Renesas Electronics Releases New Power Supply ICs that Cut Microcontroller Power Supply System Component Counts by 50 Percent

  Renesas Electronics Releases New Power Supply ICs that Cut Microcontroller
  Power Supply System Component Counts by 50 Percent and Significantly Reduce
  Standby Mode Power

 New Devices Contribute to Cost Reduction, Miniaturization, and Power Savings
   by Integrating a Switching Regulator and an LDO in a Single Package and
                    Providing On-Chip Ultralow Power Modes

Business Wire

TOKYO -- October 18, 2012

Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced
semiconductor solutions, today announced the release of the RAA23021X Series
of two output channel power supply ICs that provide functions such as stepping
down the voltage supplied to a microcontroller (MCU) and its peripheral
devices (e.g. from 5.0 V to 3.3 V) and controlling the power supply in standby
mode. These products are optimal for use in industrial, office automation,
consumer, and network equipment.

RAA23021X (Photo: Business Wire)

RAA23021X (Photo: Business Wire)

Recently, the demands for miniaturization and lower power consumption in
electronic equipment have been increasing. However, often, system
manufacturers construct the necessary power rails from single-output voltage
regulator ICs and electronic components and thus find it difficult to achieve
the required miniaturization. Furthermore, even though MCU standby mode and
low power modes are an effective method to reduce and align power requirements
to frequently changing system requirements, generally the power supply system
hasn’t been designed to also provide this support.

Therefore Renesas is now releasing the RAA23021X Series of power supply ICs
that both reduce MCU power supply system parts counts and also significantly
reduce standby mode power consumption.

Key Features of the RAA23021X Series of Power Supply ICs:

(1) Power supply system miniaturization and lower costs achieved by
integration of a switching regulator and a Low-Drop-Out regulator (LDO) in the
same package

These new products integrate, in a single package, the step-down switching
regulator and LDO required in a step-down circuit as well as phase
compensation components, and discharge circuits. As a result, compared to
earlier Renesas products, the number of components in a MCU power supply
system can be reduced by 50 percent, thus allowing significant cost reductions
and miniaturization in application systems.

(2) Substantial power reductions in standby mode

These new products provide an ultralow power consumption mode that reduces
their own power consumption to 25 µA during standby power saving states such
as the deep software standby mode provided by Renesas MCUs. This allows total
power consumption during standby mode for the MCU and power supply IC system
to be reduced by over 90% compared to similar systems using earlier Renesas

(3) Improved usability with on-chip sequencing function and protection

These new products allow one of three pattern sequences to be selected easily
with pin settings to support configurations of power-on sequence of the
devices used in the application system. In addition, these products provide
various protection circuits, including overcurrent protection, thermal
protection, and low-voltage malfunction protection functions. Thus
high-reliability power supply systems can be constructed easily with a minimum
number of external components.

(4) Extensive set of development tools available

To support the development of system power supply designs, Renesas provides
not only evaluation boards for these new products independently, but also
evaluation boards that include both these new products and Renesas MCUs.
Renesas also provides a variety of information on the Renesas web site,
including circuit diagrams, product recommendations, and board patterns. Users
can easily acquire information such as previous evaluations that combine an
MCU with these products and board patterns, which can result in significantly
shorter evaluation and development periods.

RAA23021X Series consists of four products with fixed output voltages (1.8,
2.7, 3.0, and 3.3 V) and one with a variable output voltage for a total of
five products. The maximum output current for the switching regulator is 3 A
and that for the LDO is 0.5 A so that these products can provide power supply
to an MCU as well as its peripheral devices. These products are provided in a
high thermal dissipation 20-pin HTSSOP package. The die pad, which takes up
most of the rear surface of the package, allows high thermal dissipation

In addition to this series, Renesas is currently developing the RAA23022X
Series, which integrates functions for switching over to battery backup if
power fails. Renesas is committed to expanding this product line, including
products with 4 output channels.

Pricing and Availability

Samples of the RAA23021X Series of power supply ICs are scheduled to be
available now, priced at US$0.95 per unit. Mass production of the RAA23021X
Series is scheduled to begin in February 2013 and is expected to reach a scale
of 1,000,000 units per month in October 2013.

Samples of the RAA23022X Series of power supply ICs are scheduled to be
available on December 2012. (Pricing and availability are subject to change
without notice.)


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respective owners.

About Renesas Electronics Corporation

Renesas Electronics Corporation (TSE: 6723), the world’s number one supplier
of microcontrollers, is a premier supplier of advanced semiconductor solutions
including microcontrollers, SoC solutions and a broad-range of analog and
power devices. Business operations began as Renesas Electronics in April 2010
through the integration of NEC Electronics Corporation (TSE:6723) and Renesas
Technology Corp., with operations spanning research, development, design and
manufacturing for a wide range of applications. Headquartered in Japan,
Renesas Electronics has subsidiaries in 20 countries worldwide. More
information can be found at

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Jessica Kerr, 415-975-2213
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