Skip to main content

ROHM’s New Energy-Saving DC-DC Converter ICs Offered in the TSOT23 Package

Written by Customer Service on . Posted in Public Companies.

Compact size reduces component area by 72%, contributing to smaller power supplies in consumer and industrial equipment

ROHM’s new compact, energy-saving DC-DC step-down converter ICs

Suitable for consumer and industrial applications, including refrigerators, washing machines, PLCs, and inverters
Suitable for consumer and industrial applications, including refrigerators, washing machines, PLCs, and inverters

ROHM Products vs. Conventional Products: Package Area and Power Conversion Efficiency Comparisons

Smaller mounting area means greater miniaturization; high conversion efficiency means lower application power consumption
Smaller mounting area means greater miniaturization; high conversion efficiency means lower application power consumption

Santa Clara, CA and Kyoto, Japan, April 23, 2024 (GLOBE NEWSWIRE) — ROHM Semiconductor today announced four new compact DC-DC step-down converter ICs suitable for consumer and industrial applications, including refrigerators, washing machines, Programmable Logic Controllers (PLCs), and inverters. ROHM is expanding the lineup which includes the BD9E203FP4-Z, a 2A buck converter with switching frequency of 350kHz.

In recent years, increasing application functionality in consumer devices and industrial equipment has driven the demand to minimize board space, resulting in a rise in the adoption rate of compact DC-DC converter ICs. Furthermore, as reducing standby power consumption is becoming a significant challenge, there is a growing need for DC-DC converter ICs to deliver higher efficiency during light load (low power) conditions.

To meet these demands, ROHM developed products that achieve higher efficiency in an even smaller package than existing SOP-J8 (JEDEC standard: SOIC8 equivalent) products. The new converter ICs deliver an output current of 1A to 3A in the compact TSOT23 package (2.8mm × 2.9mm). This reduces component area by up to 72% compared to the general SOP-J8 package (4.9mm × 6.0mm), contributing to the miniaturization of power supply blocks. In addition, adopting a flip chip on lead frame TSOT23 package design enables high-efficiency operation by eliminating bond wire resistance.

The BD9E105FP4-Z, BD9E202FP4-Z, and BD9E304FP4-LBZ also utilize a COT control mode during light load operation. As a result, efficiency during light load operation is improved over standard products, making them ideal for applications requiring low standby power consumption.

Going forward, ROHM will continue to focus on developing products that leverage analog design technologies, contributing to greater miniaturization and energy efficiency in consumer and industrial equipment applications.

TSOT23 Package Product Lineup
View the product lineup here: BD9E105FP4-Z, BD9E202FP4-Z, BD9E304FP4-LBZ, BD9A201FP4-LBZ

Application Examples

  • 3.3V/5V/12V/24V power supply applications
  • Consumer appliances: Refrigerators, washing machines, air conditioners, etc.
  • Industrial equipment: PLCs, inverters, AC servos, etc.

Online Sales Information

  • Sales start date: March 2024 (in succession)
  • Online distributors: DigiKey, Mouser and Farnell
  • The products will be offered at other online distributors as they become available.

Additional Product Information

In addition to the ICs, evaluation boards and support tools are available that enable immediate evaluation during application design.

Support Tools

  • Calculation Sheet: A calculation tool for application circuits that facilitates external constant design. By setting values as described, users will be able to determine the circuit parameters that satisfy the desired characteristics. The Calculation Sheet is available for download from the ‘Tools’ section on each product page on ROHM’s website.
    [BD9E105FP4-Z / BD9E304FP4-LBZ / BD9A201FP4-LBZ]
  • ROHM Solution Simulator: A free simulation tool that runs on ROHM’s website* (https://www.rohm.com/solution-simulator). Changing the external constants in the topology described in the datasheet allows the optimal solution for frequency response (for a power supply) to be considered.
    [BD9E105FP4-Z / BD9E202FP4-Z / BD9E304FP4-LBZ / BD9A201FP4-LBZ]
    *Logging in to MyROHM is required to use the tool
  • Other Content: SPICE models for circuit simulation along with application notes that contain useful information on thermal design, circuit design, and verification can also be downloaded from each product page.

Attachments

CONTACT: Keng Ly
ROHM Semiconductor
(248) 348-9920
kly@rohmsemiconductor.com

Heather Savage
BWW Communications
(408) 507-4398
heather.savage@bwwcomms.com

Disclaimer & Cookie Notice

Welcome to GOLDEA services for Professionals

Before you continue, please confirm the following:

Professional advisers only

I am a professional adviser and would like to visit the GOLDEA CAPITAL for Professionals website.

Important Notice for Investors:

The services and products offered by Goldalea Capital Ltd. are intended exclusively for professional market participants as defined by applicable laws and regulations. This typically includes institutional investors, qualified investors, and high-net-worth individuals who have sufficient knowledge, experience, resources, and independence to assess the risks of trading on their own.

No Investment Advice:

The information, analyses, and market data provided are for general information purposes only and do not constitute individual investment advice. They should not be construed as a basis for investment decisions and do not take into account the specific investment objectives, financial situation, or individual needs of any recipient.

High Risks:

Trading in financial instruments is associated with significant risks and may result in the complete loss of the invested capital. Goldalea Capital Ltd. accepts no liability for losses incurred as a result of the use of the information provided or the execution of transactions.

Sole Responsibility:

The decision to invest or not to invest is solely the responsibility of the investor. Investors should obtain comprehensive information about the risks involved before making any investment decision and, if necessary, seek independent advice.

No Guarantees:

Goldalea Capital Ltd. makes no warranties or representations as to the accuracy, completeness, or timeliness of the information provided. Markets are subject to constant change, and past performance is not a reliable indicator of future results.

Regional Restrictions:

The services offered by Goldalea Capital Ltd. may not be available to all persons or in all countries. It is the responsibility of the investor to ensure that they are authorized to use the services offered.

Please note: This disclaimer is for general information purposes only and does not replace individual legal or tax advice.