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ROHM Semiconductor's New LDO Lineup Designed for Automotive Applications: 16 AEC-Q100-compliant models ideal for MCU power supplies in body and powertrain systems

Press Release   •   May 16, 2014 07:26 GMT

KYOTO, Japan and SANTA CLARA, Calif., May 16 , 2014 /PRNewswire/ -- ROHM Semiconductor has recently announced the development of a new 16-model lineup of LDOs optimized for MCU power supplies in automotive body and powertrain systems. The new BD4xxMx series, together with the BDxxC0A series designed for power supplies in information systems such as car infotainment, bring the total number of automotive-grade LDOs to 43.

The BD4xxMx series utilizes state-of-the-art power system 0.35um BiC-DMOS processes and takes advantage of ROHM's renowned analog design technology to achieve less than half the no-load current consumption of standard products, contributing to significant energy savings. In addition, novel circuit design enables support for ceramic capacitors, eliminating the need for electrolytic capacitors for oscillation prevention, reducing both mounting area and costs.

In recent years as power supply ICs for automotive applications continue to increase in sophistication and functionality, there comes a greater need for an expanded lineup to cover a wide range of characteristics and application requirements – such as package type and output current – instead of simply focusing on developing an all-in-one solution.

In order to quickly respond to these demands, ROHM offers a broad LDO lineup in various package types, output voltages, and currents to suit a range of automotive applications. The BD4xxMx series is available in a range of form factors, from power packages that support harsh environments to ultra-compact, space-saving types. Additionally, 0.35um BiC-DMOS processes and proprietary analog design technology cultivated over many years are utilized to achieve an input tolerance of 45V along with automotive-grade reliability. And stable low current operation with load is provided, contributing to improved performance and efficiency.

Also, unlike conventional products, stable voltage output with no output fluctuations or oscillation is possible using just a small (1-10uF) external capacitance. This allows support for compact ceramic capacitors, contributing to increase space savings.

Pricing: $1.05 (per sample)
Availability: Now
Delivery: 14 weeks ARO

Key Features

1.Optimized design results in less than half the current consumption of conventional products

To meet the increasingly restrictive energy requirements of today's automotive systems, the BD4xxMx series leverages ROHM's market-tested analog design technology to reduce no-load current consumption by more than half while providing stable low-current operation during loads (along with the BDxxC0A series).

2Ceramic capacitor compatibility reduces mounting area and costs

Optimized design ensures stablevoltage output with no output voltage fluctuations or oscillations with an external capacitance of only 1-10uF. This eliminates the need for larger external electrolytic capacitors and allows smaller ceramic capacitors to be used, minimizing both mounting area and costs.

3Multiple package types offered for broad compatibility

Redesigned circuitry that reduces the number of blocks, along with a reconfigured chip layout, make it possible to offer 6 different package types, from robust power packages that can withstand harsh environments to compact models suitable for high-density applications.


◇ Fuel Injection (FI)

◇ Tire Pressure Monitoring Systems (TPMS)

◇ Smart key

◇ LCD monitors

◇ HEV / EV inverters

◇ Body Control Modules (BCM)

◇ Heads Up Displays (HUD)

About ROHM Semiconductor:

ROHM Semiconductor is an industry leader in system LSI, discrete components and module products, utilizing the latest in semiconductor technology. ROHM's proprietary production system, which includes some of the most advanced automation technology, is a major factor in keeping it at the forefront of the electronic component manufacturing industry. In addition to its development of electronic components, ROHM has also developed its own production system so that it can focus on specific aspects of customized product development. ROHM employs highly skilled engineers with expertise in all aspects of design, development and production. This allows ROHM the flexibility to take on a wide range of applications and projects and the capability to serve valuable clients in the automotive, telecommunication and computer sectors, as well as consumer OEMs.

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