ROHM's New LDO Regulators with 500mA Output Current: Achieving Stable Operation with Ultra-Small Capacitors
MWN-AI** Summary
ROHM Semiconductor has unveiled the BD9xxN5 Series of low-dropout (LDO) regulator ICs, engineered for 500mA output current, utilizing its advanced “Nano Cap™” technology. This release marks a significant leap in LDO technology, catering to the increasing need for compact and efficient power supply solutions across diverse industries, including automotive, industrial, and communication infrastructure.
The BD9xxN5 series builds upon the earlier BD9xxN1 Series, which featured 150mA output current and excelled in stable operation with minimal capacitor sizes. The new series addresses the challenges of space-constrained applications by supporting ultra-small capacitors, including 0603M size MLCCs, thus enabling stable performance even with capacitance below 1µF. This is pivotal, especially in contemporary electronic design, where high density and flexibility are paramount.
Key features of the BD9xxN5 series include very low output voltage ripple—approximately 250mV with a load current variation from 1mA to 500mA within a 1?s timeframe—when paired with a small output capacitance of 470nF. This operational stability minimizes the design constraints often associated with traditional power supplies. ROHM's focus on miniaturization enhances component selection and ensures space-efficient electronic designs.
Mass production commenced in October 2025, with an output capacity of 300K units per month. Additionally, the series is readily available through online distributors like DigiKey and Mouser, making it accessible to a wide range of customers. ROHM's ongoing commitment to advancing its Nano Cap™ technology aims to drive further innovation in high-performance and reliable electronic devices, solidifying its role as a leader in power supply solutions.
MWN-AI** Analysis
ROHM Semiconductor's recent launch of the BD9xxN5 Series of LDO regulators marks a significant innovation in the power supply market, offering a 500mA output current with its proprietary Nano Cap™ technology. This is timely considering the growing demand for high-density electronic devices across automotive, industrial, and consumer electronics sectors, each requiring more compact power supply solutions.
The series' ability to operate stably with ultra-small capacitors (as low as 470nF) presents opportunities for designers to maximize space without sacrificing performance. This could appeal significantly to OEMs aiming to enhance the functionality of space-constrained devices, such as infotainment systems in cars and compact appliances in consumer electronics. With mass production already underway, ROHM is positioned strategically to capitalize on immediate market needs.
From a financial perspective, ROHM Semiconductor appears to be well-positioned for growth. The expanded output capabilities of the BD9xxN5 Series represent a clear competitive advantage, especially when considering the rising complexity of modern electronic applications that require efficient power management solutions. Investors should monitor the adoption rates in the target sectors, as this will drive revenue growth.
Additionally, the provision of high-precision SPICE models for realistic simulations is a critical value-add, likely enhancing customer satisfaction and bolstering sales. The ongoing embrace of miniaturization trends across industries reinforces the relevance of ROHM’s innovations.
Lastly, with strong monthly production capacities and online availability through distributors, ROHM Semiconductor is ensuring broad accessibility. Therefore, investors may consider the stock as a bullish opportunity, taking into account the strategic market position, innovative technology, and their response to evolving industry demands. Keeping an eye on quarterly reports will be essential to gauge the financial impact of this launch and potential shifts in market share.
**MWN-AI Summary and Analysis is based on asking OpenAI to summarize and analyze this news release.
Santa Clara, CA and Kyoto, Japan, Jan. 27, 2026 (GLOBE NEWSWIRE) -- ROHM Semiconductor today announced it has developed the “BD9xxN5 Series” of LDO regulator ICs with 500mA output current, featuring its proprietary ultra-stable control technology “Nano Cap™”. This series comprises 18 products designed for 12V/24V primary power supply applications used in automotive equipment, industrial equipment, and communication infrastructure.
In recent years, electronic devices have demanded higher density in smaller form factors at the same time. To meet this demand and achieve space savings and design flexibility, power supply ICs must be capable of stable operation even with small-capacity capacitors. However, achieving such performance with output capacitors of 1µF or less has been technically difficult.
