New Japan Radio (NJR) newly developed system reset IC NJU2103A/NJU2103B and system reset IC NJU2102A with watchdog timer function finally entered the mass production stage.
summary
New Japan Radio has developed two new system reset ICs for monitoring power supply voltage circuits in various electrical equipment through the use of micromachining technology and independently developed circuit technology, which replace the previous products NJM2103 and NJM2102. One is the system reset IC NJU2103A, NJU2103B, which can monitor the power supply voltage and any voltage in two systems. The other is the system reset IC NJU2102A, which has a built-in watchdog timer, which allows various microcomputer systems with fail-safe functions.
The voltage detection accuracy of NJU2103A, NJU2103B and NJU2102A has reached 1%, and the power consumption has been halved compared with previous products, thus improving the characteristics of the products.
Due to the improvement of the voltage detection accuracy of the system reset IC, the voltage can be set near the detection voltage, and the accuracy of power monitoring of electrical equipment is also improved. The above features coupled with low power consumption can extend the service life of battery devices.
Features
NJU2103A
Can directly replace NJM2103 products (DMP8 package, DIP8 package)
Can detect power supply voltage 4.2V±1.0% and any voltage (VSB detection voltage 1.22V±1.0%)
Low current consumption 280㎂ typ.
NJU2103B
VSB detection voltage, VSC detection voltage are matched with MB3771, so they can be replaced. ※
Can detect power supply voltage 4.2V±1.0% and any voltage (VSB detection voltage 1.23V±1.0%)
Low current consumption 280㎂ typ.
NJU2102A
Can directly replace NJM2102 products
The detection voltage, various setting times are matched with MB3773, so it can be compatible and replaced. ※
Detectable power supply voltage 4.2V±1.0%
Built-in watchdog timer
※
However, it can only be regarded as compatible with corresponding products in terms of main features and performance. There are still some differences in features.
Please consider replacing it after thorough testing on the actual equipment.
Performance improvement
The adoption of micro-processing technology and the circuit technology developed by ourselves have improved the various characteristics of our products in terms of high precision, low power consumption, and miniaturization, which is helpful to improve the reliability of the power monitoring system in the application of microcomputer monitoring system. .
application
Industrial equipment
Residential equipment
Office automation equipment
Entertainment devices
Any electrical equipment with a power circuit
