Nisshinbo Supervisory Circuits
Nisshinbo Supervisory Circuits are used in automotive, industrial, and consumer applications. The devices feature high accuracy, low supply current, a wide operating range, and more. This Nisshinbo product line-up is designed to meet the needs of various projects.
Monitoring Standard MCU 3.3V
The standard MCU working at 3.3V, RP300 is suitable to monitor the MCU.
• 5 options for detection voltage (2.63V, 2.7V, 2.8V, 2.93V and 3.08V)
• High detection accuracy ±0.8%
• Output delay time is set by internal counter => external capacitor less
• 2 package types (SOT-23-5, DFN(PLP)1010-4B)
High Voltage
There are two unique features for voltage detectors: one is a high input voltage and the other is a stable voltage monitor. A stable voltage monitor can be realized by using a SENSE pin on the IC. The devices support an operating voltage up to 60V and detection voltage up to 36V. The parts can detect high voltage directly, and therefore reduce the voltage divider. Separating detection pin (SENSE pin) from power supply achieves stable operation.
R3111 (10V) / RN5VD (10V) / R3119 (36V) / R3121 (36V) / R3150 (36V) / R3160 (60V) / R3152 (42V, window type)
Block Diagrams
Window Voltage Detector
The window voltage detector monitors overvoltage and undervoltage to make sure the power supply is stable. The detection accuracy is high ±0.5%(Ta=25℃), and the SENSE pin is optional. The window voltage detector contributes to functional safety.
Block Diagrams
Composite Product
Nisshinbo also has 1-chip solutions, like a voltage detector with a watchdog timer monitoring the MCU clock or a voltage detector with a voltage regulator. These solutions support various applications.
Voltage Detector + Voltage Regulator
R1150 / R1510 / R5117 / R5112 / R5116
Voltage Detector + Watchdog Timer
Voltage Detector + Watchdog Timer + Voltage Regulator
Related Products
Nisshinbo Automotive Supervisory Circuits
Broad portfolio of watchdog timers and voltage detectors.
Nisshinbo R3152N Series 42V Input Window Voltage Detectors
Designed to prevent system malfunctions caused by abnormal voltages, high-accuracy detection.
Nisshinbo R3160 Voltage Detectors
60V input detectors with high detector threshold accuracy and low supply currents.
Nisshinbo R5114 System Power Supply ICs
Designed with an ultra-low power watchdog timer and features a voltage range of 3.5V to 42V.
Nisshinbo R5115 System Power Supply ICs
Ultralow power window-type watchdog timers (VR + VD + WDT).
Nisshinbo R5116 LDO Voltage Regulators
Offers a high accuracy of the output voltage and a detector threshold of -1.25% to 0.75%.
Nisshinbo R3121N Voltage Detectors
36V input voltage detector with release delay function for automotive applications.
Nisshinbo R5101G Power Management ICs
CMOS-based microprocessor ICs with watchdog timer and high accuracy output voltage.