To address this challenge, ROHM developed the “BD9xxN1 Series” LDO regulator (150mA output current) in 2022, incorporating its proprietary ultra-stable control technology, “Nano Cap™”. This innovation enables stable operation with output capacitors as small as 100nF, earning widespread adoption across numerous applications.
The newly developed BD9xxN5 Series builds on the success of the BD9xxN1 Series by increasing the output current to 500mA – more than three times higher than before – significantly broadening its suitability for applications requiring higher power. In addition, very low output voltage ripple of approximately 250mV (with load current variation of 1mA to 500mA within 1µs) is achieved with a small output capacitance of just 470nF (typical). Beyond standard small MLCCs (multi-layer ceramic capacitors) in the range of several µF and large-capacity electrolytic capacitors, it also supports ultra-small MLCCs, such as the 0603M size (0.6mm × 0.3mm), with capacities below 1µF – where stability was previously difficult to achieve. This contributes to space saving as well as greater flexibility in component selection.
Mass production of this series commenced in October 2025 at a monthly production capacity of 300K units. It is also available for purchase online through online distributors such as DigiKey, Mouser and Farnell.
Furthermore, high-precision SPICE models, “ROHM Real Model” are provided for accurate simulation and can be downloaded from the ROHM official website.
SPICE Models: BD900N5xxx-C BD933N5xxxx-C BD950N5xxxx-C
ROHM will continue to contribute to the high performance, miniaturization, and high reliability of electronic devices by further expanding its Nano Cap™ technology-equipped LDO series.
Application Examples
Automotive Equipment
- Powertrain system power supplies for fuel injection systems (FI) and tire pressure monitoring systems (TPMS)
- Body system power supplies for body control modules (BCM)
- Infotainment system power supplies for clusters ad head-up displays (HUD), etc.
Industrial Equipment
- Power supplies for controllers like Programmable Logic Controllers (PLC), Remote Terminal Units (RTU), and industrial gateways
- High-precision LDOs for analog loads and sensors measuring temperature, pressure, flow rate, etc.
- Power supplies for monitoring and control panels in disaster prevention systems, access control systems and building automation.
- Standby power supplies for Human-Machine Interfaces (HMI) and panel equipment, etc.
Consumer Electronics
- Power supplies for control boards in refrigerators, dishwashers, air conditioners, etc.
- Power supplies for home appliances like thermostats and doorbells
- Power supplies for constant power applications in home security and network equipment, etc.
What is Nano Cap™ Technology?
Nano Cap™ refers to ultra-stable control technology achieved by combining advanced analog expertise covering circuit design, processes, and layout utilizing ROHM’s vertically integrated production system. Stable control eliminates the problem of unstable operation related to capacitors in analog circuits, contributing to a reduction in design resources for a wide range of applications in automotive, industrial equipment, consumer, and other fields.
- Special website: What is ‘Nano’ Power Supply Technology?
- Stories of Manufacturing: Nano Power Supply Technology
- Video: Nano Cap™
Nano Cap™ is a trademark or registered trademark of ROHM Co., Ltd.
Attachments
Heike MuellerROHM [email protected]
FAQ**
How is ROHM Company Limited ROHCF's new BD9xxN5 Series of LDO regulators expected to impact the electronics market in Santa Clara, CA, especially in automotive and industrial sectors?
In what ways can the advancements in Nano Cap™ technology by ROHM Company Limited ROHCF enhance the design flexibility of consumer electronics in Kyoto, Japan?
Considering the mass production capacity of 300K units per month for the BD9xxN5 Series, how might this scale of production affect the supply chain dynamics between Santa Clara, CA, and Kyoto, Japan?
What potential applications for the BD9xxN5 Series can be identified in both Santa Clara, CA, and Kyoto, Japan, given the increasing demand for miniaturization in electronic devices as highlighted by ROHM Company Limited ROHCF?
**MWN-AI FAQ is based on asking OpenAI questions about Rohm Company Limited (OTC: ROHCF).
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