under PMIC - Power Management ICs. It functions as a voltage detector with an integrated watchdog timer. The device operates within a supply voltage range of 2.5 V to 7 V and features a detection threshold of 3 V. It provides an active low output signal and includes power failure detection capabilities. The component is designed for surface mount installation in MSOP-8 packages.

Feature Summary

• Integrates voltage monitoring with a built-in watchdog timer for system reliability
• Provides active low output signals upon detection of abnormal voltage conditions
• Includes dedicated power failure detection functionality

Applications

• Monitoring supply voltages in industrial equipment
• System reset generation for automotive applications
• Watchdog timer implementation in microprocessor circuits

Procurement Notes

Verify the specific suffix TE1 indicates reel packaging when ordering. Confirm the threshold voltage matches the required 3 V detection level for the target application. Ensure the MSOP-8 package footprint aligns with the PCB design. Check current availability status as distribution may vary.

Selection Notes

Select this component when a combined voltage detector and watchdog timer is required in a compact form factor. The 2.5 V minimum operating voltage suits low-power systems. The active low output is compatible with standard logic inputs. Verify that the 7 V maximum input rating covers the system's peak supply voltage.

Part Context

This part belongs to the NJU72 series of supervisory circuits from Nisshinbo Micro Devices. These components are categorized under PMICs and focus on system protection. The NJU7291 variant specifically combines voltage detection with watchdog timing, distinguishing it from basic voltage detectors or standalone watchdog timers.

Replacement Considerations

Consult official substitution lists for equivalent supervisory circuits with similar voltage thresholds and package types. Verify pin compatibility before replacing with other NJU72 series variants.