Application Report Vol.084: System Reset IC with Built-in Watchdog Timer and Power Voltage Monitoring. New Japan Radio "NJM2102"

Replace with silicone! Maintains high-speed switching even at high temperatures, reducing power loss!

The "SiC-SBD series" is a Schottky barrier diode made from SiC (silicon carbide) material. It supports low resistance and high-speed switching, which can reduce switching losses. Additionally, it can operate stably at high temperatures, enabling the miniaturization of power devices. It is effective in high-speed switching applications such as PFC circuits, motor drive circuits, and inverter circuits. 【Features】 ■ Reduction of switching losses due to high-speed switching characteristics ■ Improvement of power conversion efficiency and capability for high frequency ■ Reduction of leakage current at high temperatures ■ Prevention of thermal runaway due to increased current *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Other semiconductors
• Weight related measuring instruments
• Analytical Equipment and Devices

We can provide a wide range of proposals tailored to your needs.

【Product Lineup】 Operational Amplifiers Video Amplifiers Audio Amplifiers Comparators A/D Converters D/A Converters Analog Switches Digital Potentiometers Linear Regulators Switching Regulators DC/DC Converters Reset ICs Battery Chargers References ICs for Crystal Oscillators Silicon Oscillators RS232, RS485, RS422 Interfaces LED Drivers LCD Drivers Motor Drivers Wireless Modules (Bluetooth, Wireless LAN, GPS)

• Other semiconductors
• Weight related measuring instruments
• Analytical Equipment and Devices

Analog input filterless monaural 1.5W output Class D power amplifier

Low voltage operation, filterless output, and 1.5W output make it ideal for battery-powered device speaker amplifiers. 【Overview】 The NJU8758 is a filterless Class D power amplifier that operates over a wide range from 1.8V to 5.5V. The output is in a BTL configuration, eliminating the need for coupling capacitors and providing an output of 1.5W. Additionally, since an output LC filter is not required, the number of external components can be reduced. The output terminals are equipped with a built-in short-circuit protection circuit that protects the IC during short circuits between the output terminals and between the output terminals and ground. With its Class D operation, it offers high power efficiency, making it ideal for small consumer devices such as security equipment, portable devices, portable audio equipment, and laptops.

• Other semiconductors

Low voltage operation video amplifier with built-in LPF.

Overview: The NJM2561A is a low-voltage video amplifier with a built-in low-pass filter (LPF). It operates at a supply voltage of 2.6 to 5.5V, allowing for low-voltage operation, and features a built-in 75Ω driver circuit, enabling direct connection to video equipment such as TV monitors. The input supports composite video signals and includes a mute circuit that also serves power-saving functions, making it suitable for low power consumption designs. Additionally, its compact package (ESON6) makes it ideal for portable devices such as DSCs, DVCs, and surveillance cameras.

• Other semiconductors

Audio stereo A/D converter supports a sampling frequency of fs=8kHz to 192kHz while achieving low power consumption.

**Overview** The NJU3610 is a stereo A/D converter that supports sampling frequencies from 8 to 192 kHz, utilizing 1-bit ΔΣ technology to achieve high precision and low power consumption. The input circuit features fully differential inputs and is equipped with a stereo 4-to-1 selector. It can operate with dual power supplies of 1.8V/3.3V or a single power supply of 3.3V. The NJU3610 is ideal for various consumer audio devices such as digital TVs, soundbars, and speaker systems.

• Other semiconductors

Contributed to reducing the development costs of cradle speakers and improving stereo sound quality.

eala Stereo Expander with Push Button Interface Electronic Volume 【Overview】 The NJU7392 is an electronic volume with a built-in push button interface and eala Stereo Expander. This product features a dual-input selector, sound field adjustment function compatible with closely spaced speakers (eala Stereo Expander), push button electronic volume, and a bass boost function with a limiter. Additionally, the standby function allows for reduced power consumption of the set. Various modes can be controlled via push buttons or switches, eliminating the need for a microcontroller. It is ideal for applications such as cradle speakers for portable audio players and handheld gaming devices where speaker spacing is narrow.

