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|Summit Releases World's First Multi-Output Power IC with Fully
Programmable Battery Charging|
San Jose, Calif. - Summit Microelectronics has announced
the next generation of Programmable Power Manager multi-output power supply ICs. Following the widely acclaimed
first generation products, the new SMB122 focuses on portable power applications, adding key features such as
programmable battery management and integrated FET's. he SMB122 also provides enhanced flexibility and
programmability compared to the first generation as users can now change functionality of several outputs in
addition to parametric adjustment. With Summit's easy to use development environment users digitally program the
entire multiple output power supply and associated power management functions with a few clicks of a mouse. Compared
to the tedious iterative hardware design of conventional analog power IC's the Summit solution can significantly
improve development cycle time.
Incorporating a level of integration not available in conventional power IC's
the SMB122 effectively combines power regulation and advanced power control into one integrated solution. In
addition to the step-down, step-up, inverting, LDO outputs and the Li-Ion charger the SMB122's power control
functions include: individual channel enable/shutdown, power up/down sequencing, power up slew rate control, static
and dynamic output voltage control (Dynamic Voltage Management). The battery charger is likewise fully programmable
for all the LiIon CC/CV parameters with 0.5% float voltage accuracy. Additionally, complete power system diagnostics
and monitoring is provided via the I2C serial interface and digital status outputs. These include input and output
monitoring for under/over-voltage/over-current (UV/OV/OC) with integrated system RESET control, low/missing battery
detection and AC/DC adapter detection. All configuration data for the SMB122 is programmed via the easy to use
PC-based graphical user interface (GUI) and is stored in on-chip EEPROM memory, of which 96 bytes are available for
user data storage. Enhancing flexibility ever further, the device can be programmed during development and then used
in a "fixed" configuration or it may be re-programmed in-system via the I2C interface.
SMB122 Programmable Power Manager extends Summit's leadership in consumer applications where power subsystem
complexity has created a design bottleneck", stated Abid Hussain, Summit's Director of Marketing. "OEMs are under
intense pressure to develop high performance, feature-packed products with shorter development cycles than ever
before. The SMB122 offers unequaled flexibility needed to speed development while providing the highest integration
to meet the cost metrics of high volume production."
Of the eight programmable regulators four
are also functionally configurable: Three PWM/PFM step-down (buck) converters, one configurable PWM/PFM step-up
(boost) OR step-down (buck) converter, three configurable PWM/PFM step-up (boost) OR inverting (buck-boost)
converters, and one low-dropout linear LDO regulator. All outputs are programmable for sequencing/enable, output
voltage (static and dynamic to 1.5% accuracy) and UV/OV/OC monitoring. Automatic PWM/PFM operation is provided to
enhance light load efficiency with PWM override for noise sensitive RF or audio application. Programmable phase
interleaving for the switching regulators also reduces noise and peak battery loading. Short circuit current
limiting and thermal protection safety circuits are also built-in to enhance reliability.
SMB122's is well suited for powering components commonly found in digital consumer electronics such as digital
still cameras/camcorders (DSC/DCC), portable MP3/MEPG4 players, GPS terminals, personal digital assistants (PDAs),
portable LCD TV's, as well as the next generation of "smart" mobile phones. The Dynamic Voltage Management feature
is particularly useful in XscaleTM and ARMTM CPU applications and where LED backlight brightness control is
The SMB122 operates directly from +2.7V to +6.0V input making it ideally suited for
1-cell Li-Ion (+3.0V to +4.2V) battery applications though line-powered applications are easily supported as well.
Higher input voltages (2-cell Li-Ion, +12V) can be accommodated in many cases with simple applications
configuration. The operating temperature range is +0°C to +70°C or -40°C to +85°C and is available in the 64-pad QFN
package that is lead-free and RoHS-standard compliant. Available now in production quantities, the device is priced
at $6.12 each in quantities of 10,000 units.
Design Software and Programmer for Prototype
To speed user product development, Summit offers customers the SMB122EV companion
evaluation board and a graphic user interface (GUI) software so designers can quickly see the features and benefits
and design a prototype power supply with the SMB122. This is a complete development tool that lets designers easily
manipulate the characteristics of their systems. The SMB122EV design kit includes menu-driven Microsoft Windows®
graphic user interface (GUI) software to automate programming tasks and also includes all necessary hardware to
interface to the parallel or USB port of a laptop or PC.
Once a user completes design and
prototyping, the SMB122EV automaticallygenerates a HEX data file that can be transmitted to Summit for review and
approval. Summit then assigns a unique customer identification code to the HEX file and programs the customer's
production devices prior to final electrical test operations. This ensures that the device will operate properly in
the end application.
Jueves, 01 Septiembre, 2005 - 08:31