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PR 128-2014/ROHM
New ROHM Semiconductor Switching Regulators Meet
High Operating Voltage, Extended Temperature, and
Small Layout Requirements
Enabling ultra-high power efficiency at a competitive price point,
ROHM's new DC/DC regulators are optimized for a broad range of
industrial and consumer high performance power supplies
Willich-Münchheide, August 20th, 2014 – ROHM Semiconductor recently
introduced two new switching regulator series designed to archive high operating
voltage, extended temperature, and small layout requirements demanded of
today's high performance, space-constrained power supply applications.
Delivering extremely high power efficiency over a wide current load, ROHM's
new switching regulators are optimized to support a comprehensive range of
industrial, consumer and battery-powered equipment power supplies. As users
demand increased performance from smaller and smaller power supply
applications, ROHM's expanded DC/DC switching regulator line offers significant
efficiency advantages over other voltage regulators and permits designers to
further shrink board sizes.
ROHM's BD9G101G DC/DC converter features a high and wide input voltage
range (VCC=6V~42V), an integrated internal high-side 42V power MOSFET, and
provides 0.5A of DC output. ROHM's high-efficiency 6MHz synchronous stepdown switching regulator BU9000xGWZ utilizes an ultra-low current pulsefrequency modulation (PFM) mode and provides up to 1.0A of load current with
an input voltage range from 4.0V to 5.5V.
ROHM's new switching regulators provide high integration at smaller sizes,
allowing designers to reduce space by more than 20%. With increased power
efficiency and wide voltage input capabilities, designers can implement reduced
power and energy saving features that improve system reliability for a broad
range of applications.
Feature Sets in Detail:
The BD9G101G gives power supply designers a wide operating voltage range
from 6 to 42V with extended operating temperature (-40 to 105oC) in a very
small SOT23 (SSOP6) package that measures only 2.9x2.8x1.25mm. Its fixed
1.5MHz operating frequency allows the use of small inductors and ceramic
capacitors. With a 45V/800mΩ internal power MOSFET that delivers greater
efficiency, the BD9G101G delivers 0.75V±1.5% feedback pin voltage and
integrates overcurrent protection, under voltage lock out and thermal shutdown
functions.
With built-in FETs that allow designers to accommodate space-constrained board
layouts, ROHM's BU9000xGWZ is offered in an ultra-compact UCSP35L1
(1.3x0.9x0.4mm) package. This new switching regulator features 6 MHz high
switching frequency for fast transient response and automatic Pulse Frequency
Modulation (PFM)/Pulse Width Modulation (PWM) mode switching operation to
enable high power efficiency over both light (PFM mode) and heavy (PWM mode)
loads. Designers with widely varying loads can use PFM to achieve increased
efficiency at lighter load currents. It also features internal overcurrent protection,
under voltage lock out and thermal shutdown circuits.
Availability: Mass Production now.
Applications

Battery-Powered, Secondary POL, Distributed Power Supplies

Power supplies in:
o
LCD TVs
o
Broadband/Communications Equipment
o
Printers
o
Notebook/Tablet PCs, Servers
o
Gaming Equipment
o
Storage Devices (HDDs/SSDs)
Evaluation boards supporting the two products are available through distribution.
For more information on ROHM's expanded line of switching regulators, please
click here.
About ROHM Semiconductor
ROHM Semiconductor is a global company of 331,087 million yen (3,24 billion $)
revenue with 19.985 employees in the last fiscal year ending March 2014. ROHM
Semiconductor develops and manufactures a very large product range from the Ultra
Low Power Microcontroller, Power Management, Standard ICs , SiC Diodes, Mosfets and
Modules , Power Transistors and Diodes, LEDs to passives components such as Resistors,
Tantalum Capacitors and LED display units, thermal Printheads in state-of-the-art
manufacturing plants in Japan, Korea, Malaysia, Thailand, the Philippines, China and
Europe.
Lapis Semiconductor (former OKI Semiconductor), SiCrystal AG and Kionix are
companies of ROHM Group.
ROHM Semiconductor Europe has its head office near Dusseldorf serving the EMEA
region (Europe, Middle East and Africa). For further information please contact
www.rohm.com/eu
Contact Information:
ROHM Semiconductor GmbH
Media Department
Karl-Arnold-Str. 15
D-47877 Willich-Münchheide
Germany
Phone: +49 2154 921 0
Fax: +49 2154 921450
E-mail: [email protected]
KEK Concept GmbH
Evelyn Stepken
Hofer Str. 1
D-81737 Munich
Germany
Phone: +49 89 673 461-30
Fax: +49 89 673 461-55
E-mail: [email protected]
Caption
ROHM’s new switching regulators meet high operating voltage, extended
temperature, and small layout requirements