• Other semiconductors

A low saturation type regulator with a minimum output voltage of 0.8V, enhanced analog characteristics such as output voltage accuracy and load stability.

Io=500mA Low Output Voltage Low Saturation Regulator Despite a minimum output voltage of 0.8V, this low saturation regulator enhances analog characteristics such as output voltage accuracy and load stability. 【Overview】 The NJM2841 is a low saturation regulator that supports low output voltages down to 0.8V. Utilizing a bipolar process, it achieves low noise and high ripple rejection, while supplying a separate power source (VBIAS) for the control circuit, ensuring good load stability and transient response even during low input-output voltage operation. This makes it ideal for core voltage supply applications in digital devices such as CPUs, DSPs, and ASICs. It is housed in a compact SOT-23-5 package with an output current of 500mA, and is compatible with small 4.7μF ceramic capacitors, allowing for a reduction in mounting area.

• Other semiconductors

Happy New Year. Thank you very much for your exceptional support over the past year. This year, we will continue to strive to provide prompt and high-quality services, and all of our employees will work hard towards this goal. We kindly ask for your continued support and patronage. We look forward to your continued cooperation this year as well.

We would like to inform you that the company name has been changed as of January 1, 2026. New company name: KELLER Pressure Co., Ltd. (Former company name: KELLER Pressure Japan Co., Ltd.) There are no changes to the phone numbers or inquiry email. Phone numbers: 03-5944-9199, 03-5944-9198 Inquiry email: sales.jp@keller-pressure.com We appreciate your continued support.

Happy New Year! Thank you very much for your exceptional support over the past year. Yoshikawa Co., Ltd.'s Realization Division will continue to contribute to solving your challenges this year as a "Realization House" that transforms your thoughts of "I want to do this" and "Is it possible to do something like this?" into reality, utilizing our skilled stainless steel processing technology. We are pleased to announce that we will be exhibiting for the first time at "The 40th NEPCON Japan," which will be held at Tokyo Big Sight from **January 21 (Wednesday) to 23 (Friday), 2026**, to introduce our technologies and products in greater depth. At our booth, we will showcase a variety of slide-type metal mask dedicated shelves that contribute to improving productivity in the electronics field. These not only lead to efficient management and improved workability in limited spaces but can also be customized according to your needs. We invite you to visit our booth at Tokyo Big Sight during this opportunity. We welcome inquiries such as "Can this processing be done?" and look forward to seeing you there.

Insulating oil from old electrical equipment that has been in use for over 30 years may be contaminated with PCBs. Proper disposal is required by the disposal deadline. If you are using a vacuum tube oscillator, please check! - Transformers - Capacitors - Rectifiers, etc. If you have oscillators or hardening equipment, please consider updating them as soon as possible. *For more details, please refer to the PDF document or feel free to contact us. ★ For inquiries by phone, please call: Osaka Headquarters → TEL: 072-991-1361 Nagoya → TEL: 052-322-1361 Tokyo → TEL: 03-5472-1361 ★ For inquiries by email, please contact: info@fujidenshi.co.jp *When calling or emailing, please mention "Ipros" as your reference. Business hours: Monday to Friday, 9 AM to 5 PM.

From March 24 (Tuesday) to March 27 (Friday), 2026, RheaVita will exhibit as a conference sponsor at ISLFD, held in Fukuoka, in collaboration with Lifix Analytical. ISLFD is an international conference where researchers and engineers involved in freeze-drying and related technologies gather from around the world to exchange information and discuss research results and technological trends. Through our sponsorship at this conference, RheaVita will present the latest information on spin freeze-drying technology. At our booth, in addition to introducing the latest information about spin freeze-dryers, we will be open to consultations on a wide range of topics, including research and development, feasibility testing, scaling up, and comparisons with existing processes. We aim to create a valuable platform for information exchange for those asking questions such as "What is spin freeze-drying?", "What are the differences from conventional freeze-drying processes?", "What are the challenges of scaling up and reproducibility?", and "What new formulation and manufacturing approaches should be considered?". Additionally, individual meetings will be possible during the conference. If you contact us in advance, we will secure a meeting opportunity at a time that is convenient for you. Please be sure to stop by the RheaVita booth.